m28333-3x Mindspeed Technologies, m28333-3x Datasheet - Page 21

• Manufacturer Part Number: m28333-3x
• Description: Single/dual/triple E3/ds3/sts-1 Line Interface Unit
• Manufacturer: Mindspeed Technologies

M28331/M28332/M28333 (–3x)
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Table 1-1. M2833i-3x Pin Definitions (7 of 9)
28333-DSH-003-A
M28331-3x M28332-3x M28333-3x
5, 6, 25, 26
57
—
—
—
15
—
—
10
—
—
—
16
—
—
—
19
—
—
—
75
51
98
92
33
15, 16
Pin #
100
—
89
36
—
—
25
—
—
20
—
—
26
—
—
29
—
75
51
98
92
33
5
6
9
100
—
89
57
36
—
15
25
—
10
20
—
16
26
—
19
29
75
51
98
92
33
—
5
6
9
Signal Name
Mindspeed Technologies
DVDDIO
DVSSIO
RVDD1
RVDD2
RVDD3
DVDDC
REQH1
REQH2
REQH3
TVDD1
TVDD2
TVDD3
RVSS1
RVSS2
RVSS3
DVSSC
TVSS1
TVSS2
TVSS3
RVDD
REQH
TVDD
RVSS
TVSS
VGG
VDD
Power/Ground
Ch1 Receive
High EQ Gain
Enable
Ch2 Receive
High EQ Gain
Enable
Ch3 Receive
High EQ Gain
Enable
TX power Ch1
TX power Ch2
TX power Ch3
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
Description
(1)
I/O/P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
I
I
I
™
The equalizer in the M2833i has two gain
settings. The higher gain setting is designed
to optimally equalize a nominally-shaped
(meets the pulse template), pulse-driven
DS3 or STS-1 waveform that is driven
through 0–900 feet of cable.
Square-shaped pulses such as E3 or
DS3-HIGH require less high-frequency gain
and should use the low EQ gain setting.
REQH = 1 high EQ gain (DS3/STS-1 modes)
REQH = 0 low EQ gain (E3/DS3
Square Modes)
Power pins for transmit circuitry per
channel (3.3 V).
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.
Notes
1.0 Pin Description
1.1 Pin Assignments
1-11