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| users manual IE-784928-NS-EM1 ep-784928gf-ns target device m m m m pd784915 subseries m m m m pd784928 subseries m m m m pd784928y subseries IE-784928-NS-EM1 emulation board document no. u13819ej1v0um00 (1st edition) date published april 1999 n cp(k) printed in japan 1999 ?
users manual u13819ej1v0um00 2 [memo] users manual u13819ej1v0um00 3 windows is either a registered trademark or a trademark of microsoft corporation in the united states and/or other countries. pc/at is a trademark of international business machines corporation. the information in this document is subject to change without notice. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of nec corporation. nec corporation assumes no responsibility for any errors which may appear in this document. nec corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. no license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of nec corporation or of others. m7a 96. 10 users manual u13819ej1v0um00 4 regional information some information contained in this document may vary from country to country. before using any nec product in your application, piease contact the nec office in your country to obtain a list of authorized representatives and distributors. they will verify: ? device availability ? ordering information ? product release schedule ? availability of related technical literature ? development environment specifications (for example, specifications for third-party tools and components, host computers, power plugs, ac supply voltages, and so forth) ? network requirements in addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary from country to country. nec electronics inc. (u.s.) santa clara, california tel: 408-588-6000 800-366-9782 fax: 408-588-6130 800-729-9288 nec electronics (germany) gmbh duesseldorf, germany tel: 0211-65 03 02 fax: 0211-65 03 490 nec electronics (uk) ltd. milton keynes, uk tel: 01908-691-133 fax: 01908-670-290 nec electronics italiana s.r.l. milano, italy tel: 02-66 75 41 fax: 02-66 75 42 99 nec electronics (germany) gmbh benelux office eindhoven, the netherlands tel: 040-2445845 fax: 040-2444580 nec electronics (france) s.a. velizy-villacoublay, france tel: 01-30-67 58 00 fax: 01-30-67 58 99 nec electronics (france) s.a. spain office madrid, spain tel: 91-504-2787 fax: 91-504-2860 nec electronics (germany) gmbh scandinavia office taeby, sweden tel: 08-63 80 820 fax: 08-63 80 388 nec electronics hong kong ltd. hong kong tel: 2886-9318 fax: 2886-9022/9044 nec electronics hong kong ltd. seoul branch seoul, korea tel: 02-528-0303 fax: 02-528-4411 nec electronics singapore pte. ltd. united square, singapore 1130 tel: 65-253-8311 fax: 65-250-3583 nec electronics taiwan ltd. taipei, taiwan tel: 02-2719-2377 fax: 02-2719-5951 nec do brasil s.a. electron devices division rodovia presidente dutra, km 214 07210-902-guarulhos-sp brasil tel: 55-11-6465-6810 fax: 55-11-6465-6829 j99.1 users manual u13819ej1v0um00 5 introduction product overview the IE-784928-NS-EM1 is designed to be used with the ie-78k4-ns and dedicated emulation probe to debug the following target devices that belong to the 78k/iv series of 16-bit single-chip microcontrollers. m pd784915 subseries: m pd784915, 784915a, 784915b, 784916a, 784916b, 78p4916 m pd784928 subseries: m pd784927, 78f4928 m pd784928y subseries: m pd784927y, 78f4928y target readers this manual is intended for engineers who will use the IE-784928-NS-EM1 with the ie- 78k4-ns to perform system debugging. engineers who use this manual are expected to be thoroughly familiar with the target devices functions and use methods and to be knowledgeable about debugging. organization when using the IE-784928-NS-EM1, refer to not only this manual (supplied with the ie- 784928-ns-em1) but also the manual that is supplied with the ie-78k4-ns. ie-78k4-ns IE-784928-NS-EM1 users manual users manual basic specifications general system configuration part names external interface functions installation differences between target devices and target interface circuits purpose this manuals purpose is to explain various debugging functions that can be performed when using the IE-784928-NS-EM1. users manual u13819ej1v0um00 6 terminology the meanings of certain terms used in this manual are listed below. term meaning emulation device this is a general term that refers to the device in the emulator that is used to emulate the target device. it includes the emulation cpu. emulation cpu this is the cpu block in the emulator that is used to execute user-generated programs. target device this is the device (a real chip) that is the target for emulation. target system the device that is targeted for debugging. this includes the target program and the hardware provided by the user. when defined narrowly, it includes only the hardware. ie system this refers to the combination of the ie-78k4-ns and the IE-784928-NS-EM1. conventions data significance: higher digits on the left and lower digits on the right note : footnote for item marked with note in the text caution : information requiring particular attention remark : supplementary information related documents the related documents (users manuals) indicated in this publication may include preliminary versions. however, preliminary versions are not marked as such. document number document name english japanese ie-78k4-ns u13356e u13356j IE-784928-NS-EM1 this manual u13819j id78k4-ns integrated debugger reference windows? based u12796e u12796j m pd784915 subseries hardware u10444e u10444j m pd784928 subseries hardware u12648e u12648j caution the documents listed above are subject to change without notice. be sure to use the latest documents when designing. users manual u13819ej1v0um00 7 contents chapter 1 general ............................................................................................................. .................11 1.1 system configuration ........................................................................................................ ....................... 12 1.2 hardware configuration...................................................................................................... ...................... 14 1.3 basic specifications........................................................................................................ .......................... 15 chapter 2 part names.......................................................................................................... ..............17 2.1 parts of emulation board.................................................................................................... ...................... 18 2.2 chipset board part names .................................................................................................... ................... 19 chapter 3 installation ........................................................................................................ .............21 3.1 connection .................................................................................................................. ............................... 22 3.2 target device setting ....................................................................................................... ......................... 22 3.3 clock settings.............................................................................................................. .............................. 23 3.3.1 overview of clock settings ................................................................................................ ............. 23 3.3.2 main system clock settings................................................................................................ ............ 25 3.3.3 subsystem clock settings .................................................................................................. ............ 29 3.4 pin mask function settings.................................................................................................. .................... 30 3.5 low-voltage emulation setting............................................................................................... ................. 30 3.6 external trigger ............................................................................................................ ............................. 31 chapter 4 emulation probe (ep-784928gf-ns)............................................................................33 4.1 configuration of ep-784928gf-ns............................................................................................. .............. 33 4.2 connection procedure ........................................................................................................ ...................... 34 4.2.1 emulation probe and target system connection (when using the 100-pin gf package) ............... 34 4.2.2 emulation probe and target system connection (when using the 100-pin gc package) ............... 35 chapter 5 differences between target devices and target interface circuits ............37 users manual u13819ej1v0um00 8 list of figures figure no. title page figure 1-1. system configuration .................................................................................................................... 12 figure 1-2. basic hardware configuration ........................................................................................................ 14 figure 2-1. IE-784928-NS-EM1 part names ..................................................................................................... 18 figure 2-2. chipset board part names .............................................................................................................. 19 figure 3-1. mounting of chipset board .............................................................................................................. 22 figure 3-2. external circuits used as system clock oscillator ........................................................................... 23 figure 3-3. when using clock that is already mounted on emulation board ...................................................... 24 figure 3-4. when using user-mounted clock ................................................................................................... 24 figure 3-5. when using an external clock ....................................................................................................... 25 figure 3-6. connections on parts board (when using main system clock or user-mounted clock) ...................... 26 figure 3-7. crystal oscillator (when using main system clock or user-mounted clock) ...................................... 28 figure 3-8. pin alignment of crystal oscillator and socket ................................................................................. 28 figure 3-9. external trigger input position ....................................................................................................... 31 figure 4-1. ep-784928gf-ns configuration diagram ........................................................................................ 33 figure 4-2. emulation probe and target system connection (when using the 100-pin gf package) .................... 34 figure 4-3. ep-784928gf-ns and target system connection (when using the 100-pin gc package) .................. 35 figure 5-1. equivalent circuit 1 of emulation circuit ........................................................................................... 38 figure 5-2. equivalent circuit 2 of emulation circuit .......................................................................................... 39 figure 5-3. equivalent circuit 3 of emulation circuit .......................................................................................... 40 users manual u13819ej1v0um00 9 list of tables table no. title page table 1-1. basic specifications ........................................................................................................................ 15 table 3-1. main system clock settings ............................................................................................................. 25 table 3-2. slide switch setting for nmi interrupt mask function .......................................................................... 30 users manual u13819ej1v0um00 10 [memo] users manual u13819ej1v0um00 11 chapter 1 general the IE-784928-NS-EM1 is a development tool for efficient debugging of hardware or software when using one of the following target devices that belong to the 78k/iv series of 16-bit single-chip microcontrollers. this chapter describes the IE-784928-NS-EM1s system configuration and basic specifications. target device m pd784915 subseries m pd784928 subseries m pd784928y subseries chapter 1 general users manual u13819ej1v0um00 12 1.1 system configuration figure 1-1 illustrates the IE-784928-NS-EM1s system configuration. figure 1-1. system configuration host machine pc-9800 series or ibm pc/at tm or compatibles debugger id78k4-ns (sold separately) device file note (sold separately) control software fg cable g-784928 io board conversion socket IE-784928-NS-EM1 (this product) dedicated emulation probe ep-784928gf-ns (sold separately) 4915ns chipset ac adapter ie-70000-mc-ps-b (sold separately) 4928 chipset 4915 yq pack pkg tgc-100sdw nev-921gf-100 4928 gc dummy ie-78k4-ns (sold separately) interface cable (ns if cable) in-circuit emulator interface card ns card cable mc card cable ie-70000-cd-if-a (sold separately) interface board ie-70000-98-if-c (sold separately) interface board ie-70000-pc-if-c (sold separately) interface board ie-70000-pci-if (sold separately) or interface cable chapter 1 general users manual u13819ej1v0um00 13 note the device file is as follows, in accordance with the subseries. m s df784915: m pd784915 subseries m s df784928: m pd784928, 784928y subseries chapter 1 general users manual u13819ej1v0um00 14 1.2 hardware configuration figure 1-2 shows the IE-784928-NS-EM1s position in the basic hardware configuration. figure 1-2. basic hardware configuration host machine interface board (sold separately) 78k4 main board ie system 78k4 emulation board dedicated emulation probe ep-784928gf-ns (sold separately) interface card (sold separately) dedicated bus interface i/o emulation board 4928 chipset board 4915ns chipset board ie-78k4-ns IE-784928-NS-EM1 chapter 1 general users manual u13819ej1v0um00 15 1.3 basic specifications the IE-784928-NS-EM1s basic specifications are listed in table 1-1. table 1-1. basic specifications parameter description target device m pd784915, 784928, 784928y subseries system clock main system clock: 8 mhz subsystem clock: 32. 768 khz main clock supply external: input via an emulation probe from the target system internal: mounted on emulation board (16 mhz), or mounted on the board by the user subsystem clock s upply internal: mounted on emulation board (32.768 khz) low-voltage support 2.7 v or higher (same as target device) users manual u13819ej1v0um00 16 [memo] users manual u13819ej1v0um00 17 chapter 2 part names this chapter introduces the parts of the IE-784928-NS-EM1 main unit and the chipset boards. the packing box contains the emulation board (IE-784928-NS-EM1), and two chipset boards (4915ns chipset, 4928 chipset). if there are any missing or damaged items, please contact an nec sales representative. fill out and return the guarantee document that comes with the main unit. chapter 2 part names users manual u13819ej1v0um00 18 2.1 parts of emulation board figure 2-1. IE-784928-NS-EM1 part names x1 socket crystal resonator for subsystem clock connector for probe tip board connection (l1, l2) gnd tp1 tp1 cn1 l1 l2 low volt extout (tp3) extin (tp4) probe connector cn1 ep-784928gf-ns tvcc led1 IE-784928-NS-EM1 chapter 2 part names users manual u13819ej1v0um00 19 2.2 chipset board part names figure 2-2. chipset board part names on l1 l2 4915ns chipset off sw1 on l1 l2 4928 chipset off sw1 the IE-784928-NS-EM1 includes the 4915ns chipset and the 4928 chipset. (1) when the 4915ns chipset is used to emulate the m pd784915 subseries, use the 4928 chipset to emulate the m pd784928 and 784928y subseries. (2) when using an emulation probe, connect the 4915ns chipset or the 4928 chipset to the probe tip. (3) when not using an emulation probe, connect the 4915ns chipset or the 4928 chipset to the l1 and l2 connectors on the IE-784928-NS-EM1. caution do not connect the chipset boards to both the emulation probe tip and the l1 and l2 connectors on the IE-784928-NS-EM1 at the same time. users manual u13819ej1v0um00 20 [memo] users manual u13819ej1v0um00 21 chapter 3 installation this chapter describes methods for connecting the IE-784928-NS-EM1 to the ie-78k4-ns, emulation probe, or chipset boards. mode setting methods are also described. caution connecting or removing components to or from the target system, or making switch or other setting changes must be carried out after the power supply to both the ie system and the target system has been switched off. chapter 3 installation users manual u13819ej1v0um00 22 3.1 connection (1) connection to chipset board connect the 4915ns chipset or the 4928 chipset to the l1 and l2 connectors on the IE-784928-NS-EM1. figure 3-1. mounting of chipset board chipset board l1 l2 caution do not connect the chipset board while the emulation probe is in use. (2) connection with ie-78k4-ns main unit see the ie-78k4-ns users manual (u13356e) for a description of how to connect the IE-784928-NS-EM1 to the ie-78k4-ns. (3) connection with emulation probe see chapter 4 emulation probe (ep-784928gf-ns) for a description of how to connect an emulation probe to the IE-784928-NS-EM1. on this board, connect the emulation probe to cn1. caution a clock cannot be supplied to the emulation device from the oscillation clock in the target system. when operating at a frequency other than 16 mhz, attach a clock device of the same oscillation frequency as that supplied to the target device to x1. 3.2 target device setting when emulating the m pd784915 subseries, connect the 4915ns chipset to l1 and l2. when emulating the m pd784928 and m pd784928y subseries, connect the 4928 chipset to l1 and l2. chapter 3 installation users manual u13819ej1v0um00 23 3.3 clock settings 3.3.1 overview of clock settings the main system clock to be used during debugging can be selected from (1) to (3) below. (1) clock that is already mounted on emulation board (2) clock that is mounted by user (3) external clock caution use clock that is already mounted on emulation board for the subsystem clock. if the target system includes an internal clock, select either (1) clock that is already mounted on emulation board or (2) clock that is mounted by user. for an internal clock, the target device is connected to a resonator and the target devices internal oscillator is used. an example of the external circuit is shown in part (a) of figure 3-2. during emulation, the resonator that is mounted on the target system is not used. instead, the clock that is mounted on the emulation board, which is installed for the ie-78k4-ns is used. if the target system includes an external clock, select (3) external clock. for an external clock, a clock signal is supplied from outside of the target device and the target devices internal oscillator is not used. an example of the external circuit is shown in part (b) of figure 3-2. figure 3-2. external circuits used as system clock oscillator (a) internal clock (b) external clock x2 x2 target device target device external clock x1 x1 chapter 3 installation users manual u13819ej1v0um00 24 (1) clock that is already mounted on emulation board a crystal oscillator is already mounted on the emulation board. its frequency is 16 mhz. figure 3-3. when using clock that is already mounted on emulation board ie-78k4-ns IE-784928-NS-EM1 mounted oscillator (to be used) emulation probe target system resonator (not used) remark the clock that is supplied by the IE-784928-NS-EM1s oscillator (encircled in the figure) is used. (2) clock that is mounted by user the user is able to mount any clock supported by the set specifications on the IE-784928-NS-EM1. first mount the resonator on the parts board, then attach the parts board to the IE-784928-NS-EM1. this method is useful when using a different frequency from that of the pre-mounted clock. figure 3-4. when using user-mounted clock ie-78k4-ns target system emulation probe resonator (not used) IE-784928-NS-EM1 parts board resonator (to be used) remark the clock that is supplied by the IE-784928-NS-EM1s resonator (encircled in the figure) is used. chapter 3 installation users manual u13819ej1v0um00 25 (3) external clock an external clock connected to the target system can be used via an emulation probe. figure 3-5. when using an external clock ie-78k4-ns IE-784928-NS-EM1 clock generator (to be used) target system emulation probe remark the clock supplied by the target systems clock generator (encircled in the figure) is used. 3.3.2 main system clock settings table 3-1. main system clock settings IE-784928-NS-EM1 frequency of main system clock parts board (x1) cpu clock source selection (id) when using clock that is already mounted on emulation board 16 mhz oscillator used when using clock mounted by user oscillator assembled by user internal when using external clock other than 16 mhz oscillator not used external caution when using an external clock, open the configuration dialog box when starting the integrated debugger (id78k4-ns) and select external in the area (clock) for selecting the cpus clock source (this selects the users clock). remark the IE-784928-NS-EM1s factory settings are those listed above under when using clock that is already mounted on emulation board. (1) when using clock that is already mounted on emulation board when the IE-784928-NS-EM1 is shipped, a 16-mhz crystal oscillator is already mounted in the ie-784928-ns- em1s x1 socket. when using the factory-set mode settings, there is no need to make any other hardware settings. when starting the integrated debugger (id78k4-ns), open the configuration dialog box and select internal in the area (clock) for selecting the cpus clock source (this selects the emulators internal clock). chapter 3 installation users manual u13819ej1v0um00 26 (2) when using clock mounted by user the settings described under either (a) or (b) are required, depending on the type of clock to be used. when starting the integrated debugger (id78k4-ns), open the configuration dialog box and select internal in the area (clock) for selecting the cpus clock source (this selects the emulators internal clock). (a) when using a ceramic resonator or crystal resonator items to be prepared parts board (supplied with ie-78k4-ns) capacitor ca ceramic resonator or crystal resonator capacitor cb resistor rx solder kit chapter 3 installation users manual u13819ej1v0um00 27 <2> prepare the IE-784928-NS-EM1. <3> remove the crystal oscillator that is mounted in the IE-784928-NS-EM1s socket (the socket marked as x1). <4> connect the parts board (from <1> above) to the socket (x1) from which the crystal oscillator was removed. check the pin 1 mark to make sure the board is mounted in the correct direction. <5> make sure that the parts board mounted in the x1 socket on the emulation board is wired as shown in figure 3-6 above. <6> install the IE-784928-NS-EM1 in the ie-78k4-ns. the above steps configure the following circuit and enable supply of the clock from the mounted resonator to the emulation device. 1 m w 11 4 3 12 ca cb 13 2 5 10 rx 98 6 hcu04 hcu04 x vhc157 4.7 k w ay b ac125 hsk120 clk in v cc x1 ie-78k4-ns side (emulation device) vhc244 v cc remark the sections enclosed in broken lines indicate parts that are attached to the parts board. chapter 3 installation users manual u13819ej1v0um00 28 (b) when using a crystal oscillator items to be prepared crystal oscillator (see pinouts shown in figure 3-7) figure 3-7. crystal oscillator (when using main system clock or user-mounted clock) v cc clock out gnd nc chapter 3 installation users manual u13819ej1v0um00 29 the above steps configure the following circuit and enable supply of the clock from the mounted resonator to the emulation device. 4.7 k w clk in vhc244 v cc vhc157 ay b ie-78k4-ns side (emulation device) v cc crystal oscillator ac125 hsk120 v cc x1 (3) when using external clock no hardware settings are required for this situation. when starting the integrated debugger (id78k4-ns), open the configuration dialog box and select external in the area (clock) for selecting the cpus clock source (this selects the users clock). 3.3.3 subsystem clock settings when the IE-784928-NS-EM1 is shipped, a 32.768-khz crystal resonator is already mounted in the ie-784928- ns-em1. the system clock cannot be changed. chapter 3 installation users manual u13819ej1v0um00 30 3.4 pin mask function settings nmi interrupt mask setting by setting a switch (sw1) on the 4915ns chipset, or 4928 chipset in the IE-784928-NS-EM1, it is possible to mask the nmi interrupt, which is the alternate function of the p20 pin. table 3-2. slide switch setting for nmi interrupt mask function slide switch setting status sw1 no nmi mask (initial setting) off nmi masked on caution because the nmi interrupt is the alternate function of the p02/intp2 pin, this pin cannot operate as the p02/intp2 pin when the nmi mask status has been set. 3.5 low-voltage emulation setting low-voltage emulation is possible in the ie system. when the target system is operating on low voltage, supply the same voltage as the target system to the tp1 terminal pin of the IE-784928-NS-EM1 (this is unnecessary when tp1 is 5 v). set the target voltage between 2.7 and 5 v. maximum current consumption of tp1 5 v 300 ma .. .. .. 2.7 v 150 ma chapter 3 installation users manual u13819ej1v0um00 31 3.6 external trigger to set up an external trigger, connect it to the IE-784928-NS-EM1s check pin, extout pin, and extin pin as shown below. see the integrated debugger (id-78k4-ns) users manual (u12796e) for descriptions of related use methods and pin characteristics. figure 3-9. external trigger input position x1 socket tp1 extout extin users manual u13819ej1v0um00 32 [memo] users manual u13819ej1v0um00 33 chapter 4 emulation probe (ep-784928gf-ns) when using the IE-784928-NS-EM1 connected to the target system, a dedicated emulation probe (ep-784928gf- ns: sold separately) is needed. using the ep-784928gf-ns for connection enables debugging of the hardware and software of the target system in which the m pd784915, m pd784928, or m pd784928y subseries are employed. for connection details, refer to 4.2 connection procedure . 4.1 configuration of ep-784928gf-ns the configuration of the ep-784928gf-ns is described below. ep-784928gf-ns probe tip board (dummy board): 4915 yq pack pkg (100gf) probe tip board (dummy board): 4928 gc dummy (100gc) conversion socket: nev921gf-100 conversion socket: tgc-100sdw caution chipset boards are not included with the ep-784928gf-ns, so use the 4915 ns chipset and 4928 chipset included with the IE-784928-NS-EM1. figure 4-1. ep-784928gf-ns configuration diagram ep-784928gf-ns 4915 yq pack pkg (100gf) 4928 gc dummy (100gc) tgc-100sdw nev921gf-100 chapter 4 emulation probe (ep-784928gf-ns) users manual u13819ej1v0um00 34 4.2 connection procedure 4.2.1 emulation probe and target system connection (when using the 100-pin gf package) (1) solder the accompanying conversion socket (nev921gf-100) to the target system. (2) connect the 4915 yq pack pkg (dummy board) to the soldered conversion socket (nev921gf-100), and fix with screws. (3) plug the emulation probe tip into the 4915 yq pack pkg (dummy board). figure 4-2. emulation probe and target system connection (when using the 100-pin gf package) ep-784928gf-ns 4915ns chipset or 4928 chipset 4915 yq pack pkg nev921gf-100 target system ie-78k4-ns cn1 chapter 4 emulation probe (ep-784928gf-ns) users manual u13819ej1v0um00 35 4.2.2 emulation probe and target system connection (when using the 100-pin gc package) (1) solder the accompanying conversion socket (tgc-100sdw) to the target system. (2) connect the 4928 gc dummy (dummy board) to the soldered conversion socket (tgc-100sdw), and fix with screws. (3) plug the emulation probe tip into the 4928 gc dummy (dummy board). figure 4-3. ep-784928gf-ns and target system connection (when using the 100-pin gc package) ep-784928gf-ns 4915ns chipset or 4928 chipset 4928 gc dummy tgc-100sdw target system ie-78k4-ns cn1 users manual u13819ej1v0um00 36 [memo] users manual u13819ej1v0um00 37 chapter 5 differences between target devices and target interface circuits this chapter describes differences between the target devices signal lines and the signal lines of the ie-784928- ns-em1s target interface circuit. although the target device is a cmos circuit, the IE-784928-NS-EM1s target interface circuit consists of an emulation cpu, ttl, cmos-ic, and other emulation circuits. when the ie system is connected with the target system for debugging, the ie system performs emulation so as to operate as the actual target device would operate in the target system. however, some minor differences exist since the operations are performed via the ie systems emulation. (1) signals directly input/output to/from the emulation cpu (2) signals input from the target system via a gate (3) other signals the ie systems circuit is used as follows for signals listed in (1) to (3) above. (1) signals directly input/output to/from the emulation cpu the following signals perform the same operations as in the m pd784915, 784928 subseries. for the signals related to ports 0, 4, and 5, a 22- w resistor is inserted in series. the nmi performs mask control by means of sw1 on the chipset board. signals related to port 0 signals related to port 4 signals related to port 5 signals related to port 6 signals related to port 7 (a/d converter input) signals related to port 8 signals related to port 9 signals related to external input (intp0 to intp2) signals related to timer output (pt00 to pt02) signals related to serial communication (sck2, so2, si2/busy) signals related to a/d converter (ani08 to ani11) nmi chapter 5 differences between target devices and target interface circuits users manual u13819ej1v0um00 38 figure 5-1. equivalent circuit 1 of emulation circuit p00 to p07 22 w 22 w 22 w 1 m w 1 m w 1 m w p40 to p47 p50 to p57 p60 to p67 p70 to p77 p80 to p87 p90 to p96 p00 to p07 p40 to p47 p50 to p57 p60 to p67 p70 to p77 p80 to p87 p90 to p96 reel0in reel1in csyncin dfgin dpgin cfgin cfgampo cfgcpin ctldly recctl + recctl ctlin ctlout1 ctlout2 reel0in reel1in csyncin dfgin dpgin cfgin cfgampo cfgcpin ctldly recctl + recctl ctlin ctlout1 ctlout2 probe side ie system side chapter 5 differences between target devices and target interface circuits users manual u13819ej1v0um00 39 figure 5-2. equivalent circuit 2 of emulation circuit nmi v refc intp0 to intp2 pto00 to pto02 sck2 so2 si2/busy ani08 to ani11 av dd1 av dd2 av ss1 av ss2 nmi lv cc lv cc 4.7 k w av dd1 av dd2 leave open av ss1 av ss2 v refc intp0 to intp2 pto00 to pto02 sck2 so2 si2/busy ani08 to ani11 probe side ie system side chapter 5 differences between target devices and target interface circuits users manual u13819ej1v0um00 40 (2) signals input from the target system via a gate since the following signals are input via a gate, their timing shows a delay compared to that of the m pd784915, 784928 subseries. their ac characteristics and dc characteristics are therefore different from the m pd784928 subseries, making it necessary to observe a stricter timing design than in the case of the m pd784915, 784928 subseries. pwm0, pwm1 reset signal figure 5-3. equivalent circuit 3 of emulation circuit (3) other signals v dd pin when the emulation cpu is operating at 5 v, its power is supplied from the internal ie system, but when operating at low voltage, its power is supplied from the low-voltage pin (tp1). the v dd pin of the target system is only used to control the led (userv dd ) in the ie system that monitors the input of the target system's power supply. v ss pin the v ss pin is connected to gnd inside the ie system. pwm0, 1 27 w lv cc act244 vhc244 4.7 k w vhc244 reset pwm0, 1 probe side ie system side stop users manual u13819ej1v0um00 41 [memo] users manual u13819ej1v0um00 42 [memo] although nec has taken all possible steps to ensure that the documentation supplied to our customers is complete, bug free and up-to-date, we readily accept that errors may occur. despite all the care and precautions we've taken, you may encounter problems in the documentation. please complete this form whenever you'd like to report errors or suggest improvements to us. hong kong, philippines, oceania nec electronics hong kong ltd. fax: +852-2886-9022/9044 korea nec electronics hong kong ltd. seoul branch fax: 02-528-4411 taiwan nec electronics taiwan ltd. fax: 02-2719-5951 address north america nec electronics inc. corporate communications dept. fax: 1-800-729-9288 1-408-588-6130 europe nec electronics (europe) gmbh technical documentation dept. fax: +49-211-6503-274 south america nec do brasil s.a. fax: +55-11-6465-6829 asian nations except philippines nec electronics singapore pte. ltd. fax: +65-250-3583 japan nec semiconductor technical hotline fax: 044-548-7900 i would like to report the following error/make the following suggestion: document title: document number: page number: thank you for your kind support. if possible, please fax the referenced page or drawing. excellent good acceptable poor document rating clarity technical accuracy organization cs 99.1 name company from: tel. fax facsimile message |
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