msm7540 Oki Semiconductor, msm7540 Datasheet
msm7540
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msm7540 Summary of contents
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... Single Rail ADPCM CODEC GENERAL DESCRIPTION The MSM7540/7560 are single channel ADPCM CODEC ICs which perform mutual transcoding between an analog voice band signal 300 to 3400 Hz and 32 kbps ADPCM serial data. Using advanced circuit technology, these devices operate using a single 5 V power supply and have low power consumption ...
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AIN1 – + GSX1 A/D AIN2 – RC- Conv. + LPF GSX2 SG V REF PDN CLOCK/ MCK TIMING RES LPS AOUT+ –1 – AOUT– + PWI D/A RC- VFRO Conv. LPF ...
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... PCMRO IR IS PCMSI PCMSO LPS AIN1 GSX1 AIN2 1 28 BCLKB 2 27 BCLKA 3 26 XSYNC 4 25 RSYNC 5 24 MCK PDN AOUT AOUT– PWI 13 16 VFRO 14 15 GSX2 28-Pin Plastic SOP FEDL7540-03 MSM7540/7560 DD 3/16 ...
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... W + 120 nF. Refer to Fig. 1 for gain adjustment. L Analog Input C1 C2 Transmit Gain: = (R2/R1) ¥ (R4/R3) Receive Gain: = (R6/R5) Z =120 350 W Figure 1 Analog Input/Output Interface R1 AIN1 – GSX1 R3 AIN2 – GSX2 VFRO RS* R5 PWI R6 AOUT– V Analog Output 0 AOUT Side Tone Pass (Gain = R6/RS) FEDL7540-03 MSM7540/7560 to ENCODER from DECODER – + –1 4/16 ...
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... V power supply. LPS PCM coding law selection. MSM7540 only ; if this pin goes to a "0" level, PCMSO, PCMSI, PCMRO, and PCMRI become the A-law character signal, and if these pins goes to a "1" level, the signal becomes a linear value character signal (2's complement). ...
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... PCM and ADPCM data. Synchronize this signal with BCLKA and BCLKB signal. RSYNC is used to indicate the MSB of the serial PCM and ADPCM data stream. BCLKA Shift clock input for the ADPCM data (IS, IR). The frequency is set in the range of 32 kHz to 2048 kHz. FEDL7540-03 MSM7540/7560 6/16 ...
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... Connect X2, the clock output pin, directly to the MCK pin. When using a conventional external clock of 10.368 MHz, X1 should be connected to the ground, leave X2 open, and provide the external clock through the MCK pin. <Using a self-oscilation circuit> MSM7540/ MCK 10.368 MHz FEDL7540-03 MSM7540/7560 <Using an external clock> MSM7540/ MCK 10.368 MHz 7/16 ...
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... BCLKA, BCLKB to RSYNC RS t RSYNC to BCLKA, BCLKB SR t XSYNC, RSYNC WS t — — (Pull-up Resistor IS, PCMSO, PCMRO DL C SG´GND SG FEDL7540-03 MSM7540/7560 Rating Unit –0 –0 0 –0 0 –55 to +150 °C Min. Typ. Max. Unit 4.5 — 5.5 V –25 ...
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... GSX1, GSX2 OGX L V Pre–OPAMPs OFGX V — — SG SG´GND 0 (Rise time to 90% of max. level) (MSM7540) PP (MSM7560) PP FEDL7540-03 MSM7540/7560 = 4 5 –25°C to +70°C) Min. Typ. Max. Unit — — 0.2 0 2.2 — 0.0 — 0.6 V — ...
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... AOUT– + 120 nF(See Fig.1) V VFRO OFVF AOUT+, AOUT– (GAIN = 0 dB), V OFAO Power amp only Power amp (0.3 to 3.4 kHz 350 W + 120 nF)(See Fig.1) L (MSM7540) PP (MSM7560) PP FEDL7540-03 MSM7540/7560 Min. Typ. Max. Unit 10 — — — — kW 1.2 — — kW — — 100 pF — ...
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... FEDL7540-03 MSM7540/7560 = 4 5 –25°C to +70°C) Min. Typ. Max. Unit 25 — — dB –0.15 — +0.20 dB Reference dB –0.15 — +0. — 0. — ...
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... GSX2 1020 0 VFRO Noise Freq. Noise Level — kHz : LSTTL + 100 pF, — — Pull-up: 500 W FEDL7540-03 MSM7540/7560 = 4 5 –25°C to +70°C) DD Min. Typ. Max. Unit –69 — — (–72) dBm0p –72 (dBmp) — — (–75) ...
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... Refer to the table below for code format. Input/Output level txd3 LSB txd3 LSB txd3 LSB txd3 LSB MSB to LSB +Full-scall 01111111111111 0 00000000000000 –Full-scall 10000000000000 FEDL7540-03 MSM7540/7560 txd3 LSB trd3 LSB 13/16 ...
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... PDN AOUT AOUT– AIN1 PWI 13 16 GSX1 VFRO 14 15 AIN2 GSX2 FEDL7540-03 MSM7540/7560 ADPCM Algorithm Reset Input Shift Clock Input for PCM, ADPCM Data (64 kHz to 2048 kHz) 8 kHz Sync Signal Input Power Down Input 14/16 ...
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... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). FEDL7540-03 MSM7540/7560 (Unit : mm) Package material Epoxy resin Lead frame material ...
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... No part of the contents contained herein may be reprinted or reproduced without our prior permission. 9. MS-DOS is a registered trademark of Microsoft Corporation. Copyright 1999 Oki Electric Industry Co., Ltd. Printed in Japan FEDL7540-03 MSM7540/7560 16/16 ...