PMC-Sierra,Inc.
PM3380
• Hardware statistics collection supports
RMON-I (nine groups), Ethernet MIB,
and SNMP agent functions.
• All statistics registers and data
structures accessible through the CMI.
• Supports the implementation of
Spanning Tree (IEEE 802.1D) by
exchanging BPDU packets on all ports.
Gigabit Ethernet Switch Port Controller
FEATURES
• Monolithic intelligent Gigabit Ethernet
Switch Port Controller.
• Integrates an IEEE 802.3z-compatible
Gigabit MAC.
• May be used alone or in combination
with other devices to build 10/100 or
Gigabit switches.
• Supports the Gigabit EXACT™ Bus
Protocol for device interconnect.
• May be used alone or in combination
with other device to build high density
Gigabit switches.
• PM3390 EXACT Bus Switch Matrix
allows non-blocking expansion up to
16 Gigabit ports.
• Layer 2 line rate address lookup
capability for all Ethernet port
configurations supported.
• Store-and-forward switching using
output association input buffering for
efficient memory use without Head Of
Line (HOL) blocking.
• Supports up to 8,000 MAC addresses.
• 1022 multicast groups available.
Bitmask per group defines
membership.
• EXACT Bus is compatible with
common serial devices for simple
system stacking using coax or twinax
cable.
• Support for IEEE 802.1D bridging and
spanning tree algorithm in an external
processor.
• Embedded SmartPath™ Processor
supports value-added datapath
operations.
• Two 32-bit memory interfaces for
flexible combinations of SSRAM and
EPROM allow cost optimization of
different applications.
• Programmable packet pattern
matchers for identification of ARP,
RARP, ICMP, and other protocol or
packet types.
Gigabit
Ethernet
Interface
Transmit
Control
Gigabit
Media
Access
Control
Address
Resolution
Logic
Egress
Queue
Manager
SmartPath
CPU
EXACT Bus
Input Port
Receive
Control
Micro
Interface
Memory
Port
Controller
Memory
Port
Controller
Ingress
DMA Unit
Ingress
Queue
Manager
EXACT
Ring
Interface
EXACT Bus
Output Port
VALUE ADD
• Control and Management Interface
provides standard interface for non
real-time access to data structures
(such as SNMP and RMON
applications).
• Customer product differentiation is
enabled by applications using CMI
calls to leverage EXACT system
resources.
VLAN
• Up to 4094 IEEE 802.1Q VLAN tags
with support for 4094 FIDs.
• Up to 1022 active VLANs.
• Ingress filtering of packets.
• Shared and independent learning.
• GARP, GVRP, GMRP packet
identification and forwarding to
external CPU for processing.
• Tag insertion and removal for unicast
and multicast packets.
COMPATIBILITY
• Interworks with the PM3370 Octal
10/100 Switch Port Controller.
• Interworks with the PM3390 Eight Port
EXACT Bus Switch Matrix.
PACKAGING
• Provides a standard five signal
P1149.1 JTAG test port for boundary
scan board test purposes.
• Implemented in low power 3.3 V,
CMOS technology with 5 V tolerant MII
interface.
• Available in a 352-pin Ball Grid Array
(BGA) package.
PRIORITY
• Class of service supported via IEEE
802.1D (formerly 802.1p) with two
levels of priority.
BLOCK DIAGRAM
System Clock
EXACT Bus
Reference Clock
Microprocessor
Interface
MANAGEMENT
• System Interface provided in CMI to
support standard SNMP software
packages, or the porting of existing
management software.
Global
Registers
JTAG
JTAG
SDRAM
SSRAM
©
1999 PMC-Sierra, Inc.
PMC-980236 (R7)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
PMC [ PMC-SIERRA, INC ]
