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參數(shù)資料
| 型號： | CN8332EXF |
| 英文描述： | PCM Transceiver |
| 中文描述： | 收發(fā)器的PCM |
| 文件頁數(shù)： | 13/48頁 |
| 文件大?。?/td> | 434K |
| 代理商： | CN8332EXF |
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CN8331/CN8332/CN8333
1.0 Pin Description
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
1.1 Pin Assignments
100604B
Conexant
1-5
Table 1-1. CN8331/CN8332/CN8333 Pin Definitions
(1 of 6)
Pin #
Signal Name
Description
I/O/P
Notes
CN8331
CN8332
CN8333
Coaxial Line Pins
14
6
6
RLINEP/
RLINE1P
Line 1 positive receive
data
I
Differential inputs for each channel from its
respective receive coax line. The RX expects
balanced differential inputs, usually
achieved using a 1:1 transformer.
The inputs are internally DC biased to 1.9V.
15
7
7
RLINEN/
RLINE1N
Line 1 negative receive
data
I
—
22
14
RLINE2P
Line 2 positive receive
data
I
—
23
15
RLINE2N
Line 2 negative receive
data
I
—
—
22
RLINE3P
Line 3 positive receive
data
I
—
—
23
RLINE3N
Line 3 negative receive
data
I
10
2
2
TLINEP/
TLINE1P
Line 1 positive transmit
data
O
Differential, coax-driver balanced outputs
for pulse-shaped AMI B3ZS/HDB3 encoded
waveforms for each channel.
These pins should be connected to the
primary side of the 1:1 transformer through
two backmatch resistors (see
Appendix B
).
11
3
3
TLINEN/
TLINE1N
Line 1 negative transmit
data
O
—
18
10
TLINE2P
Line 2 positive transmit
data
O
—
19
11
TLINE2N
Line 2 negative transmit
O
—
—
18
TLINE3P
Line 3 positive transmit
data
O
—
—
19
TLINE3N
Line 3 negative transmit
data
O
Digital Data Pins
54
68
68
RPOS/
RPOS1/
RNRZ/
RNRZ1
RX1 AMI + data/ NRZ
data output
O
Resynchronized receive data intended to be
strobed out by the corresponding RCLK.
When ENDECDIS = 1, these outputs are
positive and negative AMI data (RPOS and
RNEG).
When ENDECDIS = 0, these outputs are
decoded NRZ data (RNRZ) and line code
violation (RLCV). A line code violation is
indicated when RLCV =1.
See notes on the ENDECDIS pin, next page.
55
69
69
RNEG/
RNEG1/
RLCV/ RLCV1
RX1 AMI
–
data/line
code violation
O
—
33
54
RPOS2/
RNRZ2
RX2 AMI + data/ NRZ
data output
O
—
32
55
RNEG2/
RLCV2
RX2 AMI
–
data/line
code violation
O
—
—
33
RPOS3/
RNRZ3
RX3 AMI + data/ NRZ
data output
O
—
—
32
RNEG3/
RLCV3
RX3 AMI
–
data/line
code violation
O
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