參數(shù)資料
型號: IP-ED8B10B
元件分類: 通信、網(wǎng)絡(luò)模塊及開發(fā)工具
英文描述: Telecomm/Datacomm
中文描述: 電信/數(shù)據(jù)通信
文件頁數(shù): 2/11頁
文件大小: 502K
代理商: IP-ED8B10B
2
Altera Corporation
8b10b Encoder/Decoder MegaCore Function (ED8B10B) Data Sheet
Figure 1. 8b10b Conversion
In bit serial transmission, the LSB is usually transmitted first, while the
MSB is usually transmitted last.
Character
Codes
In addition to 256 data characters, the 8b/10b code defines twelve out-of-
band indicators, also called special control characters. The 256 data
characters are named D
x.y
, and the special control characters are named
K
x.y
. The
x
value corresponds to the five-bit group, and the
y
value to the
three-bit group.
The special control characters indicate, for example, whether the data is
idle, test data, or data delimiters. In applications where encoded
characters are transmitted bit-serially, the comma character (K28.5) is
usually used for alignment purposes as its 10-bit code is guaranteed not to
occur elsewhere in the encoded bit stream, except after K28.7 which is
normally only sent during diagnostic.
9
8
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
H
G
F
E
D
C
B
A
a
b
c
d
e
i
f
g
h
j
Conversion
8b10b
LSB sent first
MSB sent last
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