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Am79213/Am79C203/031 Data Sheet
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
via
the
microprocessor
interface.
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.
LINECARD BLOCK DIAGRAM
Transmit
Receive
DC Feed Control
Metering
Loop Voltage Monitor
Loop Current Monitor
ASLIC Device Operat-
ing State
Relay Driver Inputs
AD
BD
SA
SB
Loop Voltage
Sense Resistors
A(Tip)
B(Ring)
Ringer
Supply
Ring-Feed
Resistor
Relay Driver Outputs
ASLAC
Device
Ringing-Current
Sense Resistors
RFA
PCM
ASLIC
Device
RFB
MPI
Ring
and
Test
Relays
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