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TC9208M-DS-R05 Datasheet

  • TC9208M-DS-R05

  • 8-Port 10/100/1000 Smart Ethernet Switch

  • 1807.98KB

  • 53頁

  • ETC

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TC9208M
Preliminary Data Sheet
8-Port 10/100/1000 Smart Ethernet Switch
Features
Stand Alone Switch On A Chip
8 Ethernet 10/100/1000 ports
MII/GMII interface for all ports
Trunk group support
Four Classes of Service (CoS) selectable for
each port and/or checked via IP Header and
802.1Q VLAN Tag
Eight port-based VLANs
Maximum throughput, non head-of-line
blocking architecture
Embedded SSRAM packet buffer/address table
8K MAC address table
Each port is configurable to 10 full/half duplex,
100 full/half duplex and 1000 full duplex mode
Flow-control ability is able to set for both full
and half duplex mode
Broadcast throttling
Port Mirroring
Serial EEPROM Interface, EEPROM is optional
MDIO master for PHY configuration / polling
0.18 micron technology
2V and 3.3V dual voltage power supply
Packaged in PBGA 292
27 MHz crystal input only
This feature allows improved
multimedia applications.
support
for
The chip embeds IEEE 802.3 MAC functions for
each port and these functions support full and half
duplex modes for both 10 and 100 Mbits/s data
rates and full duplex for 1000 Mbit/s. Each port
includes dedicated receive and transmit FIFOs
with necessary logic to implement flow control for
both full and half duplex modes. TC9208M uses
IEEE 802.3x frame based flow control for full
duplex and backpressure for half duplex.
TC9208M handles an 8K address-lookup table
with searching, self-learning, and automatic aging,
at very high speed and excellent address space
coverage. Forwarding rules are implemented
according to IEEE 802.1D specifications. Filtering
capabilities for bad packets and packets with
Reserved Group Address DA are also provided.
Increased interconnection bandwidth can be
achieved by using TC9208M鈥檚 trunking
capabilities. Several load-balancing schemes are
provided through pin and EEPROM configuration.
A port mirror feature, which it includes bad frames
optionally, can be used for debugging network
problems.
The pin configuration interface comprises 40
configurations, which are shared with GMII output
pins by latching the configuration data during
reset. An external EEPROM device can also be
used to configure the TC9208M at power-up. With
reference to pin configuration interface, the
EEPROM extends the chip鈥檚 configuration
capability with new features and enables a
jumper-less configuration mode using a parallel
interface for reprogramming. A virtual internal
EEPROM mode is also provided to enable the
use of the programming interface in the absence
of external EEPROM. TC9208M can make
effective use by most of its features using only the
pin configuration interface.
TC9208M includes a physical layer configuration /
polling entity, which it is use to configure the phy
functions and to monitor the physical layer
transceiver鈥檚 speed, duplex mode, link status and
full duplex flow control ability for each port. The
chip provides four modes for phy configurations,
1/53
August 1, 2003
TC9208M-DS-R06
General Description
TC9208M is a fully integrated 8 port 10/100/1000
smart Ethernet switch controller designed for low
cost and high performance solutions. The chip
embeds necessary SSRAM for packet buffering
and MAC address table. It provides MII / GMII
interface for all ports.
A store-and-forward switching method using a
non-blocking architecture is implemented within
TC9208M to improve the availability and
bandwidth. The chip embeds packet buffer, which
it supports normal and priority queues for each
transmission port.
TC9208M provides evolved CoS with four levels
of priority. The priority can be checked via layer 2
(802.1Q VLAN Tagging) and/or layer 3 (IP Header
TOS bits) packets. Port based priority is also
provided to ensure transmission with precedence
for all packets incoming from selected port(s).
Confidential.
Copyright 漏 2003, IC Plus Corp.

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