Huawei SmartAX MA5600T Hardware Description page 382

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-63 Working principle of the H801TOPB board
Backplane
Control
board
-48V
DC
power
The basic working principles of the H801TOPB board are as follows:
l
l
l
l
l
The service processing procedure of the H801TOPB board is as follows:
Issue 24 (2018-07-30)
H801TOPB
GE
Voltage required
by the board
Service
signal
The control module loads the board software, and controls and manages the entire board.
The service processing module allocates the GE bus of the backplane and processes
signals.
The interface module converts signals.
The power module supplies power to other function modules of the board.
The clock module provides the working clock signals for other function modules of the
board.
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Service
Interface
processing
module
module
Control
module
Clock
Power
module
module
Clock required
by the board
Control Power
signal signal
3 Board
User side
STM-1
interface
Clock
signal
362