82P2281PFG IDT, Integrated Device Technology Inc, 82P2281PFG Datasheet - Page 87
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82P2281PFG
Manufacturer Part Number
82P2281PFG
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.82P2281PFG.pdf
(371 pages)
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
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Part Number:
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Manufacturer:
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Table 55: Related Bit / Register In Chapter 3.20.3
3.20.4
ESF format in T1/J1 mode.
the F-bit in the ESF format. The six ‘X’s represent the code that is pro-
grammed in the XBOC[5:0] bits. The BOM is transmitted only if the
XBOC[5:0] bits are not all ’One’s.
3.20.5
loopback code in a framed or unframed T1/J1 data stream.
grammed in the CL[1:0] bits and the IBC[7:0] bits respectively. The code
can only be transmitted when the IBCDEN bit is enabled. In framed
mode, which is configured by the IBCDUNFM bit, the bits in all 24 chan-
nels are overwritten with the inband loopback code and the F-bit is not
changed. In unframed mode, which is configured by the IBCDUNFM bit,
all the bits in 24 channels and the F-bit are overwritten with the inband
loopback code.
IDT82P2281
Table 56: Related Bit / Register In Chapter 3.20.4 & Chapter 3.20.5
IBCDUNFM
XBOC[5:0]
The Bit Oriented Message (BOM) can only be transmitted in the
The BOM pattern is ‘111111110XXXXXX0’ which occupies the DL of
The Inband Loopback Code Generator can only transmit inband
The length and the content of the inband loopback code are pro-
IBCDEN
IBC[7:0]
CL[1:0]
AUTOPRM
Bit
CRBIT
U1BIT
U2BIT
LBBIT
RBIT
Bit
BIT-ORIENTED MESSAGE TRANSMITTER (T1/J1 ONLY)
INBAND LOOPBACK CODE GENERATOR (T1/J1 ONLY)
XIBC Control
XBOC Code
XIBC Code
Register
APRM Control
Register
T1/J1 Address (Hex)
T1/J1 Address (Hex)
075
080
074
07F
87
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
3.20.6
all the data stream if the TAIS bit and the TXDIS bit are set. The all zeros
transmission takes a higher priority.
3.20.7
will lead to one-bit deletion or one-bit repetition in the data stream to be
transmitted, that is, to change the frame alignment position. The one-bit
deletion or repetition occurs randomly.
After all the above processes, all ’One’s or all ‘Zero’s will overwrite
Any transition (from ‘0’ to ‘1’ or from ‘1’ to ‘0’) on the COFAEN bit
ALL ‘ZERO’S & ALL ‘ONE’S
CHANGE OF FRAME ALIGNMENT
August 20, 2009
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