CX28332 Conexant Systems, CX28332 Datasheet - Page 24

• Manufacturer Part Number: CX28332
• Description: (CX28331 - CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
• Manufacturer: Conexant Systems

1.0 Pin Description
1.1 Pin Assignments
Table 1-2. CX2833i-3x Pin Definitions (1 of 8)
1-14
CX28331-3x CX28332-3x CX28333-3x
17
—
18
—
—
—
—
—
12
—
13
—
—
—
—
—
Pin #
—
—
27
28
—
—
—
—
22
23
—
—
7
8
2
3
—
—
17
18
27
28
—
—
12
13
22
23
7
8
2
3
Signal Name
RLINE1M
RLINE2M
RLINE3M
TLINE1M
TLINE2M
TLINE3M
RLINE1P
RLINE2P
RLINE3P
TLINE1P
TLINE2P
TLINE3P
RLINEM
RLINEP
TLINEM
TLINEP
Coaxial Line Pins
Conexant
Ch1 positive
receive data
Ch1 negative
receive data
Ch2 positive
receive data
Ch2 negative
receive data
Ch3 positive
receive data
Ch3 negative
receive data
Ch1 positive
transmit data
Ch1 negative
transmit data
Ch2 positive
transmit data
Ch2 negative
transmit data
Ch3 positive
transmit data
Ch3 negative
transmit data
Description
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
I/O/P
O
O
O
O
O
O
I
I
I
I
I
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 1.9 V.
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
CX28331/CX28332/CX28333
Notes
Appendix
100985A
B).