cx28331 Mindspeed Technologies, cx28331 Datasheet - Page 15

• Manufacturer Part Number: cx28331
• Description: Single/dual/triple E3/ds3/sts-1line Interface Unit
• Manufacturer: Mindspeed Technologies

CX28331/CX28332/CX28333 (-1x)
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Table 1-1. CX2833i-1x Pin Definitions (1 of 7)
28333-DSH-001-A
CX28331-1x CX28332-1x CX28333-1x
14
—
15
—
—
—
—
—
10
—
11
—
—
—
—
—
Pin #
—
—
22
23
—
—
—
—
18
19
—
—
6
7
2
3
—
—
14
15
22
23
—
—
10
11
18
19
6
7
2
3
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Signal Name
RLINE1P
RLINE1N
RLINE2P
RLINE2N
RLINE3P
RLINE3N
TLINE1N
TLINE2N
TLINE3N
TLINE1P
TLINE2P
TLINE3P
RLINEN
RLINEP
TLINEN
TLINEP
Coaxial Line Pins
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
™
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, refer to
Figure 3-1.
1.0 Pin Description
Notes
1.1 Pin Assignments
1-5