Analog Devices Advantiv ADV7611 Hardware User's Manual page 123

Hardware User Guide
As shown in Figure 47, the ADV7611 CP can output the following three primary and one secondary synchronization signals, which are
controlled by the output control block in the CP block.
Primary:
•
Horizontal synchronization timing reference output on the HS pin
•
Vertical synchronization timing reference output on the VS/FIELD/ALSB pin
•
DE (indicates active region) shared with the FIELD pin
Secondary:
•
Field timing reference output on the DE pin or as a secondary signal on the VS/FIELD/ALSB pin
Timing reference signals with shared pins are controlled via I
Table 47. CP Synchronization Signal Output Pins
Pin Name Primary Signal (Default)
DE DE out
VS/FIELD/ALSB VS out
The user can program the primary and secondary synchronization signals, repositioning them in order to control the display area, as
shown in Figure 48.
2
C.
Secondary Signal
FIELD out
FIELD out
VERTICAL BLANKING
DISPLAYED AREA
(ODD FIELD)
VERTICAL BLANKING
DISPLAYED AREA
(EVEN FIELD)
VERTICAL BLANKING
DISPLAYED AREA
(ODD FIELD)
Figure 48. Synchronization Repositioning and Displayed Area
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Controlled by I
F_OUT_SEL
VS_OUT_SEL
START_HS [9:0]
DE_H_START [9:0]
HSYNC/DE SIGNAL
UG-180
2
C Bit