le79234-sw Zarlink Semiconductor, le79234-sw Datasheet - Page 13
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le79234-sw
Manufacturer Part Number
le79234-sw
Description
Voiceedgetm Control Processor Software Package Next Generation Carrier Chipset Ngcc
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE79234-SW.pdf
(44 pages)
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1.9.2
Configuration D topology has the following features:
•
•
•
•
•
VP_RELAY_NORMAL
VP_RELAY_TALK
VP_RELAY_BRIDGED_TEST
POTS service with a relay to connect to a calibration circuit for In-Service Calibration and Self Testing.
Foreign voltages in excess of the SLIC power rail voltages can be measured when the PTC’s are activated
or if the fault current doesn’t exceed the SLIC current drive capability.
The relay is used to disconnect the loop during self-testing.
Calibration can be performed using a shared circuit connected to the Calibration Bus.
Self-test is performed using the calibration circuit or a per-channel test load resistor.
Configuration D Topology (VP_TERM_FXS_TI)
Software State
NGSLAC SVA
Le79271
NGSLIC
NGSLAC SVB
VBP
VBH
AD
AD
TLD
BD
BD
Table 4 - Configuration C Bus Connections
RSVB
RSVA
R
(optional)
Figure 3 - Configuration D Topology
LOAD
AD/BD
Zarlink Semiconductor Inc.
Le79234-SW
Over-Voltage
Protection
13
SVA/SVB
Calibration Bus
Calibration Bus
PTC or
Resistor
PTC or
Resistor
R
load
Calibration
Calibration
Relay
Relay
TIP/RING
A (TIP)
B (RING)
Data Sheet
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