XRT84L38 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT84L38' PDF : 453 Pages View PDF
XRT84L38
OCTAL T1/E1/J1 FRAMER
BIT NUMBER
BIT NAME
1
CRC-4 Source Select
0
Framing Bit Source
REV. 1.0.1
BIT TYPE
BIT DESCRIPTION
R/W 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.
R/W 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.
Transmit Signaling And Data Link Select Register (TSDLSR)- T1 Mode (Indirect Address = 0xn0H,
0x0AH)
BIT 7
BIT 6
BIT 5
BIT 4
BIT3
BIT 2
BIT 1
BIT 0
Reserved
Reserved
Transmit
Data Link
Bandwidth
Select Bit 1
Transmit
Data Link
Bandwidth
Select Bit 0
D/E Timeslot D/E Timeslot
Source
Source
Select Bit 1 Select Bit 0
Data Link
Source
Select Bit 1
Data Link
Source
Select Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
BIT NUMBER
BIT NAME
7-6
Reserved
BIT TYPE
R/W
BIT DESCRIPTION
80
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