MSM7557
MSM7557 is Single Chip MSK Modem with Compandor for Cordless Telephone manufactured by OKI Electric.
E2A0046-16-X1 ¡ Semiconductor
¡ Semiconductor
This version: Jan. 1998 MSM7557 Previous version: Nov. 1996
Single Chip MSK Modem with pandor for Cordless Telephone
GENERAL DESCRIPTION
The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone. The MSM7557 voice transmit block consists of high pass filter, pressor, pre-emphasis, limiter and splatter filter. Voice receive block consists of Band pass filter, De-emphasis and Expander.
Features
- Available to transmit modem signal and also transmit base band voice signal through wireless transmission path (0.3 kHz to 3.4 kHz)
- Built-in pandor circuit
- Upper limit of voice band (3306...
