IDT82P2282 Integrated Device Technology, Inc., IDT82P2282 Datasheet - Page 141
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IDT82P2282
Manufacturer Part Number
IDT82P2282
Description
2 Channel T1/J1/E1 Transceiver
Manufacturer
Integrated Device Technology, Inc.
Datasheet
1.IDT82P2282.pdf
(383 pages)
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IDT82P2282
T1/J1 Maintenance Function Control 1 (02CH, 12CH)
LAC:
utive bit intervals and is cleared when the incoming signal level is greater than 1 Vpp and has an average mark density of at least 12.5% and less than
100 consecutive zeros in 128 consecutive bit periods. In long haul application, the LOS is declared when the incoming signal level is less than Q dB
below nominal (set in the LOS[4:0] bits (b4~0, T1/J1-029H,...)) for 175 consecutive bit intervals and is cleared when the incoming signal level is
greater than (Q + 4 dB) and has an average mark density of at least 12.5% and less than 100 consecutive zeros in 128 consecutive bit periods.
tive bit intervals and is cleared when the incoming signal level is greater than 1 Vpp and has an average mark density of at least 12.5% and less than
100 consecutive zeros in 128 consecutive bit periods. In long haul application, the LOS is declared when the incoming signal level is less than Q dB
below nominal (set in the LOS[4:0] bits (b4~0, T1/J1-029H,...)) for 1544 consecutive bit intervals and is cleared when the incoming signal level is
greater than (Q + 4 dB) and has an average mark density of at least 12.5% and less than 100 consecutive zeros in 128 consecutive bit periods.
RAISE:
ATAO:
Programming Information
Bit Name
Default
Bit No.
Type
This bit selects the LOS criterion.
= 0: The T1.231 is selected. In short haul application, the LOS is declared when the incoming signal level is less than 800 mVpp for 175 consec-
= 1: The I.431 is selected. In short haul application, the LOS is declared when the incoming signal level is less than 800 mVpp for 1544 consecu-
This bit determines whether all ’One’s can be inserted in the receive path when the LOS is detected.
= 0: Disable the insertion.
= 1: Enable the insertion.
This bit determines whether all ’One’s can be inserted in the transmit path when the LOS is detected in the receive path.
= 0: Disable the insertion.
= 1: Enable the insertion.
7
6
Reserved
5
4
130
DUAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
3
LAC
R/W
2
0
RAISE
R/W
1
0
October 7, 2003
ATAO
R/W
0
0
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