XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 100

• 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
Transmit Signaling And Data Link Select Register (TSDLSR)- T1 Mode
0x0AH)
B
B
Reserved
IT
IT
B
N
R/W
N
7-6
IT
UMBER
1
0
0
UMBER
7
CRC-4 Source Select
Framing Bit Source
Reserved
Reserved
B
R/W
IT
0
6
B
B
IT
IT
N
N
AME
AME
Select Bit 1
Bandwidth
Data Link
Transmit
B
R/W
IT
0
5
B
B
IT
IT
R/W
R/W
R/W
Select Bit 0
Bandwidth
Data Link
Transmit
T
T
YPE
YPE
B
R/W
IT
0
4
CRC-4 Source Select:
This READ/WRITE bit-field permits the user to determine where
the CRC-4 bits should be inserted.
When this bit is set to 0:
The CRC-4 bits are generated and inserted by the framer inter-
nally.
When this bit is set to 1:
If the framer is operating in normal 2.048Mbit/s mode, the CRC-4
bits are generated by external equipment and passed through
from the Transmit Serial Data Input Interface block via the
TxSer_n pin.
Framing Bit Source:
This READ/WRITE bit-field permits the user to determine where
the framing alignment bits should be inserted.
When this bit is set to 0:
The framing alignment bits are generated and inserted by the
framer internally.
When this bit is set to 1:
If the framer is operating in normal 2.048Mbit/s mode, the fram-
ing alignment bits are passed through from the Transmit Serial
Data Input Interface block via the TxSer_n pin.
80
D/E Timeslot
Select Bit 1
Source
B
R/W
IT
0
3
D/E Timeslot
Select Bit 0
Source
B
B
B
R/W
IT
IT
IT
0
D
D
2
ESCRIPTION
ESCRIPTION
(Indirect Address = 0xn0H,
Select Bit 1
Data Link
Source
B
R/W
IT
0
1
Select Bit 0
Data Link
Source
REV. 1.0.1
B
R/W
IT
0
0