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XRT86L30
87
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. 1.0.1
TABLE 87: RECEIVE SUBSTITUTION SIGNALING REGISTER (RSSR) T1 MODE
REGISTER 252-283 - T1
RECEIVE SUBSTITUTION SIGNALING REGISTER (RSSR 0-23)
HEX ADDRESS: 0X03C0 TO 0X03DF
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-4
Reserved
-
Reserved
3
SIG16-A, 4-A, 2-A
R/W
0
16-code signaling A 4-code signaling A 2-code signaling A
2
SIG16-B, 4-B, 2-A
R/W
0
16-code signaling B 4-code signaling B 2-code signaling A
1
SIG16-C, 4-A, 2-A
R/W
0
16-code signaling C 4-code signaling A 2-code signaling A
0
SIG16-D, 4-B, 2-A
R/W
0
16-code signaling D 4-code signaling B 2-code signaling A
TABLE 88: RECEIVE SIGNALING ARRAY REGISTER 0 TO 31
REGISTER 284-315
RECEIVE SIGNALING ARRAY REGISTER (RSAR 0-31)
HEX ADDRESS: 0X0500 TO 0X051F
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-4
Reserved
-
Reserved
3
A
R/W
0
Reflects the most recently received signaling value (A,B,C,D) asso-
ciated with timeslot 0 to 31.
NOTE:
The content of this register only has meaning when the
framer is using Channel Associated Signaling.
2
B
R/W
0
1
C
R/W
0
D
R/W
0
TABLE 89: LAPD BUFFER 0 CONTROL REGISTER
REGISTER 316-411
LAPD BUFFER 0 CONTROL REGISTER (LAPDBCR0)
HEX ADDRESS: 0X0600 TO 0X0660
BIT
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-0
LAPD Buffer 0
R/W
0
LAPD Buffer 0 (96-Bytes)
This register is used to transmit and receive LAPD messages within
buffer 0 of the HDLC controller chosen in the LAPD Select Register
(0x011B). When writing to buffer 0, the message is inserted into the
outgoing LAPD frame and the data cannot be retrieved. After
detecting the Rx end of transfer interrupt (RxEOT), the extracted
LAPD message is available to be read.
NOTE:
When writing or reading from Buffer 0, the register is
automatically incremented such that 0x0600 can be written
to or read from continuously.