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fedl7012-06-02 issue date: jun. 28, 2004 ML7012-06 2400 bps single chip full dupl ex data modem with protocol 1/23 general description the ML7012-06 is a single chip modem lsi device that enables data communication conforming to itu-t recommendations v.22bis, v.22 and v.21. this lsi is also equipped with the error correction protocol function complying with mnp-class 4. (the mnp-class 4 is available in v.22bis or v.22 mode.) the ML7012-06 consists of high speed dsp, analog front end, and digital logic circuit. in addition, this device provides local analog loop testing, synchronous/asynchronous converter, dialing, and auto answering functions. the ML7012-06 has an ex ternal serial interface. when integrated in to the system, it is controlled from a control cpu through a serial interface (e.g . uart). by connecting a level co nverter, the ML7012-06 can easily implement a modem that can be controlled through the rs-232c-interface. features ? conforming to itu-t recommendations v.22 bis, v.22, and v.21: asynchronous ? error correction function compliant to mnp-class 4 ? serial interface: v.24 interface ? at commands (excluding automatic command speed detection) ? terminal data speed between dte and dce: 9600 bps, 2400 bps, 1200 bps, 300 bps ? character format: 10 bit/character ? dtmf generating function ? pulse-dial control signal outputs ? call progress tone detection ? auto answering function ? built-in electronic hybrid circuit (a line transformer can be directly coupled) ? single +3 v power supply ? power consumption: typ.= 35ma (vdd=3.3v) ? package: 64-pin plastic qfp (qfp64-p-1414-0.80-bk) (ML7012-06ga) * mnp (microcom networking protocol) is a registered trademark of hewlett-packard company (previously microcom corp.)
fedl7012-06-02 ML7012-06 2/23 block diagram ML7012-06 rly2 rly1 aout rci rcao txai tx an tx ap ain gsr sg spk ri i vdda gnda ? + ? + ? + ? + afe rts cts dcd dsr dtr ci std srd speed1, 0 pdn / rs t osc0 osc1 tst2 to 0 ti8 to 0 to1 0 to 0 vdd2, 1 gn d2 , 1 modulation/ demodulation uart to each section control section sg gen. clock generation to ne detection to ne generation
fedl7012-06-02 ML7012-06 3/23 pin configuration (top view) n c dsr dcd to 9 to1 0 dtr ci ti8 to 0 to 1 to 2 speed1 speed0 ti0 ti1 nc tx ap tx an txai rcao rci aout vdda osc1 osc0 ti7 ti6 ti5 nc pdn / rst ts t0 nc nc ti2 ti3 vdd1 ti4 spk to3 to4 nc to5 to 6 to7 tst2 tst1 gnd1 nc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 34 36 35 34 33 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 to8 cts gnd2 rt s srd std rly2 nc rly1 r ii vdd2 gsr ain sg gnda n c 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 64-pin plastic qfp note: pins marked (nc) are no-co nnection pins that are left open.
fedl7012-06-02 ML7012-06 4/23 pin descriptions system & clock symbol type description osc0 i osc1 o pins to connect crystal, resistors and capacitors for the master clock oscillation. when supplying the master clock from an exte rnal source, use osc0 and leave osc1 open. master clock frequency = 11.0592 mhz. when pdn / rst = ?0?, osc1 outputs ?1?. refer to the "connection of crystal osc illator" in page 20 for further details. pdn / rst i power-down and reset control input pin. when pdn / rst = ?0?, this device is in the power-down state and internal circuits are reset. ?0?: power-down state, ?1?: normal operation after power-on, set this pin to ?0? for 1 s or more to reset internal circuits. 230 ms (min.) is required to resume normal operation after reset release. if this pin remains at ?0? after power-on, th e internal circuits become undefined and the power-down current may increase. to avoid this, input ?1? to this pin and start oscillation or input the master clock to operate the internal circuits, and then set it to ?0? v.24 serial interface symbol type description std i transmission data input pin ?0?: space, ?1?: mark srd o receive data output pin ?0?: space, ?1?: mark when pdn / rst = ?0?, srd outputs ?1?. rts i rts (request to send) signal input pin ?0?: on, ?1?: off cts o cts (clear to send) signal output pin ?0?: on, ?1?: off when pdn / rst = ?0?, cts outputs ?1?. dcd o dcd (data carrier detect) signal output pin ?0?: on, ?1?: off when pdn / rst = ?0?, dcd outputs ?1?. dsr o dsr (data set ready) signal output pin ?0?: on, ?1?: off when pdn / rst = ?0?, dsr outputs ?1?. dtr i dtr (data terminal ready) signal input pin ?0?: on, ?1?: off ci o ci (calling indicator) signal output pin (*2) ?0?: on, ?1?: off when pdn / rst = ?0?, ci outputs ?1?.
fedl7012-06-02 ML7012-06 5/23 analog interface symbol type description aout o transmit analog output pin when pdn / rst = ?0?, aout is in a high impedance state. rci i operational amplifier input pin constituting transmit rc active rcao o operational amplifier output pin constituting transmit rc active when pdn / rst = ?0?, rcao is in a high impedance state. txai i input pin of the first line transformer drive amplifier txan o output pin of the first line transformer drive amplifier when pdn / rst = ?0?, txan is in a high impedance state. txap o output pin of the second line transformer drive amplifier outputs the inverted signal of txan when pdn / rst = ?0?, txap is in a high impedance state. ain i input pin of the receive input amplifier gsr o output pin of the receive input amplifier when pdn / rst = ?0?, gsr is in a high impedance state. sg o output of internal signal ground circuited connect to gnda through 1 ? f capacitor. when pdn / rst = ?0?, sg is in a high impedance state. pstn line control interface symbol type description rly1 o output pin of signals to control off-hook and dial pulses. (*1) ?0? : on-hook or break state of dial pulse, ?1? : off-hook or make state of dial pulse when pdn / rst = ?0?, this pin outputs ?0?. rly2 o output pin of signals to control a connection to a parallelly connected telephone. (*1) ?0? : phone line is connected to the parallelly connected phone ?1? : phone line is connected to the modem (the parallelly connected phone is disconnected from the phone line) when pdn / rst = ?0?, this pin outputs ?0?. rii i call-in state input pin. (*2) input ?0? when call-in is detected. input ?1? when call-in is not detected. when a ring detect circuit is not used, input ?1?. spk o output for speaker control signal ?0? : speaker on , ?1?: speaker off when pdn / rst = ?0?, this pin outputs ?1?. other interface symbol i/o description data transmission speed between dte and dce speed 1 speed 0 speed speed 1 i 0 0 300 bps 0 1 1200 bps 1 0 2400 bps speed 0 i 1 1 9600 bps
fedl7012-06-02 ML7012-06 6/23 test interface symbol type description tst2 to 0 i test pins for the lsi manufacturer. input ?0?. in normal operation state, input ?0? to all of the ti8 to 0. the input combination in the table below realizes test modes. (input ?0? to ti8, ti6, ti5, ti3, and ti2 in the case, too.) ti7 ti4 ti1 ti0 test function, description 1 0 0 0 continuous output of dtmf tones (code a) 1 1 0 0 continuous output of originate scramble ?1? of v.22bis (2400bps) 1 1 0 1 continuous output of answer scramble ?1? of v.22bis (2400bps) 1 0 1 0 ac loop test it takes approx. 2 seconds to get into the ac loop test mode. rts signal is required to be on. ti8 to 0 i when entering a test mode, execute reset using pdn / rst pin after ti8 to 0 are set as intended. when escaping from the test mode, execute reset using pdn / rst pin after ti8 to 0 are set to ?0?. to10 to 0 o leave open power supply symbol type description vdda i analog vdd pin. supply 2.7 - 3.6v. connect a ceramic capacitor with good high freque ncy characteristics (0 .1 to 1f) and an electrolytic capacitor (10 to 20f) in parallel between this terminal and gnda. gnda i analog gnd pin vdd2 to 1 i digital vdd pins. supply 2.7 - 3. 6v. supply the same voltage to the vdda. connect a ceramic capacitor with good high freque ncy characteristics (0 .1 to 1f) and an electrolytic capacitor (10 to 20f) in pa rallel between this terminal and gnd2/gnd1. gnd2 to 1 i digital gnd pins. (*1) pre-pause dialing communicating commands rly1 rly2 (*2) rii ci line connection 150ms 400ms acall - in signal
fedl7012-06-02 ML7012-06 7/23 absolute maximum ratings parameter symbol rating unit power supply voltage v dd -0.3 to +5.0 v analog input voltage v ain -0.3 to v dd +0.3 v digital input voltage v din -0.3 tov dd +0.3 v power dissipation p d to 500 mw output short-circuit current i out to 90 ma storage temperature t stg -55 to +150 ? c recommended operating conditions parameter symbol condition min. typ. max. unit power supply voltage ? v dd ? 2.7 ? 3.6 v operating temperature t op ? -20 +25 +70 ? c high level input voltage v ih 0.7 ? v dd ? v dd v low level input voltage v il all digital input pins excluding osc0 0 ? 0.16 ? v dd v digital input rise time tir ? ? 20 ns digital input fall time tif all digital input pins ? ? 20 ns input clock frequency deviation fmck 11.0592 mhz -100 ? +100 ppm master clk duty ratio dmck input to osc0 40 50 60 % digital output load c dl digital output pins ? ? 50 pf r1to r3 resistance ratio (r3/r1) rrat1 ? ? 1 1.05 ? rrat2 v dd ? 3v ? ? 2 ? r4to r5 resistance ratio (r5/r4) rrat3 v dd ? 2.7v ? ? 1.6 ? sg bypass capacitor c sg sg pin 1 ? ? ? f oscillator feedback resistance r osc between osc0 and osc1 800 1000 1200 k ? osc0 and osc1 load capacitance c o1 , c o2 osc0 and osc1 pins ? 15 ? pf oscillation frequency ? ? ? 11.0592 ? mhz frequency deviation ? including temperature characteristics -80 ? +80 ppm equivalent seri es resistance *1 ? ? ? ? 90 ? crystal load capacitance *1 ? ? ? 12 ? pf ?
fedl7012-06-02 ML7012-06 8/23 electrical characteristics dc characteristics (v dd = 2.7v to 3.6 v, ta = -20 ? c to +70 ? c) parameter symbol condition min. typ. max. unit i dd ? ? 35 65 ma power supply current i dds during power-down (*1) ? 1 1000 a i ih v i =v dd ? 0 20 a input leakage current i il v i =0v ? 0 20 a v oh1 i 0h = -5ma (*2) 0.8 ? v dd 0.96 ? v dd ? v high level digital output voltage v oh2 i 0h = -0.4ma (*3) 0.8 ? v dd 0.99 ? v dd ? v low level digital output voltage v ol i 0l =3.2ma ? 0.1 0.4 v input capacitance c in ? ? 5 ? pf *1 when the power down mode is activated while the device is in operating mode. *2 applicable to rly1 and rly2 pins. the output current from these pins must be limited less than 8 ma by the external circuitry. *3 applicable to all digital output pins except rly1 and rly2.
fedl7012-06-02 ML7012-06 9/23 analog interface (v dd = 2.7v to 3.6 v, ta = -20 ? c to +70 ? c) parameter symbol condition min. typ. max. unit input resistance r in rci, txai, ain ? 10 ? m ? r l1 aout, rcao, gsr 20 ? ? k ? output load resistance r l2 between txan and txap 1080 ? ? ?? output load capacitance c l analog output ? ? 100 pf sg output voltage v sg sg 1.3 1.4 1.65 v sg output impedance r sg sg ? 30 ? k ? carrier output level vaom aout, s34 = 0 db -19.5 -18.0 -16.0 dbm *1 dtmf low group output level vdtl aout , s35 = 0 db -17.0 -15.5 -13.5 dbm dtmf high group output level vdth aout , s35 = 0 db -16.0 -14.5 -12.5 dbm dtmf output frequency precision tsdf ag ainst nominal frequency -1.5 ? +1.5 % answer tone output level vaoat aout, s34 = 0 db -20.0 -18.0 -15.5 dbm answer tone output frequency precision tsaf against 2100 hz -10 ? +10 hz vs1 4 to 8 khz ? ? -20 dbm vs2 8 to 12 khz ? ? -40 dbm undesired sending level vs3 txan, txap 12 khz or more (each 4 khz band) ? ? -60 dbm carrier receive input level vgsr gsr level -46 ? -15 dbm von off ? on -46 ? ? dbm carrier detection level voff gsr level *2 on ? off ? ? -54 dbm carrier detection delay time t cdd ? off ? on ? 25 ? ms carrier detection hold time t cdh ? on ? off ? 15 ? ms answer tone detection / non-detection level atdl gsr level ? -50 ? dbm call progress tone detection / non-detection level cpdl gsr level ? -50 ? dbm *1 the unit of the signal level (dbm) is 0 dbm = 0.775 vrms at 600 ? *2 the values of the carrier detection level ar e those for qam, psk and fsk modulation signals.
fedl7012-06-02 ML7012-06 10/23 command descriptions at commands command format : at commands begin with or . character strings to a carriage return code are interpreted as commands to be executed successively. a result code is returned to dte after the completion of interpretations. at command, command, command, .... cr lf however, the commands of a, d, dc, on, zn, ax, &tn and &zn must be set at the end of the sequence of commands. commands following above commands in the same command line are ignored. the maximum command character string is 40 characters (space <20h> is ignored). input characters can be deleted only by a backspace functio n in default (the code assignment can be altered). is a carriage return code in default (the code assignment can be altered). is a line feed code (not mandato ry; the code assignment can be altered). both capital and small letters can be recognized with the exception of at and at. the communication with the terminal when inputting commands is handled in async hronous mode, and the char acter format is checked automatically as soon as or is input. normal operation of the device cannot be guaranteed, when character strings or parameters not listed below are input. terminal data speed and character format : the communication mode to dte with the v.24 interface is as follows: terminal data speed : 9600/2400/1200/300 bps character format : listed below start bit data bit parity stop bit character length 1 7 none 2 10 1 7 odd number 1 10 1 7 even number 1 10 1 8 none 1 10
fedl7012-06-02 ML7012-06 11/23 at command list : if a parameter (n) is not specified in the command line, a default value n=0 is assumed. cmd style function initial value note +++at ? switches from the data mode to the on-line command mode. it becomes effective when it is inputted as follows. +++at switching to the on-line command mode is performed after the input of . ? at and don't go before the command. a ata starts line connection in answer mode ? atd starts line connection in originate mode ? d at d c connects lines in originate mode after dialing. c: dial control character pulse: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 tone: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, *, # @ silence detection dialing is executed when continuous s ilence of 5 sec is detected within the period specified in s7 register. sends back ?busy? when busy tone is detected and sends back ?no answer? when no silence is detected after ring back tone. ! flash on-hook for 0.5sec, and off-hook again. , comma dialing is put on hold for the period specified in the s8 register for pause settings. ; moves to command mode without di sconnecting lines after dialing is completed. p: dials the numbers in pulse mode thereafter. t: dials the numbers in tone mode thereafter. w: detects a dial tone. continues the dial string process when a dial tone is detected during the period specified in s7 register regardless of atxn command settings. when no dial tone is detected , ?no dialtone? is returned. ? e aten select the command echo back option. n=0: the command input characters are not echoed-back. n=1: the command input characters are echoed-back. 1 h athn controls the line connection. n=0: on-hook n=1: off-hook ? i ati0 returns the modem manufacturer?s code. the execution of ati0 will results in return of a result code, ?24a?, back to the dte. ? m atmn selects the monitor speaker operation. n=0: always off n=1: on from dialing to line connection n=2: always on n=3: on when connected with a remote modem 1 o ato returns from the on-line command mode to the data mode. ? p atp set to pulse dialing mode ?
fedl7012-06-02 ML7012-06 12/23 cmd style function initial value note q atqn selects the result code transmission. n=0: result code is transmitted. n=1: result code is not transmitted. 0 atsr sets the pointer value for s register to ?r?. ? atsr? echoes back the contents of s register specified by ?r?. ? s atsr=d sets the content of s register specified by ?r? to ?d?. ? t att sets dialing mode to dtmf. ? v atvn selects the type of result code. n=0: number n=1: characters 1 selects the extended result code and call progress tone detection. n 0 1 2 3 4 function result code o o o o o line connection 300 bps connect ? o o o o line connection 1200 bps connect 1200 ? o o o o line connection 2400 bps connect 2400 ? ? o ? o dial tone detection no dial tone x atxn ? ? ? o o busy tone detection busy 4 z atz reset in the same way the pdn / rst pin is set to ?0?. ? &c at&cn controls data carrier de tection signals (dcd). n=0: always sets dcd to on. n=1: controls dcd by detecting reception carriers. 0 &d at&dn controls the modem depende nt upon dtr signal state. n=0: ignores dtr signals. n=1: ignores dtr signals but goes to on-line command mode when the change of dtr from on to off is detected during data mode. n=2, and 3:terminates the call and goes to command mode when the change of dtr from on to off is detected during data mode. 2 &g at&gn sets the guard tone transmission. n=0: no guard tone n=1: with guard tone of 550 hz n=2: with guard tone of 1800 hz 0 &p at&pn sets the make ratio of pulse dialing. n=0: 39% (10pps) n=1: 33% (10pps) n=2: 33% (20pps) 1 &t at&tn controls the loop back test mode. n=0: ceases test mode n=1: starts local analog loop back test (alb) n=2 or 3: none n=4: responds to the rdl test request n=5: does not respond to the rdl test request n=6: starts remote digital loop back test (rdl) n=7: starts rdl self-diagnostic test. n=8: starts alb self-diagnostic test. ? %e at%en selects automatic re-training function due to p oor incoming conditions of the receive section. n=0: automatic re-t raining is disabled. n=1: automatic re-training is enabled. 1
fedl7012-06-02 ML7012-06 13/23 cmd style function initial value note \l at\ln checks kinds of line connection and returns the result n=0: checks whether it?s connected with a pbx (0-starting dialing) or directly connected to pstn. n=1:.checks between pulse dial ing line or tone dialing line - \n at\nn selects data control mode. n=0,1: selects normal mode (without error correction). n=2,3,4,5: none n=6 : selects reliable mode. disconnects the line when mnp connection is not available. n=7 : selects auto-reliab le mode. connects in no rmal mode when mnp connection is not available. 7 \q at\qn selects the flow control between dte and modem. n=0: no flow control (connects in direct mode when at\nn=at\n0 or at\n1) n=1,2: none n=3: bi-directional control by cts/rts 3 only 1200/2400bps mode is available in direct mode. \v at\vn selects extended result code. n=0: displays the normal result code. n=1: displays the result code with the mode of the mnp connection. n=2, 3: none 0 note : when the data rate between the dte and the dce is 9600bps and the normal mode is set, set the n-value to 3 in at\qn. note : connecting in direct mode, a prior check to see if the modem on the remote side is also in a direct mode must be made.
fedl7012-06-02 ML7012-06 14/23 result codes result code description : the result code is returned to dte after at command is executed. two types of result codes are available and can be selected by the vn command. it is po ssible to select whether the result code is returned or not by using the qn command. the format of 2 types of result codes is as follows: in the case of number number cr in the case of characters cr lf result character string cr lf result code list : number character string meaning 0 ok command is correctly executed. 1 connect connected. 2 ring call-in signal is detected. 3 no carrier aborted the connection or on-hook 4 error found the error in the command 5 connect 1200 connected at 1200 bps 6 no dial tone dial tone cannot be detected. 7 busy busy tone is detected. 8 no answer silence stat e cannot be detected. 10 connect 2400 connected at 2400 bps 12 connect 9600 connected at 9600 bps in normal mode 22 connect 1200/rel connected at 1200 bps in mnp mode 23 connect 2400/rel connected at 2400 bps in mnp mode 90 ext judges as pbx connection 91 direct judges as direct connection 92 dtmf judges as tone dialing line 93 pulse judges as pulse dialing line
fedl7012-06-02 ML7012-06 15/23 registers s register setting : in this modem, memory used as s registers is provided in ram to set variables used for modem environment settings or to read modem status. normal operation is not guaranteed when register numbers no t specified in this data sheet or parameters outside the specification are input. (1) s register setting the format to set s registers is as follows: at = specifies the register no. in decimal (0 to 27, 34, 35). specifies the number to be set from decimal 0 to 255. if no number is specified at and , it is regarded as ?0?. (2) s register reference the format to refer to s registers is as follows: at s < n > specifies the register no. in decimal (0 to 27, 34, 35) if no number is specified at , it is regarded as ?0?.
fedl7012-06-02 ML7012-06 16/23 s register list : refer to the ?bit map s register list? if the function is specified as ?bit map register?. register no. set range unit initial value function 0 0-255 time 0 setting of the number to receive the ring signal in automatic receive mode. when set to ?0?, automatic receive function is disabled. 1 0-255 time 0 the number of rings received 2 ? ? ? not used 3 0-127 ascii code 13 carriage return code 4 0-127 ascii code 10 line feed code 5 0-127 ascii code 8 back space code 6 4-255 sec 4 pause time from off-hook to start dialing (only when setting atx0, x1, and x3) 7 1-115 sec 60 waiting time for carrier from the far end modem. the device is set to on-hook when no carrier is detected after the time specified. 8 0-255 sec 2 pause time for dialing. it is referred when dial character < , > is used. 9 ? ? ? not used 10 1-255 1/10 sec 14 carrier lost detection time the device is set to on-hook automatically when the lost of carrier signal is longer than the specified time. carrier lost detection is invalid when 255 is set. 11 1-255 1/100 sec 9 dtmf tone transmit time sets dtmf transmit time. dt mf tone is continuously transmitted when set at 255. 12 ? ? ? not used 13 ? ? ? not used 14 ? ? 170 bit map register 15 ? ? ? not used 16 ? ? 0 bit map register 17 ? ? ? not used 18 0-255 sec 0 timer for loop back test 19 ? ? ? not used 20 ? ? ? not used 21 ? ? 18 bit map register 22 ? ? 244 bit map register 23 ? ? 23 bit map register 24~27 ? ? ? not used 34 0-255 db 2 sets the level attenuator of transmit carrier. when 15 to 255 is input, value is fixed to 15. 35 0-255 db 0 sets the sending level atte nuator of dtmf signal. when 15 to 255 is input, value is fixed to 15. * refer to the ?analog interface? for the analog transmit level for s34 and s35. * waiting time for carrier from the far end mode m set by s7 starts at a timing of off-hook.
fedl7012-06-02 ML7012-06 17/23 bit map register list : s14 bit initial value function enabled by ?0? function enabled by ?1? command 7 1 answer mode originate mode a, d 6 0 not used not used 5 1 tone dial pulse dial t, p 4 0 pulse speed = 10pps pulse speed = 20pps &p 3 1 makes the result code the number. makes the result code the character string. v 2 0 with the result code no result code q 1 1 no echo back with echo back e 0 0 not used not used s16 bit initial value function enabled by ?0? function enabled by ?1? command 7 0 not used not used 6 0 stops analog loop back self-diagnos tic. analog loop back self-diagnostic &t8 5 0 stops remote digital loop b ack self-diagnostic. remote digital loop b ack self-diagnostic &t7 4 0 stops remote digital loop back te st. remote digital loop back test &t6 3 0 not used not used 2 0 not used not used 1 0 not used not used 0 0 stops analog loop back test. analog loop back test &t1 s21 bit initial value function enabled by ?0? function enabled by ?1? command 7 0 not used not used 6 0 not used not used 5 0 cd signal is always on. cd signa l is on by carrier detection. &c 4 1 3 0 0 0 &do 0 1 &d1 1 0 &d2 1 1 &d3 &d dtr control 2 0 not used not used 1 1 auto re-train disabled auto re-train enabled %e 0 0 not used not used s22 bit initial value function enabled by ?0? function enabled by ?1? command 7 1 pulse dial make ration = 39% pulse dial make ration = 33% &p 6 1 5 1 4 1 0 0 0 x0 1 0 0 x1 1 0 1 x2 1 1 0 x3 1 1 1 x4 x extended command 3 0 2 1 0 0 m0 0 1 m1 1 0 m2 1 1 m3 m 1 0 not used not used 0 0 not used not used
fedl7012-06-02 ML7012-06 18/23 s23 bit initial value function enabled by ?0? function enabled by ?1? command 7 0 6 0 0 0 &g0 0 1 &g1 1 0 &g2 1 1 &g3 &g 5 0 4 1 0 0 parity even no. 0 1 parity mark 1 0 parity odd no 1 1 parity none 3 0 not used not used 2 1 not used not used 1 1 not used not used 0 1 ignores the remote digital loop b ack request. complies to the remote digital loop b ack request. &t4, &t5
fedl7012-06-02 ML7012-06 19/23 typical application circuits analog interface ? + sg gen. ? + aout r1 r3 c2 c1 r2 rcao tx ai rci txan ? + r4 r5 c3 0. 022 ? f 600 ? : 600 ? r6 600 ? ? + line txap ra rb (=ra) ain r7 r8 gsr sg ? the 2nd order lpf should be built to make fc approximately 5 khz using the built-in amplifier, r1 to r3, and c1 and c2. numeric examples: r1 = r2 = r3 = 68 k ? c1 = 1000 pf, c2 = 220 pf ? when v dd ? 3 v, r5/r4 ? 2 ? when v dd < 3 v, r5/r4 ? 1.6 c4 1 f ? + ML7012-06
fedl7012-06-02 ML7012-06 20/23 an example of level diagram 1. modem transmission, v dd ? 3 v aout = -20dbm, rcao = -20dbm, txan = -14dbm, txap = -14dbm, line = -16dbm (s34 = 2db(default), r5/r4 = 2, loss at a transformer = 2db) 2. dtmf transmission, v dd ? 3 v dtmf high group level, dtmf low group level is approx. 1db lower than below. aout = -14.5dbm, rcao = -14.5dbm, txan = -8.5dbm, txap = -8.5dbm, line = -10.5dbm (s35 = 0db(default), r5/r4 = 2, loss at a transformer = 2db) 3. modem transmission, v dd ? 2.7v aout = -20dbm, rcao = -20dbm, txan = -15.9dbm, txap = -15.9dbm, line = -17.9dbm (s34 = 2db(default), r5/r4 = 1.6, loss at a transformer = 2db) 4. dtmf transmission, v dd ? 2.7v dtmf high group level, dtmf low group level is approx. 1db lower than below. aout = -14.5dbm, rcao = -14.5dbm, txan = -10.4dbm, txap = -10.4dbm, line = -12.4dbm (s35 = 0db(default), r5/r4 = 1.6, loss at a transformer = 2db) 5. modem receive (max.) line= -9dbm, at connection of r6 and r7 = -11dbm, gsr= -15dbm, (r8/r7 = 0.63 = -4db, loss at a transformer = 2db) 6. modem receive (min.) line= -40dbm, at connection of r6 and r7 = -42dbm, gsr= -46dbm, (r8/r7 = 0.63 = -4db, loss at a transformer = 2db) connection of crystal oscillator connect a 11.0592 mhz crystal and a 1 m ? feedback resistor between osc0 and osc1. the values of capacitors c 01 and c 02 connected between osc0 and gnd, an d osc1 and gnd vary with the load capacitance of the crystal and the wiri ng capacitance of the board. set the values by the crystal manufacture?s matching evaluation. if an external clock is used, input it to osc0. c 01 15pf osc0 osc1 1 m ? r osc 11.0592 mhz c 02 15pf
fedl7012-06-02 ML7012-06 21/23 package dimensions qfp64-p-1414-0.80-bk mirror finish package material epoxy resin lead frame material 42 alloy pin treatment solder plating ( 5 m) package weight (g) 0.87 typ. 5 rev. no./last revised 6/feb. 23, 2001 notes for mounting the surface mount type package the surface mount type packages ar e very susceptible to heat in reflow mounting and humidity absorbed in storage. therefore, before you perform reflow mounting, contact rohm's responsible sales person for the product name, package name, pin number, package code, and desired mounting conditions (reflow method, temperature and times). (unit: mm)
fedl7012-06-02 ML7012-06 22/23 revision history page document no. date previous edition current edition description fedl7012-06-01 may 2004 ? ? first edition 1 1 literal brush-up of descriptions under general description 1 1 literal brush-up of descriptions under features 4 4 literal brush-up of descriptions under std pin description 11 11 correction of atd! function 12 12 functional description alternation for at&t0 13 13 alternation of note for at\qn setting in normal mode. fedl7012-06-02 jun 28, 2004 17 17 correction of functional descriptions for bit-7 and bit-6 of s21 bit map register.
fedl7012-06-02 ML7012-06 23/23 notice no copying or reproduction of this document, in part or in whole, is permitted without the consent of lapis semiconductor co., ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of in troducing lapis semiconductor's products (hereinafter "products"). if you wish to use any such product, pleas e be sure to refer to the specifications, which can be obtained from lapis semiconductor upon request. examples of application circuits, circuit constants a nd any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the in formation specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, lapis semiconductor shall bear no responsibility for such damage. the technical information specified herein is intended on ly to show the typical functions of and examples of application circuits for the products. lapis semiconductor does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by lapis semiconductor and other parties. lapis semiconductor shall bear no responsibility what soever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while lapis semiconductor always makes efforts to e nhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measur es to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire contro l and fail-safe designs. lapis semiconductor shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). lapis semiconductor shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. copyright 2011 lapis semiconductor co., ltd.

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