PM7351 データシートの表示（PDF） - PMC-Sierra, Inc
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PM7351 Datasheet PDF : 2 Pages
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Octal Serial Link Multiplexer
PM7351 S/UNI-VORTEX
• LVDS link ID and S/UNI-VORTEX ID is
added to each cell (along with the PHY
ID already added by S/UNI-DUPLEX)
for use by ATM layer to identify cell
source.
LVDS TRANSMIT DIRECTION
• Per PHY and microprocessor port
back-pressure used on each of the 8
links to prevent overflow of
downstream buffers.
• Device polling: provides UTOPIA-like
TCA status for 264 PHYs based on
back-pressure from LVDS links.
• Cell transfer: Bus master adds a PHY
address to each cell via a 12 bit ID.
S/UNI-VORTEX decodes and accepts
cells for its links based on software
configured base address.
APPLICATIONS
• Single shelf or multi-shelf Digital
Subscriber Loop Access Multiplexer
(DSLAM)
• ATM, frame relay, IP switch
• Multi-service access multiplexer
• UMTS wireless base stations
• UMTS wireless base station controllers
• Multi-shelf access concentrators
TYPICAL APPLICATIONS
MULTI-SHELF 1024 LINE ATM DSLAM
xDSL PHY
1
ééé
xDSL PHY
32
UTOPIA Line Cards
S/UNI-DUPLEX
processor
S/UNI-VORTEX
ééé
S/UNI-VORTEX
processor
S/UNI-APEX
RAM
S/UNI-ATLAS
RAM
S/UNI-PLUS
Common Card,
working
modem
1
ééé
modem
16
Clock/Data Line Cards
S/UNI-DUPLEX
processor
S/UNI-VORTEX
ééé
S/UNI-VORTEX
8 Links per S/UNI-VORTEX
processor
S/UNI-APEX
RAM
S/UNI-ATLAS
RAM
S/UNI-PLUS
Common Card,
spare
PACKET ACCESS MULTIPLIER
modem
ééé
modem
Line Cards
S/UNI-DUPLEX
processor
S/UNI-
VORTEX
ééé
S/UNI-
VORTEX
S/UNI-
VORTEX
ééé
S/UNI-
VORTEX
8 Links per S/UNI-VORTEX
processor, flow
co-processor
Flow
Classifier
S/UNI-
APEX
Cut-thru
AAL5 +
Classifier
RAM
Freedm-NG
Framer
Common Card,
working
processor, flow
co-processor
Flow
Classifier
S/UNI-
APEX
Cut-thru
AAL5 +
Classifier
RAM
Freedm-NG
Framer
Common Card,
protection
Head Office:
PMC-Sierra, Inc.
#105 - 8555 Baxter Place
Burnaby, B.C. V5A 4V7
Canada
Tel: 604.415.6000
Fax: 604.415.6200
To order documentation,
send email to:
document@pmc-sierra.com
or contact the head office,
Attn: Document Coordinator
All product documentation is available
on our web site at:
http://www.pmc-sierra.com
For corporate information,
send email to:
info@pmc-sierra.com
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
PMC-990148 (P2)
1999 PMC-Sierra, Inc.
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