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參數資料
型號: L84302
元件分類: 通用總線功能
英文描述: L84302 Quad 100/10 Mbps 4-Port Ethernet Controller with RMON/SNMP Management Counters technical manual 4/02
中文描述: L84302四100/10 Mbps的4端口以太網的遠程監控控制器/ SNMP管理處的技術手冊,4月2日
文件頁數: 77/128頁
文件大小: 997K
代理商: L84302
Functional Description
Copyright 1997-2002 by LSI Logic Corporation. All rights reserved.
77 of 128
April, 2002
Bit 0 occurs on CDST0/CDST8 pin
Table 22
Configuration 1 Register Definition
7
6
5
4
3
2
1
0
INT_RXDIS
R/W
RXCRC
R/W
FDX
R/W
TXCRC_DIS
R/W
ROWNT
R/W
TXPRE_DIS
R/W
AUTOPAD
R/W
GRPADR
R/W
Bit
Symbol
Name
Definition
R/W
Def.
7
INT_RXDIS
Receive Inter-
rupt Disable
1 = Receive Interrupts disabled, i.e. no inter-
rupts are produced by a port’s receiver
0 = Enabled
R/W
0
6
RXCRC
Receive CRC
Enable
1 = CRC is not stripped off of receive packet
and is loaded into RX FIFO along with data
0 = CRC stripped off
R/W
0
5
FDX
Full Duplex
Enable
1 = Full Duplex
0 = Half Duplex
Full Duplex mode is enabled if either this bit
is set to 1 or FDUPLX pin is low, as shown
in
Table 10
.
R/W
0
4
TXCRC_DIS
Transmit CRC
Disable
1 = CRC not appended to end of transmit
packet
0 = CRC appended
CRC is disabled if either this bit is set to 1 or
if the TXNOCRC pin is low, as shown in
Table 4
.
R/W
0
3
ROWNT
Receive Own
Transmit Ignore
Select
1 = Ignore any packet received while a
packet is being transmitted
0 = Do not ignore
R/W
0
2
TXPRE_DIS
Transmit Pream-
ble Disable
1 = Preamble not added to beginning of TX
packet
0 = Preamble added
R/W
0
1
AUTOPAD
AutoPad Enable
1 = All undersize Xmt packets padded to 64
bytes
0 = No padding
R/W
0
0
GRPADR
Group Address
Mode Enable
1 = Group address mode enabled, i.e. ignore
last 4 bits of receive destination address
(DA) when comparing Unicast DA to station
address
0 = Disabled
R/W
0
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