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motorola, incorporated semiconductor products sector 6501 william cannon drive west austin tx 78735-8598 suite56 pci command converter user? manual DSPCOMMPCIUM/d rev. 1.1, 07/1999 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
this document contains information on a new product. motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ?ypical?parameters which may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?ypicals?must be validated for each customer application by customer? technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and are registered trademarks of motorola, inc. motorola, inc. is an equal opportunity/affirmative action employer. all other tradenames, trademarks, and registered trademarks are the property of their respective owners. ?copyright motorola, inc., 1999. all rights reserved. f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1 2 suite56 pci command converter functional description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1 2 suite56 pci command converter functional description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
motorola table of contents v chapter 1 suite56 pci command converter 1.1 general description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2.1 windows pc requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2.2 hewlett packard workstation requirements . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2.3 sun ultra workstation requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 chapter 2 functional description 2.1 command converter interface connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.2 multiple target connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.3 tck drive and timing considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 2.4 resetting target dsp devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 table of contents f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
vi suite56 pci command converter user? manual motorola f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
motorola list of figures vii 1-1 command converter to target system configuration . . . . . . . . . . . . . . . 1-1 2-1 target v dd system jtag/once interface connector . . . . . . . . . . . . 2-1 2-2 target interface module? 14-pin jtag/once connector . . . . . . . . . . . 2-2 2-3 multiple jtag target connections (serial method) . . . . . . . . . . . . . . . . 2-3 2-4 multiple jtag connectors (parallel method) . . . . . . . . . . . . . . . . . . . . . 2-4 2-5 reset jtag device with reset signal . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 list of figures f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
viii suite56 pci command converter user? manual motorola f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
motorola suite56 pci command converter 1-1 chapter 1 suite56 pci command converter the motorola suite56 pci command converter is an interface device that, with the assistance of the motorola suite56 dsp software development tools debugger, allows you to send and receive information from your host system to your motorola dsp based system. the interface is from the pci bus on the host system, through a target interface module, to the dsp via a jtag connection. note: for more information on the motorola dsp suite56 software development tools debugger, refer to the suite56 software development debugger user's manual from the motorola suite56 software development tools cd or the dsp tools website on the world wide web at the following web address: http://www.motorola.com/sps/dsp/tools/documentation 1.1 general description the suite56 pci command converter is used for designing, debugging, and evaluating dsp-based systems. figure 1-1 shows how the command converter can be connected in a target system configuration and used as a hardware evaluation tool or as a software accelerator. figure 1-1. command converter to target system configuration host system target system 14-pin up to 24 target devices 2 x 7 connector aa2042 suite56 pci command converter 25-pin ocd ribbon cable target interface module 14-pin ribbon jtag cable f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1-2 suite56 pci command converter user? manual motorola operating environment the target system in figure 1-1 can be a motorola dsp application or evaluation board, or any user defined target system. the user defined target hardware must have an access point for the 14-pin jtag ribbon cable, that may be as simple as a 2-row 7-set of test points. the suite56 pci command converter provides a physical link between the host system and the target via a pci bus connection on the host card. this link translates the high-level debugger commands into jtag signals that enable the host system to reset, interrupt, and send commands to the target dsp. 1.2 operating environment the motorola dsp suite56 software development tools used for this suite56 pci command converter supports the following three host systems: windows pc hewlett packard workstations sun ultra workstations 1.2.1 windows pc requirements the minimum hardware requirements for using the motorola dsp suite56 software development tools debugger on a windows pc include the following: windows pc (pentium?class processor, or higher) windows?95 operating system with 16 mbytes of ram, windows?98 operating system with 32 mbytes of ram, or windows?nt 4.0 operating system with 32 mbytes of ram cd-rom drive hard drive with 50 mbytes of free space mouse and keyboard free pci bus slot f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
operating environment motorola suite56 pci command converter 1-3 1.2.2 hewlett packard workstation requirements the minimum hardware requirements for using the motorola dsp suite56 software development tools debugger on an hp workstation include the following: hp workstation running hp-ux version 9.05 or 10.20 (or higher) 32 mbytes of ram cd-rom drive hard drive with 50 mbytes of free space mouse and keyboard free pci bus slot 1.2.3 sun ultra workstation requirements the minimum hardware requirements for using the motorola dsp suite56 software development tools debugger on a sun ultra workstation include the following: solaris release 2.5.1 (or higher) 32 mbytes of ram cd-rom drive hard drive with 50 mbytes of free space mouse and keyboard free pci bus slot f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1-4 suite56 pci command converter user? manual motorola operating environment f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
motorola functional description 2-1 chapter 2 functional description the suite56 pci command converter interacts with the target dsp with the assistance of the suite56 software development tools debugger and the user's host system. the host system interface consists of a program written in the c language that sends commands via a pci bus to the suite56 pci command converter. commands entered from the host system's keyboard are parsed, and a series of low-level command packets are sent to the suite56 pci command converter. the suite56 pci command converter translates these low-level command packets into one or more jtag signals and once commands that are transferred to the target dsp via its jtag port. the jtag port provides the necessary control to the target so programs may be loaded or saved, registers read or modified, and hardware breakpoints set or cleared. 2.1 command converter interface connector the target application board must have a 14-pin connector to interface to the command converter controller. this interface comprises eight signals and three ground connections on a 7-row 2-column male pin header, which are spaced on one-tenth inch centers as illustrated in figure 2-1 on page 2-1. figure 2-1. target v dd system jtag/once interface connector tdi/dsi tdo/dso tck/dsck cc_reset key (no connect) gnd 1 2 3 4 5 6 7 8 9 10 vcc dsp reset pin target gnd v cc gnd 10k 10k 10k 10k top view 11 12 13 14 target v dd dez v cc 10k reset circuit tms0 (for jtag devices) trst (for jtag devices) (for jtag devices) dsp trst pin vcc 10k aa2037 (no connect) (no connect) f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
2-2 suite56 pci command converter user? manual motorola command converter interface connector note: figure 3-1 may not represent the exact jtag/once configuration needed for every dsp due to possible differences in internal resistors on the pins. please see the data sheet for your dsp for information on internal resistors. since the target system will have a resident reset circuit, an and gate-in-series is recommended with the cc_reset signal. this will allow the target dsp to be reset with a valid v ol level from either the target-reset circuit or from the command converter. the pull-down resistors are provided to prevent false signals from being propagated to the jtag/once circuit when the test data input/debug serial input (tdi/dsi) and test data clock/debug serial clock (tck/dsck) lines are active. the test data out/debug serial output (tdo/dso) pull-up is designed to deassert the debug acknowledge signal from the once circuit figure 2-2 is the connector coming from the target interface module via a 14-pin ribbon cable. when viewed with pin 8 (keyed) on the right side, this plug connector has all odd numbers on the left side and all even numbers on the right side when viewed from the top. spacing between pins is one-tenth inch. . figure 2-2. target interface module? 14-pin jtag/once connector tdi/dsi tdo/dso tck/dsck no connect cc_reset key (no connect) gnd 12 34 56 78 910 top view 11 12 13 14 target v dd dez tms0 (for jtag devices) trst (for jtag devices) (for jtag/once devices) aa2038 no connect f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
tck drive and timing considerations motorola functional description 2-3 2.2 multiple target connections multiple target devices may be connected in series, allowing a single command converter, jtag/once connector to control multiple devices, as in figure 2-3. data flows from the jtag host, into each jtag implementation through tdi, out through tdo and into tdi in the next chip, eventually returning to the jtag host. figure 2-3. multiple jtag target connections (serial method) 2.3 tck drive and timing considerations the signals from the command converter are tdo, tck and tms, and trst . the tck signal requires fast rise and fall times dictated by the tck pin timing specification, and consequently attention must be given to the drive capability of the circuits driving this signal. when driving the tck and tms circuits with a large number of target devices, the user must pay attention to the rise and fall times of tck and tms. excessive capacitance may cause communication problems when driving a single circuit that connects multiple tck or multiple tms input pins. excessive capacitance can also cause communication problems with a single circuit connecting multiple tms input pins. acceptable transition times may be achieved for tck and tms by driving no more than four jtag inputs from each buffered output. this may be achieved with two configurations. figure 2-3 shows one method. here (in effect) one signal connects each of the tck inputs, and one signal connects each of the tms inputs. a buffer is placed in the circuit after each fourth input at most, to restore the signal quality for subsequent inputs. the propagation delay of the buffer is not significant. tdi tdo tck tms tdi tdo tck tms tdi tdo tck tms tdi tdo tck tms tdi tdo tck tms tdi tdo tck tms tck tms tdo tdi maximum of 4 loads on tck circuits buffer?4hct244 or similar reset trst trst reset trst reset trst reset trst reset trst reset trst reset aa2039 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
2-4 suite56 pci command converter user? manual motorola resetting target dsp devices figure 2-4 shows two possible configurations of a second method that also enables signal quality to meet the requirements. in configuration number 1, the signal is split and buffered into a number of parallel tckn signals. each of these signals may drive up to four tck inputs. figure 2-4. multiple jtag connectors (parallel method) in configuration number 2, the signal is split and buffered into a number of parallel tmsn signals. each of these signals may drive up to four tms inputs. each method is equally valid. the choice of methods will depend on practical considerations related to each project. 2.4 resetting target dsp devices the reset signal and trst signals from the command converter are typically connected to all target dsp devices on a jtag chain. all dsp devices on a jtag chain connected to a specific command converter device are reset when r eset and trst are asserted by the debugger command force r. execution control is established immediately after tck tck tck tck tck tck tck tck tck tck tck tck tck 1 tck 2 tck n aa2040 tms tms tms tms tms tms tms tms tms tms tms tms tms 1 tms 2 tms n configuration number 1 ?an out of tck at source configuration number 2 ?an out of tms at source f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
resetting target dsp devices motorola functional description 2-5 deassertion of trst and before any instructions are executed. this sequence of events is illustrated in figure 2-5. figure 2-5. reset jtag device with reset signal the jtag controller is still active after deassertion of trst during reset and while reset is held low. the jtag special instruction debug_req is clocked in before reset is deasserted. when reset is deasserted, the device is immediately in debug mode, and no instructions are executed in the dsp. reset instruction register debug_req 1 23 1 2 3 (1) command converter asserts reset . all targets enter reset. (3) jtag instruction debug_request is loaded. (4) command converter releases reset . targets exit reset in debug mode. 1 trst (2) asserted trst aa2041 (2a) deasserted trst (1) (2) (2a) (3) (4) f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
2-6 suite56 pci command converter user? manual motorola resetting target dsp devices f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1 2 suite56 pci command converter functional description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
1 2 suite56 pci command converter functional description f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .

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