AM79213 Legerity, AM79213 Datasheet - Page 4

• Manufacturer Part Number: AM79213
• Description: (AM79C203/031 / AM79213) PCM CODEC
• Manufacturer: Legerity

The Am79213/Am79C203/031 Advanced Subscriber
Line Interface chip set implements a universal telephone
line interface function. This enables the design of a single,
low cost, high performance, fully software programmable
line interface card for multiple country applications world
wide. All AC, DC, and signaling parameters are fully
programmable
LINECARD BLOCK DIAGRAM
A(Tip)
4
B(Ring)
Ringer
Supply
Relays
Ring
Test
and
via
Ring-Feed
Resistor
the
Relay Driver Outputs
Loop Voltage
Sense Resistors
microprocessor
RFA
RFB
Am79213/Am79C203/031 Data Sheet
interface.
AD
SA
BD
SB
ASLIC
Device
Additionally, the ASLIC device and ASLAC device have
integrated self test and line test capabilities to resolve
faults to the line or line circuit. The integrated test
capability is crucial for remote applications where
dedicated test hardware is not cost effective. The
Technical Reference, PID 21325A is recommended to be
used with this document.
ASLIC Device Operat-
Loop Voltage Monitor
Loop Current Monitor
Sense Resistors
Ringing-Current
Relay Driver Inputs
DC Feed Control
ing State
Metering
Transmit
Receive
ASLAC
Device
PCM
MPI