The MSM7719 is a semiconductor chip designed for PHS (Personal Handyphone System) applications. It integrates a line echo canceler, an acoustic echo canceler for handsfree conversation, and a single channel full-duplex ADPCM transcoder. The chip features DTMF tone generation, tone generation, data mute and gain control, and VOX function.
The MSM7719‑01 is an LSI device developed for Personal Handyphone System (PHS) use. It integrates a line echo canceller, an acoustic echo canceller for hands‑free conversation, and a single‑channel full‑duplex ADPCM transcoder. The device also provides DIMF tone generation, mute and gain control, and VOX function.
The chip operates from a single 5 V supply, draws about 50 mA in normal mode, and supports data rates from 64 kbps to 2.048 Mbps. It is supplied in a 100‑pin plastic TQFP package (TQFP100‑P‑1414‑0.50‑K).
| Supply voltage | 5 V (Vpp 4.5 V to 5.5 V) |
|---|---|
| ADPCM standard | ITU‑T G.726 |
| PCM interface coding | µ‑law (p‑law) |
| Echo attenuation | 30 dB (typ.) |
| Cancelable echo delay (line) | 27 ms (max.) |
| Cancelable echo delay (acoustic) | 27 ms (max.) |
| Operating mode current | Typical 50 mA at 5 V |
| Power‑down current | Typical 0.2 mA at 5 V |
| Master clock frequency | 9.6‑10.0 MHz or 19.2‑20.0 MHz |
| Serial PCM/ADPCM data rate | 64 kbps to 2 048 kbps |
| Package type | 100‑pin plastic TQFP (TQFP100‑P‑1414‑0.50‑K) |
The device typically draws 50 mA in operating mode at a 5 V supply.
The echo attenuation is 30 dB typical.
No, the MSM7719 does not support 8‑bit (64 kbps) data communication.
The master clock must be 9.6‑10.0 MHz or 19.2‑20.0 MHz.