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CS8952 数据表(PDF) 22 Page - Cirrus Logic

部件名 CS8952
功能描述  CrystalLAN 100BASE-X and 10BASE-T Transceiver
PDF  82 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

CS8952 数据表(HTML) 22 Page - Cirrus Logic

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CS8952
22
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver
Table 2. 4B5B Symbol Encoding/Decoding
2
10100
0010
3
10101
0011
4
01010
0100
5
01011
0101
6
01110
0110
7
01111
0111
8
10010
1000
9
10011
1001
A
10110
1010
B
10111
1011
C
11010
1100
D
11011
1101
E
11100
1110
F
11101
1111
CONTROL (Note 2)
I
11111
0101
IDLE (Note 3)
J
11000
0101
First Start of Stream Symbol
K
10001
0101
Second Start of Stream Symbol
T
01101
0000
First End of Stream Symbol
R
00111
0000
Second End of Stream Symbol
1. DATA code groups are indicated by RX_DV = 1
2. 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.
3. IDLE is indicated by RX_DV = 0.
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
11111
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.
J
11000
0000
0000
K
10001
0000
0000
T
01101
0000
0000
R
00111
0000
0000
CODE VIOLATIONS
H
00100
0000
0000
V0
00000
0110 or 0101 (Note 2)
0001
V1
00001
0110 or 0101 (Note 2)
0111
V2
00010
0110 or 0101 (Note 2)
1000
V3
00011
0110 or 0101 (Note 2)
1001
V4
00101
0110 or 0101 (Note 2)
1010
V5
00110
0110 or 0101 (Note 2)1011
DATA and CONTROL Codes (RX_ER = 0 or TX_ER = 0)
Name
5-bit Symbol
4-bit Nibble
Comments



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