Working Principle And Signal Flow - Huawei ATN 950B Hardware Description

ATN 950B Multi-service Access Equipment
Hardware Description
Table 5-13 Functions and features of the AND1EM8F
Function and Feature
Basic function
Interface function
Clock

5.4.3 Working Principle and Signal Flow

The AND1EM8F mainly consists of the service access module, service processing module,
management module, clock module, and power supply module.
Figure 5-7
Figure 5-7 Block diagram for the functions of the AND1EM8F
Transmit Direction
The service packets from AND1CXPA/AND1CXPB are sent to the service processing module
through the backplane-side interface of the EM8F. The service processing module identifies the
Issue 03 (2012-07-23)
shows the block diagram for the functions of the AND1EM8F.
8 x FE/GE
optical signals
Service access
module
Management bus
Management
module
Each module on the board
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Description
Supports eight FE/GE optical interfaces, on which FE optical
modules and GE optical modules can be mixedly used.
Accesses 8 x FE/GE electrical signals, and processes the
services with the AND1CXPA/AND1CXPB.
Supports the hot swappable function.
Detects the temperature and voltage of the board.
Supports PHY-layer inloop and outloop.
Supports MAC-layer outloop.
Supports automatic loopback release at the port.
Supports synchronous Ethernet.
Supports SSM protocol.
Supports IEEE 1588V2 protocol.
Supports 1588 ACR clock.
Service
Service signals
processing
module
Management bus
Clock
module
Management bus
3.3V
3.0V
Power
2.5V
supply
1.8V
module
1.2V
5 Physical Interface Card
Back plane
Service signals
Clock signals
Clock signals
System power
-48V/-60V
System power
-48V/-60V
CXP
CXP
CXP
supply
supply
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