XRT86VL34 datasheet(94/156 Pages) EXAR

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XRT86VL34

QUAD T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION

REV. V1.2.0

SLIP

Slip Buffer Block Interrupt Status

This bit indicates whether or not the Slip Buffer block has any out-

standing interrupt request awaiting service.

0 = Indicates no outstanding Slip Buffer Block interrupt request is

awaiting service

1 = Indicates Slip Buffer block has an interrupt request awaiting ser-

vice. Interrupt Service routine should branch to the interrupt source

and read the Slip Buffer Interrupt Status register (address 0xnB08)

to clear the interrupt

NOTE:

This bit will be reset to 0 after the microprocessor has

performed a read to the Slip Buffer Interrupt Status

ALARM

Alarm & Error Block Interrupt Status

This bit indicates whether or not the Alarm & Error Block has any

outstanding interrupt request awaiting service.

0 = Indicates no outstanding interrupt request is awaiting service

1 = Indicates the Alarm & Error Block has an interrupt request await-

ing service. Interrupt service routine should branch to the interrupt

source and read the corresponding alarm and error status registers

(address 0xnB02, 0xnB0E, 0xnB40) to clear the interrupt.

NOTE:

This bit will be reset to 0 after the microprocessor has

performed a read to the corresponding Alarm & Error

Interrupt Status register that generated the interrupt.

T1 FRAME

T1 Framer Block Interrupt Status

This bit indicates whether or not the T1 Framer block has any out-

standing interrupt request awaiting service.

0 = Indicates no outstanding interrupt request is awaiting service.

1 = Indicates the T1 Framer Block has an interrupt request awaiting

service. Interrupt service routine should branch to the interrupt

source and read the T1 Framer status register (address 0xnB04) to

clear the interrupt

NOTE:

This bit will be reset to 0 after the microprocessor has

performed a read to the T1 Framer Interrupt Status register.

TABLE 78: BLOCK INTERRUPT STATUS REGISTER (BISR)

HEX ADDRESS: 0XnB00

BIT

FUNCTION

TYPE

DEFAULT

DESCRIPTION-OPERATION

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