Description
CHIPSET OF RINGING SUBSCRIBER LINE INTERFACE CIRCUIT (RSLIC) & QUAD PROGRAMMABLE PCM CODEC PRELIMINARY IDT82V1671 (RSLIC) IDT82V1074 (CODEC) .
The RSLIC-CODEC chipset is comprised of one four-channel programmable PCM CODEC (IDT82V1074) and four single-channel ringing SLICs (IDT82V1671).
Features
* Programmable DC feeding characteristics
* Programmable digital filters adapting to different requirements:
* Impedance matching
* Transhybrid balance
* Transmit and receive gain adjustment
* Frequency response correction
* Off-hook and ground
Applications
* such as VoIP, VoATM, PBX, CO and DLC etc. CHIPSET FUNCTIONAL BLOCK DIAGRAM
Protection Circuit
Telephone
RSLIC 1#
CODEC
Level Metering Off-hook Detection DC Feed
Protection Circuit
Telephone
MPI Interface
Microprocessor
RSLIC 2#
Protection Circuit
Telephone
RSLIC 3#
DSP Filtering
PCM/GCI