XRT79L71 datasheet(38/434 Pages) EXAR

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XRT79L71

1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION

REV. 1.0.0

Transmit ATM Cell/PPP

Processor Block

Interrupt Status

R/O

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 await-

ing service.

1 - At least one Receive ATM Cell/PPP Processor block interrupt

is awaiting service.

Operation Interrupt Enable Register - Byte 1 (Address = 0x0116)

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

Unused

DS3/E3

LIU/JA Block

Interrupt

Enable

DS3/E3

Framer

Block Inter-

rupt Enable

Unused

R/O

R/W

R/O

BIT NUMBER

NAME

TYPE

DESCRIPTION

7 - 4

Unused

DS3/E3 LIU/JA

Block Interrupt Enable

R/W

DS3/E3 LIU/Jitter Attenuator 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, the user 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.

DS3/E3 Framer Block

Interrupt Enable

R/W

DS3/E3 Framer Block Interrupt Enable:

This READ/WRITE bit permits the user to either enable or dis-

able the DS3/E3 Framer Block for interrupt generation. If the

user writes a "0" to this register bit and disables the DS3/E3

Framer Block (for interrupt generation), then all DS3/E3 Framer

Block interrupts will be disabled for interrupt generation. If the

user writes a "1" to this register bit, the user will still need to

enable the individual DS3/E3 Framer Block interrupt(s) at the

Source Level in order to enable that particular interrupt.

0 - Disable all DS3/E3 Framer Block interrupts within the device.

1 - Enables the DS3/E3 Framer Block at the Block-Level.

1 - 0

Unused

BIT NUMBER

NAME

TYPE

DESCRIPTION

XRT79L71 Datasheet(PDF) 38 Page - Exar Corporation

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