m28333-3x Mindspeed Technologies, m28333-3x Datasheet - Page 28
m28333-3x
Manufacturer Part Number
m28333-3x
Description
Single/dual/triple E3/ds3/sts-1 Line Interface Unit
Manufacturer
Mindspeed Technologies
Datasheet
1.M28333-3X.pdf
(71 pages)
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2.0 Functional Description
2.2 Transmitter
2.2.3 Line Driver
Figure 2-3. Pulse Measurement Points
2-4
2.2.3.1 Transmit Pulse
TX
Mask Templates
RX
Pulse/Power Template for E3
0–450 ft COAX
(type 734/728)
0–450 ft COAX
waveform and reduce its high-frequency energy content. This ensures that the
transmit pulse template is met at the cross-connect block, which follows 0–450
feet of transmit-side coaxial cable.
The differential line driver takes the filtered transmit waveform, increases it to the
proper level, and drives it into the transmit magnetics. The two external discrete
back-matching resistors (31.6 ) aid in line matching. The driver is presented
with an approximately 150
gain loss in the back-matching resistors.
various data rates.
(type 734/728)
The Transmit Pulse Mask characteristics of the M2833i device are designed so
that the transmitted output meets the Pulse Shape mask specified in ITU-T
Recommendation G.703.
For DS3/STS-1 rates, a pulse-shaper block is used to shape the transmit
Figure 2-3
Mindspeed Technologies
Pulse/Power Template for DS3/STS-1
illustrates the Pulse/Power template measurement points for the
DSX
DSX
differential load. Driver gain accounts for the 6 dB
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
0–450 ft COAX
(type 734/728)
™
0–450 ft COAX
(type 734/728)
M28331/M28332/M28333 (–3x)
28333-DSH-003-A
RX
TX
100604_013
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