CX28332 Conexant Systems, CX28332 Datasheet - Page 29

• 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 1-2. CX2833i-3x Pin Definitions (6 of 8)
100985A
CX28331-3x CX28332-3x CX28333-3x
5, 6, 25, 26
9, 20, 29,
100
10
—
—
—
16
—
—
—
19
—
—
—
75
51
98
92
33
73
—
—
—
15, 16
10, 19
Pin #
100
—
20
—
—
26
—
—
29
—
75
51
98
92
33
—
95
30
—
6
9
100
—
10
20
—
16
26
—
19
29
75
51
98
92
33
—
—
—
95
73
30
6
9
Signal Name
DVDDIO
DVSSIO
DVDDC
RVDD1
RVDD2
RVDD3
DVSSC
TVSS1
TVSS2
TVSS3
RVSS1
RVSS2
RVSS3
RVDD
RVSS
TVSS
VGG
VDD
VSS
PD1
PD2
PD3
PD
Miscellaneous
Conexant
TX ground Ch1
TX ground Ch2
TX ground Ch3
RX power Ch1
RX power Ch2
RX power Ch3
RX ground Ch1
RX ground Ch2
RX ground Ch3
Digital core
power
Digital core
ground
5 V/3.3 V ESD
pin
Digital I/O power
Digital ground
Power
Ground
Power down for
Ch1
Power down for
Ch2
Power down for
Ch3
Description
(1)
I/O/P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
I
I
I
Ground pins for transmit circuitry per
channel.
Power pins for receive circuitry per channel
(3.3 V).
Connect to 3.3 V power.
Ground pins for receive circuitry per
channel.
Connect to ground.
Digital core power for all channels (3.3 V).
Digital core ground for all channels.
5 V supply for 5 V-tolerant, digital pad ESD
diodes. No static power is drawn from pin.
Connect to 3.3 V digital power.
Digital ground.
Connect to 3.3 V power.
Connect to ground.
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.
Notes
1.0 Pin Description
1.1 Pin Assignments
1-19