Analog Devices ADV7850 Hardware Manual page 395

of an edge event that happened in the past. This is the definition of an edge-sensitive raw bit.
All raw bits, with the exceptions of intrq_raw and intrq2_raw, have corresponding status bits. The status bits always work in the same
manner whether the raw bit is edge or level-sensitive. Status bits have the following characteristics:
• Enabled by setting either or both of the corresponding interrupt mask bits
•
Always latched and must be cleared by the corresponding clear bit
When either of the interrupt mask bits for a given interrupt is set, if that raw bit changes state, the corresponding status bit goes high and
an interrupt is generated on the INT1 or INT2 pin, depending on which interrupt mask bit was set. The status bit must be cleared using
the appropriate clear bit. The status bits, interrupt mask bits and clear bits for avi_info and new_avi_info are described here for
completeness.
avi_info_st, IO, Address 0x61[0] (Read Only)
This readback indicates the latched status of the avi_info_raw signal. This bit is only valid if enabled via the corresponding INT1 or
INT2 interrupt mask bit. Once set, this bit remains high until the interrupt is cleared via avi_info_clr.
Function
avi_info_st
0 
1
new_avi_info_st, IO, Address 0x7A[0] (Read Only)
This readback indicates the latched status for new_avi_info_raw. This bit is only valid if enabled via the corresponding INT1 or INT2
interrupt mask bit. Once set, this bit remains high until the interrupt is cleared via new_avi_info_clr.
Function
new_avi_info_st
0 
1
avi_info_clr, IO, Address 0x62[0] (Self-Clearing)
This control is used to clear the avi_info_raw and avi_info_st bits. This is a self clearing bit.
Function
avi_info_clr
0 
1
new_avi_info_clr, IO, Address 0x7B[0] (Self-Clearing)
This control is used to clear the new_avi_info_raw and new_avi_info_st bits. This is a self clearing bit.
Function
new_avi_info_clr
0 
1
avi_info_mb1, IO, Address 0x64[0]
This control is used to set the INT1 interrupt mask for the AVI InfoFrame detection interrupt. When set, an AVI InfoFrame detection
event causes avi_info_st to be set and an interrupt generated on INT1.
Rev. A May 2012
Description
avi_info_raw not changed state
avi_info_raw changed state
Description
new_avi_info_raw not changed state
new_avi_info_raw changed state
Description
No function
Clear avi_info_raw and avi_info_st
Description
No function
Clear new_avi_info_raw and new_avi_info_st
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