E2U0022-28-81
¡ Semiconductor
MSM6895/6896
¡ Semiconductor
Multi-Function PCM CODEC
This version: Aug. 1998
MSM6895/6896
Previous version: Nov. 1996
GENERAL DESCRIPTION
The MSM6895/MSM6896, developed especially for low-power and multi-function applications
in ISDN telephone terminals, are single +5 V power supply CODEC LSI devices. The devices
consist of the analog speech paths directly connectable to a handset, the calling circuit directly
connectable to a piezosounder, the push-button key scanning interface between push buttons
and control processors, the dial tone generator, the B-channel interface, the CODEC, and the
processor interface. The functions can be controlled via the 8-bit data bus.
FEATURES
• Single +5 V Power Supply
• Low Power Dissipation
Power ON Mode
: 20 mW Typ. 53 mW Max.
CODEC Power Down Mode
: 10 mW Typ. 21 mW Max.
• In compliance with ITU-T’s companding law
m-law
: MSM6895
A-law
: MSM6896
• Transmission clocks
Continuous CLK
: 64, 128, 256 kHz
Burst CLK
: 192, 384, 768, 1536, 2048 kHz
• Built-in PLL
• Built-in Reference Voltage Supply
• Ringing Tone
: Controlled by processor, 9 modes
• Ringing Tone Combination
: Controlled by processor, 6 modes
• Information Tone
: Controlled by processor, 9 modes
• Built-in PB Tone Generator
• B-Channel Selectable
• General Latch Output for Speech path Control
: 4 bits
• Watchdog Timer
: 500 ms
• Key Scanning I/O
Output
: 5 bits
Input
: 8 bits
• Direct Connection to Handset
• Built-in Preamplifier for Loudspeaker
• Handfree Interface
• Digital and Analog Interface for the phone-conference speech paths
• Package:
80-pin plastic QFP (QFP80-P-1420-0.80-BK) (Product name : MSM6895GS-BK)
(Product name : MSM6896GS-BK)
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