參數(shù)資料
型號: 84302
廠商: LSI Corporation
英文描述: 4-Port Fast Ethernet Controller( 4端口快速以太網(wǎng)控制器)
中文描述: 4端口快速以太網(wǎng)控制器(4端口快速以太網(wǎng)控制器)
文件頁數(shù): 48/96頁
文件大?。?/td> 826K
代理商: 84302
84302 4-Port
Fast Ethernet Controller
4-48
MD400171/C
Table 21. FIFO Threshold Register Definition
7
6
5
4
3
2
1
0
RXTHR3
RXTHR2
RXTHR1
RXTHR0
TXTHR3
TXTHR2
TXTHR1
TXTHR0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit
Symbol
Name
Definition
R/W
Def.
7
6
5
4
RXTHR3
RXTHR2
RXTHR1
RXTHR0
RX FIFO
Threshold
Settings
These bits set the threshold in the RX FIFO which
cause RXRDY to be asserted when the amount of
data in the RX FIFO is greater than or equal to the
threshold below:
R/W
0
0
0
0
1111 = 30 Double Words of Data in RX FIFO
1110 = 28 . . .
1101 = 26 . . .
1100 = 24 . . .
1011 = 22 . . .
1010 = 20 . . .
1001 = 18 . . .
1000 = 16 . . .
0111 = 14 . . .
0110 = 12 . . .
0101 = 10 . . .
0100 = 8 . . .
0011 = 6 . . .
0010 = 4 . . .
0001 = 2 . . .
0000 = 1 . . .
3
2
1
0
TXTHR3
TXTHR2
TXTHR1
TXTHR0
TX FIFO
Threshold
Settings
These bits set the threshold in the TX FIFO which
cause TXRDY to be asserted when the amount of
space in the TX FIFO is greater than or equal to the
threshold below:
R/W
0
0
0
0
1111 = 30 Double Words of Space in TX FIFO
1110 = 28 . . .
1101 = 26 . . .
1100 = 24 . . .
1011 = 22 . . .
1010 = 20 . . .
1001 = 18 . . .
1000 = 16 . . .
0111 = 14 . . .
0110 = 12 . . .
0101 = 10 . . .
0100 = 8 . . .
0011 = 6 . . .
0010 = 4 . . .
0001 = 2 . . .
0000 = 1 . . .
Bit 0 Occurs On CDST0/CDST8 Pin
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