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MSM7708-02 Datasheet

  • MSM7708-02

  • Serial Register Interface ADPCM CODEC for Telephone Recordin...

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E2U0044-16-X2
隆 Semiconductor
MSM7708-02
隆 Semiconductor
This version: Jan. 1998
MSM7708-02
Previous version: Nov. 1996
Serial Register Interface ADPCM CODEC for Telephone Recording
GENERAL DESCRIPTION
The MSM7708-02 is a CMOS IC developed for applying to PHS (Personal Handyphone System).
This device provides a CODEC function which performs transcoding between the voice band
analog signal and 32 kbps ADPCM data. It also provides a serial register interface function for
telephone call recording.
Provided with such functions as DTMF tone and several kinds of tone generation, transmit/
receive data mute and gain control, side-tone pass, and voice/silence detection, the MSM7708-
02 is best suited for PHS handsets.
FEATURES
鈥?Single 3 V power supply operation (V
DD
: 2.7 V to 3.6 V)
鈥?Low power consumption
When system is operating: 6 mA typ.
When powered down: 0.02 mA typ.
(ADPCM CODEC)
鈥?ADPCM: ITU-T Recommendations G.721 (32 kbps)
鈥?Transmit/receive full duplex capability
鈥?PCM interface code format:
m-law
or A-law selectable
鈥?Serial ADPCM and PCM transmission rate: 64 kbps to 2,048 kbps
鈥?Transmit/receive mute function; transmit/receive programmable gain setting
鈥?Side tone generator (8-step level adjustment)
鈥?Built-in DTMF tone, ringing tone, and various tone generators
鈥?Built-in VOX function
(Serial Register Interface)
鈥?Interface for a serial register: 1 Mb (MSM63V89C), 4 Mb (MSM6684), 8 Mb (MSM6685)
鈥?Interface for a serial voice ROM: 1 Mb (MSM6595A), 2 Mb (MSM6596A), 3 Mb (MSM6597A)
鈥?Maximum recording time: 32 s (1 Mb), 128 s (4 Mb), 256 s (8 Mb)
鈥?Maximum recording channels: 32 ch
鈥?Playback data transmit/receive selectable
鈥?Package:
64-pin plastic TQFP (TQFP64-P-1010-0.50-K) (Product name : MSM7708-02TS-K)
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