PMC-980235 (R6)

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

© 1999 PMC-Sierra, Inc.

PMC-Sierra,Inc.

Octal 10/100 Mbit/s Switch Port-Controller

PM3370

FEATURES

• Monolithic intelligent octal 10/100

Ethernet Switch Port Controller.

•Integrates eight 10/100 MACs that

connect to physical layer devices over

standard IEEE 802.3u MIIs.

• Supports the Gigabit EXACT Bus

Protocol for device interconnect.

•May be used alone or in combination

with other devices to build high density

10/100 switches.

• PM3390 EXACT Bus Switch Matrix

allows non-blocking expansion up to

96 10/100 Mbit/s ports.

•Layer 2 line rate address lookup

capability for all Ethernet port

configurations supported.

• Store-and-forward switching using

output associated input buffering for

efficient memory use without Head Of

Line (HOL) blocking.

• Supports 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,

SDRAM, and EPROM allows cost

optimization of different applications.

• Programmable packet pattern

matchers for identification of ARP,

RARP, ICMP, and other protocol or

packet types.

MANAGEMENT

•System Interface provided in CMI to

support standard SNMP software

packages, or the porting of existing

management software.

• Hardware statistics collection supports

RMON-I (9 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.

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 CUP for processing.

•Tag insertion and removal for unicast

and multicast packets.

PRIORITY

• Class of service supported via IEEE

802.1D (formerly 802.1p) with two

levels of priority.

VALUE ADD

• Control and Management Interface

provides standard interface for non

real-time access to data structures

(such as SNMP and RMON

applications).

•A MAC bypass mode (ENTRE mode)

allows a 800 Mbit/s full duplex access

channel into the device with 32-bit

FIFO bus.

• Allows connection of proprietary ASICs

to an EXACT system.

• Supports ATM or Packet over SONET

applications.

• Customer product differentiation is

enabled by applications using CMI

calls to leverage EXACT resources.

COMPATIBILITY

• Interworks with the PM3380 Gigabit

Switch Port Controller.

• Interworks with the PM3390 8-Port

EXACT Bus Switch Matrix.

PACKAGING

• Provides a standard 5-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.

Eight

Independent

MII Interfaces

Microprocessor

Interface

8

×10/100

Media

Access

Control

Micro

Interface

Global

Registers

JTAG

Memory

Port

Controller

Memory

Port

Controller

JTAG

SDRAM

SSRAM

EXACT

Ring

Interface

EXACT Bus

Output Port

EXACT Bus

Input Port

EXACT Bus

Reference Clock

System Clock

Receive

Control

Address

Resolution

Logic

Transmit

Control

SmartPath

CPU

Ingress

DMA Unit

Ingress

Queue

Manager

Egress

Queue

Manager

BLOCK DIAGRAM