PM73121ꢀAAL1gator II
Data Sheet
PMC-Sierra, Inc.
PMC-980620
,VVXHꢀꢁ
AAL1 SAR Processor
SYS_CLK
HOLDOFF
Tq
Figure 76. Microprocessor Output Delay Timing
Symbol
Parameter
Holdoff time
Clock-to-output delay
Signals
Min
Max
Unit
Thoff
Tq
HOLDOFF
HOLDOFF
20
2
20
16
SYS_CLK periods
ns
6.6 Interrupt Timing
The PROC_INT goes high when an OAM cell has been received and the OAM_INT_MASK bit
in CMDREG is cleared. PROC_INT goes inactive when the CLR_RX_OAM_LATCH bit is set
in CMDREG or the mask bit is set. See Figure 77 for interrupt timing.
SYS_CLK
/PROC_CS
/PROC_WR
Tq
Tmsk
Tclr
PROC_INTR
Figure 77. Interrupt Timing
Symbol
Parameter
Signals
Min
Max
Unit
Tq
Clock-to-output delay
Clear intr due to mask
SYS_CLK, PROC_INTR
PROC_CS, PROC_INTR
2
1
17
1
ns
Tmsk
SYS_CLK
cycles
Tclr
Clear intr due to clear latch bit
PROC_CS, PROC_INTR
2
2
SYS_CLK
cycles
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PMC [ PMC-SIERRA, INC ]
