Figure 147: Suggested Method Of Handling Afe_Interrupt - Analog Devices ADV7850 Hardware Manual

Rev. A May 2012
Interrupt on TRIX
Read TRIX_READBACK[1:0]
to determine current status of
TRIX input and perform
appropriate action
All tri-level input status readbacks checked
Clear AFE_INTERRUPT_ST in IO map
Check AFE_INTERRUPT_RAW in IO map

Figure 147: Suggested Method of Handling afe_interrupt

START
(AFE_INTERRUPT received)
Set variable "X" = 1
Read TRIX_INT_STATUS[1:0]
TRIX_INT_STATUS[1:0]
N
=0b00 ?
Y
No interrupt on TRIX
Increment variable "X"
X = 9 ?
N
Y
AFE_INTERRUPT_RAW
N
=0b0 ?
Y
END
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ADV7850