Huawei SmartAX MA5600T Hardware Description page 468

SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
Working Principle
Figure 3-85 Working principle of the H80DCCPE board
Control
board
Vectoring
board
NOTE
The basic working principle of the H80DCCPE board is as follows:
l
l
l
l
l
l
Issue 24 (2018-07-30)
Backplane
H80DCCPE
RGMII
GE/
10GE
S3MII
-48V
Power
DC
module
power
Voltage required
by the board
Service Control
signal signal
l RGMII is a gigabit media independent interface.
l S3MII is a source synchronous serial media independent interface.
The control module loads the board software, controls the running of the board, and
manages the board.
The protection module protects and isolates the board from lightning strikes.
The splitter module separates POTS signals from VDSL2 signals over the subscriber
line.
The broadband interface module converts the VDSL2 line signals into cell flows.
The broadband service processing module implements functions such as encoding/
decoding, analog-to-digital conversion, and line drive for VDSL2 services. It then sends
VDSL2 services to the forwarding module through the RGMII interface.
The narrowband interface module provides access to 64-channel narrowband service.
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DSL
Control SPL
module module
HW
Narrowband
interface
module
Clock
module
Clock required
by the board
Power Clock
signal signal
3 Board
User side
LINE1
VTU-R
LINE0
448