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CX28331 Datasheet(PDF) 29 Page - Synaptics Incorporated.

Part # CX28331
Description  Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
PDF  68 Pages
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Manufacturer  CONEXANT [Synaptics Incorporated.]
Direct Link  https://www.synaptics.com/
Logo CONEXANT - Synaptics Incorporated.

CX28331 Datasheet(HTML) 29 Page - Synaptics Incorporated.

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CX28331/CX28332/CX28333
1.0 Pin Description
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
1.1 Pin Assignments
100985A
Conexant
1-19
10
——
TVSS
TX ground Ch1
P
Ground pins for transmit circuitry per
channel.
—
100
100
TVSS1
—
20
10
TVSS2
TX ground Ch2
P
——
20
TVSS3
TX ground Ch3
P
16
——
RVDD
RX power Ch1
P
Power pins for receive circuitry per channel
(3.3 V).
Connect to 3.3 V power.
—
6
6
RVDD1
—
26
16
RVDD2
RX power Ch2
P
——
26
RVDD3
RX power Ch3
P
19
——
RVSS
RX ground Ch1
P
Ground pins for receive circuitry per
channel.
Connect to ground.
—
9
9
RVSS1
—
29
19
RVSS2
RX ground Ch2
P
——
29
RVSS3
RX ground Ch3
P
75
75
75
DVDDC
Digital core
power
P
Digital core power for all channels (3.3 V).
51
51
51
DVSSC
Digital core
ground
P
Digital core ground for all channels.
98
98
98
VGG
5 V/3.3 V ESD
pin (1)
P
5 V supply for 5 V-tolerant, digital pad ESD
diodes. No static power is drawn from pin.
92
92
92
DVDDIO
Digital I/O power
P
Connect to 3.3 V digital power.
33
33
33
DVSSIO
Digital ground
P
Digital ground.
5, 6, 25, 26
15, 16
—
VDD
Power
P
Connect to 3.3 V power.
9, 20, 29,
100
10, 19
—
VSS
Ground
P
Connect to ground.
Miscellaneous
73
——
PD
Power down for
Ch1
I
Power down transceiver channel
0 = Power down channel (off)
1 = Channel active (on)
Note: A special power-down mode exists
when all three PDBs are set low. This
special mode shuts off the entire chip
(including biasing). This is useful for static
Idd testing.
—
95
95
PD1
—
30
73
PD2
Power down for
Ch2
I
——
30
PD3
Power down for
Ch3
I
Table 1-2. CX2833i-3x Pin Definitions (6 of 8)
Pin #
Signal Name
Description
I/O/P
Notes
CX28331-3x CX28332-3x CX28333-3x



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