CX28331 datasheet(25/68 Pages) CONEXANT

25 / 68 page

CX28331/CX28332/CX28333

1.0 Pin Description

Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit

1.1 Pin Assignments

100985A

Conexant

1-15

Digital Data Pins

——

RPOS/

RNRZ

Ch1 receive

Positive rail or

NRZ data

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 in the

Control Signals section.

—

RPOS1/

RNRZ1

——

RNEG/

RLCV

Ch1 receive

Negative rail or

line code

violation

—

RNEG1/

RLCV1

—

RPOS2/

RNRZ2

Ch2 receive

Positive rail or

NRZ data

—

RNEG2/

RLCV2

Ch2 receive

Negative rail or

line code

violation

——

RPOS3/

RNRZ3

Ch3 receive

Positive rail or

NRZ data

——

RNEG3/

RLCV3

Ch3 receive

Negative rail or

line code

violation

——

RCLK

Receive clock

Ch1

Recovered clock for each channel receiver,

intended for strobing the corresponding

RDAT into the following framer or logic.

—

RCLK1

—

RCLK2

Receive clock

Ch2

——

RCLK3

Receive clock

Ch3

Table 1-2. CX2833i-3x Pin Definitions (2 of 8)

Pin #

Signal Name

Description

I/O/P

Notes

CX28331-3x CX28332-3x CX28333-3x

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