PM7354 ETC-unknow, PM7354 Datasheet
PM7354
Manufacturer Part Number
PM7354
Description
Dual Ethernet Serial Link, Dsl Phy Multiplexer
Manufacturer
ETC-unknow
Datasheet
1.PM7354.pdf
(2 pages)
FEATURES
• The S/UNI DUPLEX GE is a monolithic
• The extended (up to 144 ports) Utopia
APPLICATIONS
• Ethernet DSLAM: ADSL/VDSL line
• ATM DSLAM: FE or GE WAN uplink
• ATM multi-service switch: GE interface
• Router: ATM line cards
• Wireless base station: ATM to Ethernet
PMC-2040392
Issue 1
Monolithic IC for ATM to Ethernet Interworking at GE Wire Speed
integrated circuit supporting wire speed
ATM to Ethernet inter-working at GE
rates. It provides the AAL5 SARing,
queuing/buffering, traffic management,
address translation, and multicast
functions necessary for interfacing an
ATM Utopia Level 2/POS-PHY Level 2
interface to 10/100/1000 Ethernet
interfaces.
Level 2 bus is designed to
accommodate the higher line densities
typical of ADSL DSLAMs. The dual
Ethernet integrated SERDES
accommodates backplane applications
where a 1:1 redundant Ethernet
interface is required. A separate parallel
Ethernet port creates the high
performance local interface needed for
packet add/drop applications such as
IGMP snooping.
cards and WAN uplink card
cards
interworking.
BLOCK DIAGRAM
GES
Ingress
GEP
Ingress
MPB
Ingress
Enet In
Enet In
Enet In
ATM In
MSTAT
MSTAT
MSTAT
Enet to AAL5 IWF
Enet to AAL5 IWF
Enet to AAL5 IWF
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC.,
AND FOR ITS CUSTOMERS’ INTERNAL USE
• Dual fully integrated, 1.25Gbit/s, 8B10B
• An additional (R)GMII / (R)MII parallel
• One 52 MHz, 16 bit Utopia Level 2
• One asynchronous 16 bit CPU interface
• One 32-bit SDRAM interface supporting
ETHERNET TO ATM PROCESSING
• Receives Ethernet frames from both
INTERFACES
encoded 4-wire LVDS SERDES
interface for connecting the internal GE
MACs directly to a high-speed,
redundant serial back-plane or external
PHY.
Ethernet interface, which can also be
configured as two RMII interfaces.
interface (Tx and Rx), extended to
support up to 144 PHYs as per ATM
Forum Utopia Level 2 specification af-
phy-0039.000, Appendix 1. This
interface is also configurable as a
SATURN compliant 52-MHz, 16-bit
POS-PHY Level 2 interface (Tx and Rx)
for device configuration and
alarm/status monitoring.
up to 2 Gbits of packet buffering.
Configurable as either DDR-I or DDR-
II.
SERDES interfaces and the parallel
interface simultaneously. Uses frame
filtering to drop redundant traffic
received on the protection SERDES
interface.
Multicast
RAM Interface
MSFF
Traffic Managment
QMGR
QS2M
MCAST
DDR
QS600E
QS576A
QS600E
RCTL
AAL5 to Enet IWF
AAL5 to Enet IWF
AAL5 to Enet IWF
• Uses VLAN tag (802.1q VLAN address
• SERDES to UL2/PL2, parallel Ethernet
• For traffic directed to the UL2/PL2
• Performs IP/Ethernet packet level
• Software configurable congestion
+ 802.1p QoS bits) to identify traffic as
unicast or multicast, and to identify
destination port and class.
to UL2/PL2, SERDES to parallel
Ethernet and parallel Ethernet to
SERDES switching are all supported.
interface, performs RFC2684
compliant AAL5 segmentation for
origination of up to 576 ATM AAL5
VCs. Ethernet to ATM VCI/VPI
mapping provided via a software
configurable internal lookup table.
multicast using wire-speed packet
replication. Unicast and multicast
traffic is queued independently and is
merged onto the egress port via the
egress traffic scheduler. Head of line
blocking is avoided completely.
management policies implementing
Early Packet Discard & Partial Packet
Discard (EPD/PPD) or weighted
random early packet discard (WRED)
during periods of egress port
congestion.
S/UNI Duplex GE
Enet Out
Enet Out
ATM Out
© Copyright PMC-Sierra, Inc. 2005
All rights reserved.
PM7354
GES
Egress
GEP
Egress
MPB
Egress
CSU
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PM7354 Summary of contents
Page 1
... QS600E QS2M QS576A Multicast MSFF MCAST AND FOR ITS CUSTOMERS’ INTERNAL USE PM7354 S/UNI Duplex GE • Uses VLAN tag (802.1q VLAN address + 802.1p QoS bits) to identify traffic as unicast or multicast, and to identify destination port and class. • SERDES to UL2/PL2, parallel Ethernet ...
Page 2
... 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 PM7354 S/UNI Duplex GE • Software configurable, QoS aware and source port fairness aware egress traffic scheduling from the 576 packet reassembly queues into the Ethernet interfaces. ...