28348-DSH-001-B
Mindspeed Technologies™
1
-11
CX28342/3/4/6/8 Data Sheet
Product Description
Table 1-5. Receiver Section Line Side (1 of 2)
Pin Label
CX28342 Pin # CX28343 Pin #
CX28344 Pin #
Signal Name
I/O
Definition
LINECK1
2
2
2
Framers 1
Receive Line
Clock In
I
Line clock input should be
connected to a 44.736 MHz
source in DS3 mode or to a
34.368 MHz source in E3
mode, derived from incoming
receive data.
LINECK2
12
12
12
Framers 2
Receive Line
Clock In
I
LINECK3
—
21
21
Framers 3
Receive Line
Clock In
I
LINECK4
——
29
Framers 4
Receive Line
Clock In
I
RXPOS1/
RXNRZ1
3
3
3
Framers 1
Receive
Positive/NRZ
Input
IPD
In rail mode and in AMI mode,
it is the positive data input. In
unipolar mode it is the NRZ
data input. Sampled on the
rising/falling (programmable)
edge of the receiver input
clock (LINECK).
RXPOS2/
RXNRZ2
14
14
14
Framers 2
Receive
Positive/NRZ
Input
IPD
RXPOS3/
RXNRZ3
—
23
23
Framers 3
Receive
Positive/NRZ
Input
IPD
RXPOS4/
RXNRZ4
——
31
Framers 4
Receive
Positive/NRZ
Input
IPD
RXNEG1/
LCVI1
4
4
4
Framers 1
Receive
Negative/Line
Code Violation
Input
IPD
In rail mode and in AMI mode,
it is the negative data input. In
unipolar mode, it is the line
code violation input for LCV
counting (if unused tie low).
Sampled on the rising/falling
(programmable) edge of the
receiver input clock (LINECK).
RXNEG2/
LCVI2
13
13
13
Framers 2
Receive
Negative/Line
Code Violation
Input
IPD
RXNEG3/
LCVI3
—
22
22
Framers 3
Receive
Negative/Line
Code Violation
Input
IPD
RXNEG4/
LCVI4
——
30
Framers 4
Receive
Negative/Line
Code Violation
Input
IPD
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