Analog Devices Advantiv ADV7619 Hardware User's Manual page 20

UG-237
Output Synchronization Selection
VS_OUT_SEL, IO, Address 0x06[7]
A control to select the VSync or FIELD signal to be output on the VS/FIELD/ALSB pin.
Function
VS_OUT_SEL
0
1 (default)
F_OUT_SEL, IO, Address 0x05[4]
A control to select the DE or FIELD signal to be output on the DE pin.
Function
F_OUT_SEL
0 (default)
1
Output Synchronization Signals Polarity
INV_LLC_POL, IO Map, Address 0x06, [0]
The polarity of the pixel clock provided by the ADV7619 via the LLC pin can be inverted using the INV_LLC_POL bit. Note that this
inversion affects only the LLC output pin. The other output pins are not affected by INV_LLC_POL.
Changing the polarity of the LLC clock output may be necessary in order to meet the setup and hold time expectations of the downstream
devices processing the output data of the ADV7619. It is expected that these parameters must be matched regardless of the type of video
data that is transmitted. Therefore, INV_LLC_POL is designed to be mode independent.
INV_LLC_POL, IO, Address 0x06[0]
A control to select the polarity of the LLC.
Function
INV_LLC_POL
0 (default)
1
The output synchronization signals HS, VS/FIELD/ALSB, and DE can be inverted using the following control bits:
•
INV_HS_POL
•
INV_VS_POL
•
INV_F_POL
INV_HS_POL, IO, Address 0x06[1]
A control to select the polarity of the HS signal.
Function
INV_HS_POL
0 (default)
1
INV_VS_POL, IO, Address 0x06[2]
A control to select the polarity of the VS/FIELD/ALSB signal.
Function
INV_VS_POL
0 (default)
1
Description
Selects FIELD output on VS/FIELD/ALSB pin
Selects VSync output on VS/FIELD/ALSB pin
Description
Selects DE output on DE pin
Selects FIELD output on DE pin
Description
Does not invert LLC
Inverts LLC
Description
Negative polarity HS
Positive polarity HS
Description
Negative polarity VS/FIELD/ALSB
Positive polarity VS/FIELD/ALSB
Rev. A | Page 20 of 204
Hardware User Guide