le79234-sw Zarlink Semiconductor, le79234-sw Datasheet - Page 14

• Manufacturer Part Number: le79234-sw
• Description: Voiceedgetm Control Processor Software Package Next Generation Carrier Chipset Ngcc
• Manufacturer: Zarlink Semiconductor

Configuration D supports the relay states listed in
Connectivity for the various relay states is listed in
1.10
The VoicePath™ Test Library delivered with the NGVCP ATP configuration includes a calibration function that can
be used to improve the testing accuracy. Performing the line testing on an external calibration circuit (see
identifies the correction factors that will be applied against subsequent results.
Two classes of calibration can be performed, Factory Calibration and In-Service Calibration.
Factory Calibration would be performed at the time the line card is manufactured, prior to the line card being
shipped. Correction factors would be stored on the respective line card board. Using Factory Calibration requires
the user to store the calibration factors in non-volatile memory and re-apply theses factors as needed.
In-Service Calibration can be performed after the line card is deployed. To achieve this, a test relay is required.
Configuration C does not include a relay and can only be calibrated at the Factory by applying the calibration circuit
directly to the line A and B leads.
Configuration D has a relay that can provide Calibration Bus access to perform In-Service Calibration. Of course
the Factory Calibration can also be performed with Configuration D.
VP_RELAY_NORMAL
VP_RELAY_TALK
VP_RELAY_TEST
VP_RELAY_DISCONNECT
VP_RELAY_BRIDGED_TEST
VP_RELAY_SPLIT_TEST
VP_RELAY_NORMAL
VP_RELAY_TALK
VP_RELAY_TEST
VP_RELAY_DISCONNECT
VP_RELAY_BRIDGED_TEST
VP_RELAY_SPLIT_TEST
Calibration
Software State
Software State (VpRelayState)
Table 5 - Software States for Configuration D
Table 6 - Configuration D Bus Connections
AD/BD
Zarlink Semiconductor Inc.
Le79234-SW
Test load switch off
Test load switch off
Test load switch off, Calibration relay activated
Test load switch off, Calibration relay activated
Test load switch on
Test load switch on, Calibration relay activated
Table
SVA/SVB
Table
14
5. See the API-II Reference Guide for details.
6.
R
load
Description
Calibration
Bus
TIP/RING
Data Sheet
Figure
4)