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

μ-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)