XRT74L73 Datasheet, PDF (65/488 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
3
Transmit UTOPIA
POS-PHY Interface
Block Interrupt Status
2-1
0
Unused
Transmit ATM Cell/PPP
Processor Block
Interrupt Status
TYPE
R/O
R/O
DESCRIPTION
Transmit UTOPIA/POS-PHY Interface Block Interrupt Status:
This READ-ONLY bit-field indicates whether or not a "Transmit
UTOPIA/POS-PHY Interface" block interrupt is awaiting service.
0 - No "Transmit UTOPIA/POS-PHY Interface" block interrupt is
awaiting service.
1 - At least one "Transmit UTOPIA/POS-PHY Interface" block
interrupt is awaiting service.
Receive ATM Cell/PPP Processor Block Interrupt Status:
This READ-ONLY bit-field indicates whether or not a "Receive
ATM Cell/PPP Processor Block" Interrupt is awaiting service.
0 - No "Receive ATM Cell/PPP Processor block" interrupt is
awaiting service.
1 - At least one "Receive ATM Cell/PPP Processor" block inter-
rupt is awaiting service.
OPERATION INTERRUPT ENABLE REGISTER - BYTE 1 (ADDRESS = 0X0116)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
Unused
DS3/E3
LIU/JA Block
Interrupt
Enable
DS3/E3
Framer Block
Interrupt
Enable
R/O
R/O
R/O
R/O
R/W
R/W
0
0
0
0
0
0
BIT 1
BIT 0
Unused
R/O
R/O
0
0
BIT NUMBER
NAME
7-4
Unused
3
DS3/E3 LIU/JA
Block Interrupt Enable
TYPE
DESCRIPTION
R/W DS3/E3 LIU/JA Block Interrupt Enable:
This READ/WRITE bit permit the user to either enable or disable
the DS3/E3 LIU/JA Block for interrupt generation. If the user
writes a "0" to this register bit and disables the "DS3/E3 LIU/JA
Block" (for interrupt generation), then all "DS3/E3 LIU/JA Block"
interrupts will be disabled for interrupt generation. If the user
writes a "1" to this register bit, he/she will still need to enable the
individual "DS3/E3 LIU/JA Block" interrupt(s) at the "Source
Level" in order to enable that particular interrupt.
0 - Disable all "DS3/E3 LIU/JA Block" interrupts within the
device.
1 - Enables the "DS3/E3 LIU/JA Block" at the "Block-Level".
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