82P2282PF IDT, Integrated Device Technology Inc, 82P2282PF Datasheet - Page 31
82P2282PF
Manufacturer Part Number
82P2282PF
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.82P2282PF.pdf
(381 pages)
Specifications of 82P2282PF
Screening Level
Industrial
Pin Count
100
Mounting
Surface Mount
Package Type
TQFP
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Lead Free Status / RoHS Status
Not Compliant
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IDT82P2282
3.7.3
sity of the received signal. When the received signal is below an ampli-
tude for continuous intervals, the LOS is detected. When the received
signal is above the amplitude and the density of marks meets the
requirement, the LOS is cleared.
Table 9 and Table 10. In T1/J1 mode, the LOS detection supports ANSI
T1.231 and I.431. In E1 mode, the LOS detection supports ITU-T G.775
and I.431. The criteria are selected by the LAC bit.
Functional Description
The Loss of Signal (LOS) Detector monitors the amplitude and den-
The different criteria for LOS Declaring/Clearing are illustrated in
LOS DETECTION
RRINGn
RTIPn
clock
RRINGn
RTIPn
clock
1
RRINGn
RTIPn
clock
1
2
Figure 10. HDB3 Code Violation & Excessive Zero Error
2
3
1
Excessive zero
4 consecutive
zeros
2
Figure 9. B8ZS Excessive Zero Error
Figure 8. AMI Bipolar Violation Error
3
4
3
4
5
4
5
31
Bipolar violation
Excessive zero
8 consecutive
Selected by the LOS_IES bit, a transition from '0' to '1' on the LOS_S bit
or any transition (from ‘0’ to ‘1’ or from ‘1’ to ‘0’) on the LOS_S bit will set
the LOS_IS bit to ‘1’. When the LOS_IS bit is ‘1’, an interrupt will be
reported by the INT pin if enabled by the LOS_IE bit.
to the received data stream.
V
DUAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
zeros
When the LOS is detected, it will be indicated by the LOS_S bit.
During LOS, if the RAISE bit is set to ‘1’, all ’One’s will be inserted
Code violation
V
6
V
5
6
7
6
7
8
9
August 20, 2009
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