XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. 1.0.1
TABLE 87: RECEIVE
S
UBSTITUTION
S
IGNALING
REGISTER (RSSR) T1 MODE
R
EGISTER 252-283 - T1
RECEIVE
S
UBSTITUTION
S
IGNALING
R
EGISTER (RSSR 0-23)
HEX ADDRESS: 0X03C0 TO 0X03DF
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7-4 Reserved
-
-
Reserved
3
2
1
0
SIG16-A, 4-A, 2-A
R/W
R/W
R/W
R/W
0
0
0
0
16-code signaling A 4-code signaling A 2-code signaling A
16-code signaling B 4-code signaling B 2-code signaling A
16-code signaling C 4-code signaling A 2-code signaling A
16-code signaling D 4-code signaling B 2-code signaling A
SIG16-B, 4-B, 2-A
SIG16-C, 4-A, 2-A
SIG16-D, 4-B, 2-A
TABLE 88: RECEIVE
SIGNALING
A
RRAY
REGISTER 0 TO 31
R
EGISTER 284-315
R
ECEIVE
SIGNALING
A
RRAY
R
EGISTER (RSAR 0-31)
H
EX
ADDRESS: 0X0500 TO 0X051F
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7-4 Reserved
-
-
Reserved
3
2
1
0
A
B
C
D
R/W
R/W
R/W
R/W
0
0
0
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.
T
ABLE 89: LAPD BUFFER 0 CONTROL
R
EGISTER
EX ADDRESS: 0X0600 TO 0X0660
R
EGISTER 316-411
LAPD BUFFER 0 CONTROL
R
EGISTER (LAPDBCR0)
H
B
IT
FUNCTION
TYPE
D
EFAULT
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.
87
EXAR [ EXAR CORPORATION ]
