msm7575 Oki Semiconductor, msm7575 Datasheet
msm7575
Manufacturer Part Number
msm7575
Description
Multi-function Pcm Codec
Manufacturer
Oki Semiconductor
Datasheet
1.MSM7575.pdf
(26 pages)
E2U0025-29-82
¡ Semiconductor
¡ Semiconductor
MSM7575
Multi-Function PCM CODEC
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.
This device performs DTMF tone and several kinds of tone generation, transmit/receive data
mute and gain control, side-tone pass and its gain control, and VOX function.
Using advanced circuit technology, this device operates from a single 3 V power supply and
provides low power consumption.
FEATURES
• • • • • Single 3 V Power Supply Operation
• • • • • Transmit/Receive Full-Duplex Single Channel Operation
• • • • • Transmit/Receive Synchronous Mode Only
• • • • • PCM Interface Data Format :
• • • • • Serial PCM Transmission Data Rate :
• • • • • Low Power Consumption
• • • • • Two Analog Input Amplifier Stages:
• • • • • Analog Output Stage
• • • • • Master Clock Frequency :
• • • • • Transmit/Receive Mute, Transmit/Receive Programmable Gain Control
• • • • • Side Tone Path with Programmable Attenuation
• • • • • 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
• • • • • Built-in Op-amps and Analog Switches for Various Analog Interfaces.
• • • • • Package:
64-pin plastic QFP
Operating Mode :
Power-Down Mode :
Transmit side
Receive side
(QFP64-P-1414-0.80-BK)(Product name : 7575GS-BK)
:
:
A-law/ -law/linear (2's complement) Selectable
64 kbps to 2048 kbps
0.03 mW Typ. (V
Externally Gain Adjustable
Push-pull Drive (direct drive of 350 W + 120 nF)
9.600/19.200 MHz Selectable
Voice/Silence Signal Detect
Background Noise Generation
V
24 mW Typ. (V
DD
: 2.7 V to 3.6 V
(8-step Level Adjustment)
DD
DD
Previous version: Jan. 1998
= 3.0 V)
= 3.0 V)
This version: Aug. 1999
MSM7575
1/25
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