CX28332 Conexant Systems, CX28332 Datasheet - Page 17

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

CX28331/CX28332/CX28333
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Table 1-1. CX2833i-1x Pin Definitions (3 of 6)
100985A
CX28331-1x CX28332-1x CX28333-1x
50
—
—
—
52
—
—
—
59
51
—
—
—
Pin #
—
62
39
—
—
66
35
—
59
—
61
40
—
—
62
50
39
—
66
52
35
59
—
61
51
40
Signal Name
ENDECDIS
RLOS1
RLOS2
RLOS3
TCLK1
TCLK2
TCLK3
RLOS
TAIS1
TAIS2
TAIS3
TCLK
TAIS
Control Signals
Conexant
Transmit clock Ch1
Transmit clock Ch2
Transmit clock Ch3
Loss of signal Ch1
Loss of signal Ch2
Loss of signal Ch3
Encoder/decoder
disable (for all channels)
Transmit Ch1 AIS mode
enable
Transmit Ch2 AIS mode
enable
Transmit Ch3 AIS mode
enable
Description
I/O/P
O
O
O
I
I
I
I
I
I
I
Transmit bit clock input for strobing
with transmit data into the CX2833i.
Loss Of Signal (LOS) indication for
each channel, as determined by
insufficient pulse density. Signal
loss detected when RLOS = 1. An
LOS will be asserted when 175 ±75
0s occur in a row and deasserted
when the pulse density is between
28% and 33% (DS3/STS-1) (i.e., a
1s density).
1 = Dual rail pulse coded data
format. Input transmit data pins
TPOS, TNRZ, TNEG and NC are
interpreted as TPOS and TNEG
(encoded positive and negative rail
data). Output receive data pins
RPOS and RNRZ, and RNEG and
RLCV are interpreted as RPOS and
RNEG, with RPOS having a positive
pulse in place of every positive AMI
pulse and RNEG having a negative
pulse in place of every negative AMI
pulse.
0 = NRZ format. Transmit data pins
TPOS and TNEG are interpreted as
TNRZ and NC (not connected).
Receive data pins RPOS and RNEG
are interpreted as RNRZ and RLCV.
In this mode, all line code violations
are reported as active high on
RLCV.
Transmission of Alarm Indication
Signal (AIS) for a given channel.
Replace transmit data with AIS
signal. The AMI form of AIS
supported is alternating 1s.
Looping takes precedence over AIS.
1 = AIS mode enabled
0 = AIS mode disabled
(+1, -1, +1, -1, +1, ...)
1.0 Pin Description
Notes
1.1 Pin Assignments
1-7