參數(shù)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(wǎng)的遠(yuǎn)程監(jiān)控控制器/ SNMP管理處的技術(shù)手冊,4月2日
文件頁數(shù): 82/128頁
文件大小: 997K
代理商: L84302
82 of 128
April, 2002
L84302 Quad 4-Port Ethernet Controller - Technical Manual
Copyright 1997-2002 by LSI Logic Corporation. All rights reserved.
Bit 0 occurs on CDST0/CDST8 pin
Table 27
Transmit Control/Product ID Register Definition
7
6
5
4
3
2
1
0
ID3
R/W
ID2
R/W
ID1
R/W
ID0
R/W
TXCTRL3
R/W
TXCTRL2
R/W
TXCTRL1
R/W
TXCTRL0
R/W
Bit
Symbol
Name
Definition
R/W
Def.
7
6
5
4
ID3
ID2
ID1
ID0
Product ID
This register contains a revision identification number
that is unique for each device revision.
R/W
3
2
1
0
TXCTRL3
TXCTRL2
TXCTRL1
TXCTRL0
Transmit
Control
Threshold
These bits determine the transmit control threshold.
When the data in the TX FIFO exceeds this thresh-
old, data is sent to the MAC for transmission out of
the device.
1111 = Transmit starts when 30 double word in FIFO
1110 = Transmit starts when 28 double word in FIFO
1101 = Transmit starts when 26 double word in FIFO
1100 = Transmit starts when 24 double word in FIFO
1011 = Transmit starts when 22 double word in FIFO
1010 = Transmit starts when 20 double word in FIFO
1001 = Transmit starts when 18 double word in FIFO
1000 = Transmit starts when 16 double word in FIFO
0111 = Transmit starts when 14 double word in FIFO
0110 = Transmit starts when 12 double word in FIFO
0101 = Transmit starts when 10 double word in FIFO
0100 = Transmit starts when 8 double word in FIFO
0011 = Transmit starts when 6 double word in FIFO
0010 = Transmit starts when 4 double word in FIFO
0001 = Transmit starts when 2 double word in FIFO
0000 = Transmit starts when 1 double word in FIFO
R/W
0
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