82P2281PFG IDT, Integrated Device Technology Inc, 82P2281PFG Datasheet - Page 175

• Manufacturer Part Number: 82P2281PFG
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82P2281PFG

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Package Type: TQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

T1/J1 XIBC Control (074H)
IBCDEN:
IBCDUNFM:
and the F-bit is not changed.
loopback code.
CL[1:0]:
J1-075H).
T1/J1 XIBC Code (075H)
IBC[7:0]:
(b1~0, T1/J1-074H). The IBC[7] is the MSB.
Programming Information
IDT82P2281
Bit Name
Bit Name
Default
Default
Bit No.
Bit No.
Type
Type
= 0: Disable transmitting the inband loopback code.
= 1: Enable transmitting the inband loopback code.
= 0: The inband loopback code is transmitted in framed mode, that is, the bits in all 24 channels are overwritten with the inband loopback code
= 1: The inband loopback code is transmitted in unframed mode, that is, all the bits in 24 channels and the F-bit are overwritten with the inband
These 2 bits define the length of the inband loopback code to be transmitted, meanwhile, they define the valid code in the IBC[7:0] bits (b7~0, T1/
The IBC[7:X] bits define the content of the inband loopback code. The ‘X’ is one of 0 to 3 which depends on the length defined by the CL[1:0] bits
IBC7
R/W
7
7
0
CL[1:0]
IBC6
0 0
0 1
1 0
1 1
R/W
6
6
0
Reserved
IBC5
R/W
5
5
0
Loopback Code Length & Valid Code In The IBC[7:0]
5-bit length & the code in the IBC[7:3] is valid
6-bit length & the code in the IBC[7:2] is valid
7-bit length & the code in the IBC[7:1] is valid
8-bit length & the code in the IBC[7:0] is valid
IBC4
R/W
4
4
0
175
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
IBCDEN
IBC3
R/W
R/W
3
0
3
0
IBCDUNFM
IBC2
R/W
R/W
2
0
2
0
IBC1
R/W
R/W
CL1
1
0
1
0
August 20, 2009
IBC0
CL0
R/W
R/W
0
0
0
0