參數(shù)資料
型號(hào): CDB8952
廠商: Cirrus Logic, Inc.
英文描述: CrystalLAN 100BASE-X and 10BASE-T Transceiver
中文描述: CrystalLAN個(gè)100Base - X和10Base - T的收發(fā)器
文件頁數(shù): 22/82頁
文件大?。?/td> 1130K
代理商: CDB8952
CS8952
22
CrystalLAN 100BASE-X and 10BASE-T Transceiver
Table 2. 4B5B Symbol Encoding/Decoding
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10100
10101
01010
01011
01110
01111
10010
10011
10110
10111
11010
11011
11100
11101
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
CONTROL (Note
2
)
I
J
K
T
R
1.
2.
11111
11000
10001
01101
00111
0101
0101
0101
0000
0000
IDLE (Note
3
)
First Start of Stream Symbol
Second Start of Stream Symbol
First End of Stream Symbol
Second End of Stream Symbol
DATA code groups are indicated by RX_DV = 1
CONTROL code groups are inserted automatically during transmission in response to
TX_EN. They are not generated through any combination of TXD[3:0] or TX_ER.
IDLE is indicated by RX_DV = 0.
3.
Code Violations (RX_ER = 1 or TX_ER = 1)
Name
5-bit Symbol
Normal Mode 4-bit
Nibble
Error Report
Mode 4-bit
Nibble
Comments
CONTROL (Note
1
)
I
J
K
T
R
CODE VIOLATIONS
H
V0
V1
V2
V3
V4
V5
11111
11000
10001
01101
00111
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
This portion of the table relates received
5-bit symbols to received 4-bit nibbles
only. The control code groups may not
be transmitted in the data portion of the
frame.
00100
00000
00001
00010
00011
00101
00110
0000
0000
0001
0111
1000
1001
1010
1011
0110 or 0101 (Note
2
)
0110 or 0101 (Note
2
)
0110 or 0101 (Note
2
)
0110 or 0101 (Note
2
)
0110 or 0101 (Note
2
)
0110 or 0101 (Note
2
)
DATA and CONTROL Codes (RX_ER = 0 or TX_ER = 0)
5-bit Symbol
4-bit Nibble
Name
Comments
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