XRT74L73 Datasheet, PDF (61/488 Pages) Exar Corporation – 3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER

PRELIMINARY
XRT74L73
3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER
REV. P1.0.1
BIT NUMBER
NAME
2
Interrupt Write to Clear/
RUR
1
Enable Interrupt Clear
0
Interrupt Enable
TYPE
R/W
R/W
R/W
DESCRIPTION
Interrupt - Write to Clear/RUR Select:
This READ/WRITE bit-field permits the user to configure all of
the "Source-Level" Interrupt Status bits (within the XRT74L73
device) to either be "Write to Clear" (WTC) or "Reset-upon-
Read" (RUR) bits.
0 - Configures all "Source-Level" Interrupt Status register bits to
function as "Reset-upon-Read" (RUR).
1 - Configures all "Source-Level" Interrupt Status register bits to
function as "Write-to-Clear" (WTC).
Enable Auto-Clear of Interrupts Select:
This READ/WRITE bit-field permits the user to configure the
XRT74L73 device to automatically disable all interrupts that are
activated.
0 - Configures the chip to NOT automatically disable any Inter-
rupts following their activation.
1 - Configures the chip to automatically disable all Interrupts fol-
lowing their activation.
Interrupt Enable:
This READ/WRITE bit-field permits the user to configure the
XRT74L73 device to generate interrupt requests to the Micropro-
cessor.
0 - Configures the chip to NOT generate interrupt to the Micro-
processor. All interrupts are disabled and the Microprocessor
must poll the register bits.
1 - Configures the chip to generate interrupts the Microproces-
sor.
OPERATION CONTROL - LOOP-BACK CONTROL REGISTER (ADDRESS = 0X0102)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
Unused
Loop-back Control [3:0]
R/O
R/O
R/O
R/O
R/W
R/W
R/W
0
0
0
0
0
0
0
BIT 0
R/W
0
BIT NUMBER
NAME
7-4
Unused
TYPE
R/O
DESCRIPTION
62