MSM7570L-01 Datasheet, PDF (1/26 Pages) OKI electronic componets – Multi-Function ADPCM CODEC

E2U0028-28-82
¡ _¡ Semicond_Suc_etor_miconductor
MSM7570L-01/02
Multi-Function ADPCM CODEC
This ver_Msi_So_Mn:₇A₅₇u₀g_L. _-1₀9₁9_/8₀₂
Previous version: Nov. 1996
GENERAL DESCRIPTION
The MSM7570L-01/02, developed for advanced digital cordless telephone systems, are single
channel ADPCM CODEC ICs which perform mutual transcoding between the analog voice band
signal and 32 kbps ADPCM serial data.
The devices include DTMF Tone and several types of tone generation, transmit/receive data
mute and gain control, side-tone path and gain control, and VOX function.
Using advanced circuit technology, these devices operate from a single 3 V power supply and
provide low power consumption.
Note: The MSM7570L–01differs from MSM7570L–02 in Ringing Tone Frequency.
FEATURES
• Single 3 V Power Supply Operation
V_DD: 2.7 V to ␣ 3.6 V
• ADPCM Algorithm :
ITU-T G.726 (32 kbps, 24 kbps, 16 kbps)
• Full-Duplex Transmit/Receive Operation
• Transmit/Receive Synchronous Mode Only
• PCM Data Format :
A-law/µ-law Selectable
• Serial PCM/ADPCM Transmission Data Rate :64 kbps to 2048 kbps
• Low Power Consumption
Operating Mode :
Power-Down Mode :
• Two Analog Input Amplifier Stages :
21 mW Typ. (V_DD = 3.0 V)
0.3 mW Typ. (V_DD = 3.0 V)
Externally Adjustable Gain
• Analog Output Stage :
Push-pull Drive (direct drive of 350 W␣ + 120 nF)
• Master Clock Frequency :
12.288/19.200 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/Function Tones Generator
• Built-in Various Ring Back Tone Generator
• Serial MCU Interface Control
• Built-in Sounder Driving Amplifier
• Built-in VOX Control
Transmit side :
Voice Signal Detect
Receive side :
Background Noise Generation
• Characteristic Evaluation Board.
• Package:
32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name: MSM7570L-01TS-K)
(Product name: MSM7570L-02TS-K)
1/26