IDT82P2288 Integrated Device Technology, Inc., IDT82P2288 Datasheet - Page 258

• Manufacturer Part Number: IDT82P2288
• Description: 8 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2288
E1 Maintenance Function Control 1 (02CH, 12CH, 22CH, 32CH, 42CH, 52CH, 62CH, 72CH)
LAC:
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
16 consecutive zeros in 32 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, E1-029H,...)) for 32 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 16 consecutive zeros in 32 consecutive bit periods.
secutive 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 16 consecutive zeros in 32 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, E1-029H,...)) for 2048 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 16 consecutive zeros in 32 consecutive bit periods.
RAISE:
ATAO:
Programming Information
Bit Name
Default
Bit No.
Type
This bit selects the LOS criteria.
= 0: The G.775 is selected. In short haul application, the LOS is declared when the incoming signal level is less than 800 mVpp for 32 consecu-
= 1: The I.431/ETSI is selected. In short haul application, the LOS is declared when the incoming signal level is less than 800 mVpp for 2048 con-
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
247
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
3
LAC
R/W
2
0
RAISE
R/W
1
0
March 22, 2004
ATAO
R/W
0
0