AM79C202 Legerity, AM79C202 Datasheet - Page 3

• Manufacturer Part Number: AM79C202
• Description: (AM79C202 / AM79212) PCM CODEC
• Manufacturer: Legerity

The Am79212/Am79C202 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-program-
mable line interface card for multiple country applica-
tions world wide. All AC, DC, and Signaling parameters
are fully programmable via the General Control Inter-
LINECARD BLOCK DIAGRAM
A(Tip)
B(Ring)
Ringer
Supply
Relays
Ring
Test
and
Ring-Feed
Resistor
Relay Driver Outputs
Loop Voltage
Sense Resistors
RFA
RFB
ASLIC/ASLAC Products
AD
SA
SB
BD
ASLIC
Device
face (GCI). 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. Use of the
accompanying Technical Reference, document PID
21324A is recommended.
ASLIC Operating State
Loop Current Monitor
Loop Voltage Monitor
Sense Resistors
Ringing-Current
Relay Driver Inputs
DC Feed Control
Metering
Transmit
Receive
ASLAC
Device
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