DS3172 Maxim Integrated, DS3172 Datasheet - Page 115
DS3172
Manufacturer Part Number
DS3172
Description
Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
Manufacturer
Maxim Integrated
Datasheet
1.DS3171.pdf
(234 pages)
Specifications of DS3172
Part # Aliases
90-31720-000
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For E3 LOS Assertion:
The ALOS detector in the AGC/equalizer block detects that the incoming signal is less than or equal to a signal
level approximately 24dB below nominal, and mutes the data coming out of the clock and data recovery block.
(24dB below nominal in the “tolerance range” of G.775, where LOS may or may not be declared.)
For E3 LOS Clear:
The ALOS detector in the AGC/equalizer block detects that the incoming signal is greater than or equal to a signal
level approximately 18dB below nominal, and enables data to come out of the CDR block. (18dB is in the
“tolerance range” of G.775, where LOS may or may not be declared.)
10.12.5.6 Receiver Power-Down
To minimize power consumption when the receiver is not being used, write a one to the PORT.CR1.PD bit. When
the receiver is powered down, the RCLKOn pin is tri-stated. In addition, the RXPn and RXNn pins become high
impedance.
10.12.5.7 Receiver Jitter Tolerance.
The receiver exceeds the input jitter tolerance requirements of all applicable telecommunication standards in
4-1. See
Figure 10-33. Receiver Jitter Tolerance
Figure
10-33.
10
1.0
0.1
DS3 GR-499 Cat II
DS3 GR-499 Cat I
10
15
30
STS-1 GR253
E3 G.823
100
10
5
300
1.5
FREQUENCY (Hz)
669
115
1k
2.3k
10k
DS317x JITTER TOLERANCE
22.3k
60k
100k
0.3
0.15
0.1
300k
800k
1M
Table
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