Working Principle
Figure 3-85 Working principle of the H80DCCPE board
Power
module
Voltage required
by the board
-48V
DC
power
Clock
module
Clock required
by the board
User side
Backplane
RGMII
B
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k
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P
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SPL
module
DSL
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S3MII
HW
VTU-R
LINE1
LINE0
Control
module
Service
signal
Control
signal
Power
signal
Clock
signal
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Narrowband
interface
module
B
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GE/
10GE
Control
board
Vectoring
board
H80DCCPE
NOTE
l RGMII is a gigabit media independent interface.
l S3MII is a source synchronous serial media independent interface.
The basic working principle of the H80DCCPE board is as follows:
l The control module loads the board software, controls the running of the board, and
manages the board.
l The protection module protects and isolates the board from lightning strikes.
l The splitter module separates POTS signals from VDSL2 signals over the subscriber
line.
l The broadband interface module converts the VDSL2 line signals into cell flows.
l 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.
l The narrowband interface module provides access to 64-channel narrowband service.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
3 Board
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
448
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