XRT73L06 Datasheet, PDF (50/63 Pages) Exar Corporation – SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT

XRT73L06
REV. 1.0.2
SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
FIGURE 37. INTERRUPT PROCESS
ERROR CONDITION
OCCURS
Interrupt enable
NO
bits at 0x60 and
0xn1 set?
YES
Interrupt status bits
at
0x61 and 0xn2 set.
Interrupt Generated
INT pin goes "Low"
Interrupt Service
Routine
reads the status
register at 0x61
Interrupt Service
Routine
reads the status
register at 0xn2
Interrupt is being
serviced.
YES
NO
Interrupt Pending ?
INT pin goes "High"
Normal Operation
47