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XRT79L71IB Datasheet(PDF) 83 Page - Exar Corporation

Part # XRT79L71IB
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

XRT79L71IB Datasheet(HTML) 83 Page - Exar Corporation

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XRT79L71
74
REV. 1.0.0
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
RECEIVE DS3 RELATED REGISTERS
4
Unused
R/O
3
HDLC Loop-back
R/W
2 - 0
Unused
R/O
Receive DS3 Configuration and Status Register (Address = 0x1110)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
AIS Defect
Condition
Declared
LOS Defect
Condition
Declared
DS3 Idle
Condition
Declared
OOF Defect
Condition
Declared
Unused
Framing with
Valid P-Bits
F-Sync
Algo
M-Sync
Algo
R/O
R/O
R/O
R/O
R/O
R/W
R/W
R/W
0
0
0
1
0
1
0
0
BIT NUMBER
NAME
TYPE
DESCRIPTION
7
AIS Defect Condition
Declared
R/O
AIS Defect Condition Declared Indicator:
This READ-ONLY bit-field indicates whether or not the Receive
DS3/E3 Framer block is currently declaring the AIS defect condi-
tion within the incoming DS3 data-stream, as described below.
0 - The Receive DS3/E3 Framer block is NOT currently declaring
the AIS defect condition.
1 - The Receive DS3/E3 Framer block is currently declaring the
AIS defect condition.
6
LOS Defect Condition
Declared
R/O
LOS Defect Condition Declared Indicator:
This READ-ONLY bit-field indicates whether or not the Receive
Section of the XRT79L71 (e.g., either the Receive DS3/E3 LIU
or the Receive DS3/E3 Framer block) is currently detecting the
LOS defect condition, as described below.
0 - Indicates that the Receive Section of the XRT79L71 is NOT
currently declaring the LOS defect condition.
1 - Indicates that the Receive Section of the XRT79L71 is cur-
rently declaring the LOS defect condition.
5
DS3 Idle Condition
Declared
R/O
DS3 Idle Condition Declared Indicator:
This READ-ONLY bit-field indicates whether or not the Receive
DS3/E3 Framer block is currently detecting the DS3 Idle pattern,
in its incoming path, as described below.
0 - Indicates that the Receive DS3/E3 Framer block is NOT cur-
rently declaring the DS3 Idle Condition.
1 - Indicates that the Receive DS3/E3 Framer block is currently
declaring the DS3 Idle Condition.
NOTE: This bit-field is only active if the XRT79L71 has been
configured to operate in the DS3 Mode.
BIT NUMBER
NAME
TYPE
DESCRIPTION



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