|
MSM6895 Datasheet, PDF (1/43 Pages) OKI electronic componets – Multi-Function PCM CODEC | |||
|
E2U0022-28-81
¡ ¡ SemicondSucetormiconductor
MSM6895/6896
Multi-Function PCM CODEC
This versiMonS:MA6u8g9.51/9698896
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-Tâs 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)
1/43
|
▷ |