GENERAL DESCRIPTION

The MSM7575, developed for advanced digital cordless telephone systems, is a single channel full duplex CODEC which performs mutual transcoding between the analog voice band signal and the 64 kbps PCM serial data.

FEATURES

• Single 3 V Power Supply Operation VDD: 2.7 V to ␣ 3.6 V

• Transmit/Receive Full-Duplex Single Channel Operation•

• Transmit/Receive Synchronous Mode Only

• PCM Interface Data Format : A-law/µ-law/linear (2s complement) Selectable

• Serial PCM Transmission Data Rate : 64 kbps to 2048 kbps•

• Low Power Consumption

Operating Mode : 24 mW Typ. (VDD = 3.0 V)

Power-Down Mode : 0.03 mW Typ. (VDD = 3.0 V)

• Two Analog Input Amplifier Stages: Externally Gain Adjustable•

• Analog Output Stage

Push-pull Drive (direct drive of 350 Ω + 120 nF)

• Master Clock Frequency : 9.600/19.200 MHz Selectable•

• Transmit/Receive Mute, Transmit/Receive Programmable Gain Control

• Side Tone Path with Programmable Attenuation (8-step Level Adjustment)•

• Built-in DTMF Tone Generator

• Built-in Various Ringing Tones Generator•

• Built-in Various Ring Back Tone Generator

• Control by Serial MCU Interface•

• Built-in VOX Control

Transmit side : Voice/Silence Signal Detect

Receive side : Background Noise Generation

• Built-in Op-amps and Analog Switches for Various Analog Interfaces.•

• Package:

64-pin plastic QFP (QFP64-P-1414-0.80-BK)(Product name : 7575GS-BK)