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XRT79L71 Datasheet(PDF) 85 Page - Exar Corporation

Part # XRT79L71
Description  1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC -
PDF  434 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT79L71 Datasheet(HTML) 85 Page - Exar Corporation

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XRT79L71
76
REV. 1.0.0
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
Receive DS3 Status Register (Address = 0x1111)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
FERF/RDI
Defect
Declared
RxAIC
RxFEBE[2:0]
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
0
0
0
BIT NUMBER
NAME
TYPE
DESCRIPTION
7 - 5
Unused
R/O
4
FERF/RDI Defect
Declared
R/O
FERF/RDI (Far-End Receive Failure/Remote Defect Indica-
tor) Defect Declared Indicator:
This READ-ONLY bit-field indicates whether or not the Receive
DS3/E3 Framer block is currently declaring the FERF/RDI defect
condition, as described below.
0 - The Receive DS3/E3 Framer block is NOT currently declaring
the FERF/RDI defect condition.
1 - The Receive DS3/E3 Framer block is currently declaring the
FERF/RDI defect condition.
NOTE: This bit-field is only active if the XRT79L71 has been
configured to operate in the DS3 Mode.
3
RxAIC
R/O
Receive AIC State:
This READ-ONLY bit-field indicates the current state of the AIC
bit-field within the incoming DS3 data-stream.
0 - Indicates that the Receive DS3/E3 Framer block has received
at least 2 consecutive M-frames that have the AIC bit-field set to
"0".
1 - Indicates that the Receive DS3/E3 Framer block has received
at least 63 consecutive M-frames that have the AIC bit-field set
to "1".
NOTE: This bit-field is only active if the XRT79L71 has been
configured to operate in the DS3 Mode.
2 - 0
RxFEBE[2:0]
R/O
Receive FEBE (Far-End Block Error) Value:
These READ-ONLY bit-fields reflect the FEBE value within the
most recently received DS3 frame. RxFEBE[2:0] = [1, 1, 1] indi-
cates a normal condition. All other values for RxFEBE[2:0] indi-
cates an erred condition at the remote terminal equipment.
NOTE: These bit-fields are only active if the XRT79L71 has been
configured to operate in the DS3, C-bit Parity Framing
format.



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