m28333-3x Mindspeed Technologies, m28333-3x Datasheet - Page 32
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
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2.0 Functional Description
2.2 Transmitter
2.2.4 Alarm Indication Signal (AIS) Generator
Figure 2-7. AIS Signal
2-8
8333_009
(output voltage)
(output voltage)
NEGATIVE
POSITIVE
TLINEN
TLINEP
PULSE
PULSE
When TAIS is asserted, an AIS replaces the transmit data at TPOS and TNEG.
The E3 type of AIS signal (all 1s) is supported. In three-level signal form, this is a
continuously alternating positive and negative pulse stream, as if the transmit data
were a continuous string of logical 1s.
replace single symbols within a data stream. When the encoder is disabled
(ENDECDIS = 1), the TAIS mode maintains the proper phase, based upon the
polarity of the last 1 received.
remote loopback operation.
The TAIS pin has the same data latency as the TX data pins and can be used to
The AIS overwrites data during local loopback operation, it does not affect
Mindspeed Technologies
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
Figure 2-7
™
M28331/M28332/M28333 (–3x)
illustrates the AIS signal.
28333-DSH-003-A
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