XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 112

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT84L38
OCTAL T1/E1/J1 FRAMER
Receive Data Link Select Register (RDLSR) - E1 Mode(Indirect Address = 0xn0H, 0x0CH)
Receive Sa8
B
B
Data Link
IT
IT
Select
B
N
R/W
N
1-0
IT
UMBER
0
UMBER
7
7
Receive Sa8
Data Link Source Select
Receive Sa8 Data Link
Select
Data Link
Select
B
R/W
IT
0
6
B
B
IT
IT
N
N
AME
AME
Receive Sa8
Data Link
Select
B
R/W
IT
0
5
B
B
IT
Receive Sa8
IT
R/W
R/W
Data Link
T
T
Select
YPE
YPE
B
R/W
IT
0
4
Data Link Source Select:
These READ/WRITE bit-fields permit the user to select data
destination of the Facility Data Link bits.
The user can extract Facility Data Link bits of the incoming data
to the LAPD controller or SLCâ96 buffer. Both LAPD controller
and SLCâ96 buffer can be read through microprocessor access.
The user can also direct received Facility Data Link bits to
Receive Serial Data via RxSer_n pins. Overhead interface of the
framer can also be used to output Facility Data Link bits. Finally,
the user can force these data link bits to one.
When these bits are set to 00:
The Facility Data Link bits of the incoming data stream are
extracted to either the LAPD controller or the SLCâ96 buffer. The
Facility Data Link bits are also extracted into the Receive Serial
Data via the RxSer pin.
When these bits are set to 01:
The Facility Data Link bits of the incoming data stream are sent
to the Receive Serial Data output only.
When these bits are set to 10:
The Facility Data Link bits of the incoming data stream are
directed to the Overhead Interface via the RxOH_n pins. The
Facility Data Link bits are also extracted into the Receive Serial
Data via the RxSer pin.
When these bits are set to 11:
The Facility Data Link bits of the incoming data stream are
forced to one by the framer and are outputted to the Receive
Serial Data output.
Receive Sa8 Data Link Select:
This READ/WRITE bit-field permit the user to select data desti-
nation of the Sa8 National bit.
When this bit is set to 0:
Destination of the Sa8 National bit is not the data link interface.
When this bit is set to 1:
Destination of the Sa8 National bit is the data link interface.
92
Receive Sa8
Data Link
Select
B
R/W
IT
0
3
Receive Signaling and Data Link Select Bits
B
B
B
R/W
IT
IT
IT
0
D
D
2
ESCRIPTION
ESCRIPTION
B
[2:0]
R/W
IT
0
1
REV. 1.0.1
B
R/W
IT
0
0