XRT79L71 Datasheet, PDF (251/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

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PRELIMINARY
1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
LAPD CONTROLLER BYTE COUNT REGISTERS
TXLAPD BYTE COUNT REGISTER (DIRECT ADDRESS = 0X1183)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
TxLAPD_MESSAGE_SIZE[7:0]
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
BIT 2
R/W
0
XRT79L71
REV. P1.0.3
BIT 1
R/W
0
BIT 0
R/W
0
BIT NUMBER
NAME
7-0
TxLAPD_MESSAGE_
SIZE[7:0]
TYPE
R/W
DESCRIPTION
Transmit LAPD Message Size:
These READ/WRITE bit-fields permit the user to specify the size
of the information payload (in terms of bytes) within the very next
outbound LAPD/PMDL Message, whenever Bit 7 (TxLAPD Any)
within the "Transmit Tx LAPD Configuration" Register has been
set to "1".
RXLAPD BYTE COUNT REGISTER (DIRECT ADDRESS = 0X1184)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
RxLAPD_MESSAGE_SIZE[7:0]
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
BIT 2
R/O
0
BIT 1
R/O
0
BIT 0
R/O
0
BIT NUMBER
NAME
7-0
RxLAPD_MESSAGE_
SIZE[7:0]
TYPE
R/O
DESCRIPTION
Receive LAPD Message Size:
These READ-ONLY bit-fields indicate the size of the most
recently received LAPD/PMDL Message, whenever Bit 7
(RxLAPD Any) within the "Rx LAPD Control" Register; has been
set to "1".The contents of these register bits, reflects the
Received LAPD Message size, in terms of bytes.
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