XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 448

• 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
configuration of the Receive Signaling and Data Link Control [2:0] bits of the Receive Signaling and Data Link
Select Register (RSDLSR).
RECEIVE SIGNALING AND DATA LINK SELECT REGISTER (RSDLSR) (INDIRECT ADDRESS = 0XN0H,
0X0CH)
If the Receive Signaling and Data Link Select [2:0] bits of the Receive Signaling and Data Link Select Register
are set to 000 or 001, the data link interface becomes destination of the Sa4 through Sa8 National bits.
The Receive Sa Data Link Select bits of the Receive Signaling and Data Link Select Register (RSDLSR)
determine which ones of the National bits are configured as Data Link bits in E1 framing format mode.
Depending upon the configuration of the Receive Signaling and Data Link Select Register, either of the
following cases may exists:
•
•
The table below shows configuration of the Receive Sa Data Link Select bits of the Receive Signaling and Data
Link Select Register (RSDLSR).
RECEIVE SIGNALING AND DATA LINK SELECT REGISTER (RSDLSR) (INDIRECT ADDRESS = 0XN0H,
0X0CH)
14.2.3
In E1 mode, Timeslot 16 octet can be configured to receive the following:
•
•
N
N
None of the National bits are used to transport the Data Link information bits (That is, data link channel of
XRT84L38 is inactive).
Any combination of between 1 and all 5 of the National bits can be selected to transport the Data Link
information bits.
Channel Associated Signaling (CAS) bits A, B, C and D
Common Channel Signaling (CCS) bits
UMBER
UMBER
B
2-0
B
7
6
5
4
3
IT
IT
How to configure XRT84L38 to receive data link information through Timeslot 16 octet
Receive Signaling
Receive Sa8 Data
Receive Sa7 Data
Receive Sa6 Data
Receive Sa5 Data
Receive Sa4 Data
and Data Link
Link Select
Link Select
Link Select
Link Select
Link Select
B
B
IT
Select
IT
N
N
AME
AME
B
B
IT
IT
R/W
R/W
R/W
R/W
R/W
R/W
T
T
YPE
YPE
000 - The data link interface is destination of the Sa4 through Sa8 Nation
bits.
001 - The data link interface is destination of the Sa4 through Sa8 Nation
bits.
010 - The Sa4 through Sa8 Nation bits are forced to 1.
011 - The Sa4 through Sa8 Nation bits are forced to 1.
1xx - The Sa4 through Sa8 Nation bits are forced to 1.
0 - Destination of the Sa8 Nation bit is not the data link interface.
1 - Destination of the Sa8 National bit is the data link interface.
0 - Destination of the Sa7 Nation bit is not the data link interface.
1 - Destination of the Sa7 National bit is the data link interface.
0 - Destination of the Sa6 Nation bit is not the data link interface.
1 - Destination of the Sa6 National bit is the data link interface.
0 - Destination of the Sa5 Nation bit is not the data link interface.
1 - Destination of the Sa5 National bit is the data link interface.
0 - Destination of the Sa4 Nation bit is not the data link interface.
1 - Destination of the Sa4 National bit is the data link interface.
428
B
B
IT
IT
D
D
ESCRIPTION
ESCRIPTION
REV. 1.0.1