FEATURES

• Single-chip, 1-port, full-duplex or half-duplex, 10/100BaseT switching device

for low-cost unmanaged and managed

networks.

• On-chip SmartPath 50 MHz RISC

CPU core, multi-channel DMA

controller, MAC-layer interface logic,

FIFOs, PCI-based expansion port, and

a flexible memory controller.

• CPU supports background applications

running on local OS (e.g., SNMP), and

real-time data-oriented applications

(e.g., packet forwarding and filtering

decisions).

• Performs packet switching at a rate of

200 Mbit/s (full-duplex) or 100 Mbit/s

(half-duplex).

• Fully compatible with the PM3350

8-port 10 Mbit/s switch device; may be

used to create a compact and

inexpensive mixed 10/100 Mbit/s

switching hub.

• Filtering and switching at wire rates (up

to 148,8000 packets per second),

supporting a mix of Ethernet and

IEEE 802.3 protocols.

• Expansion port supports a peak

system bandwidth of 1 Gbit/s, and is

compatible with industry-standard PCI

bus (version 2.1).

• Performs all address learning, address

table management, and aging

functions for up to 32,768 MAC

addresses (limited by external

memory). Address learning rate of up

to 10,000 addresses per second.

• Maximum broadcast/multicast at wire

rates with configurable broadcast

storm rate limiting.

• Low-latency operation in both unicast

and broadcast modes.

• Configuration, management, MIB

statistics, and diagnostics available inband.

• Store-and-forward operation with full

error checking and filtering.

• Flow control supported for both fullduplex and half-duplex operation;

supports IEEE 802.3x PAUSE frame

flow control in full-duplex mode, and

supports user-enabled backpressure

flow control in half-duplex mode.

• Maintains and collects per-port and

per-host statistics at wire rates.

• Interfaces directly to industry-standard

100 Mbit/s transceivers with no glue

logic via the built-in Medium

Independent Interface (MII) port with

full support for the autonegotiation

function implemented by the PHY

devices.

• Fully static CMOS operation at 50 MHz

clock rates.

• Implemented with a 3.3 V core and a

5 V-compatible I/O.

• Available in a 208-pin PQFP package.