PM3386-BI Просмотр технического описания (PDF) - PMC-Sierra

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PM3386-BI

DUAL GIGABIT ETHERNET CONTROLLER

PMC-Sierra 

RELEASED

DATASHEET

PMC-1991129

ISSUE 7

2.3 Gigabit Ethernet MAC

PM3386

DUAL GIGABIT ETHERNET CONTROLLER

• Verifies frame integrity (i.e. FCS and length checks).

• Erred frames can be filtered or passed to higher layer device.

• Automatic Base page Auto-Negotiation, extended Auto-Negotiation (Next Page)

supported via host.

• Egress Ethernet physical frame encapsulation (pad to min size, add preamble, IFG

and CRC generation).

• Supports Ethernet 2.0, IEEE 802.3 LLC and IEEE 802.3 SNAP/LLC encoding

formats and VLAN tagged frames.

• Provides 8 unicast exact-match address filters to filter frames based on DA or SA

with optional VID.

• Each address filter can be programmed to indicate whether to accept or discard

based on a match.

• Provides a 64 group multicast address filter.

• Supports 64 byte minimum size frames and jumbo frames up to 9.6K bytes.

• Programmable Inter-packet gap (IPG).

• System side loopback through GMAC for diagnostic capability.

2.4 Flow Control

• Supports IEEE 802.3-1998 flow control at each Ethernet port if enabled.

• Programmable watermarks for full/empty FIFO thresholds.

• Automatic generation of PAUSE frames based on FIFO fill levels.

• Upper layer device can flow control Ethernet ports using side-band or host signaling

to cause generation of a PAUSE frame.

• Provides side-band Paused state indication to upstream devices.

• Loss-less flow control on all valid frames up to 9.6k bytes.

2.5 Statistics

• 40 bit counters are used to ensure rollover compliance with IEEE 802.3–1998.

• Minimum 58 minutes before rollover.

• Provides port statistic counters needed to support the standard 802.3-1998, SNMP,

and RMON Management Information Base (MIB) implementations.

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

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