Rev. 1.0, 02/00, page 767 of 1141
Bit 2
HHK Forcibly Turned On (HHKON): Forcibly operates the half Hsync killer (HHK)
function when the H complement and mask counter interpolates complementary pulses three
successive times. When the HVTHR is set within the range from 2.35
µ
s to 4.7
µ
s to remove
equalizing pulses by using the digital H separation counter, the HHK function prevents Hsync-
Vsync phase-difference errors during the V blanking period. For the timing, refer to section
27.2.4, Horizontal Sync Signal Threshold Register (HVTHR).
Bit 2
HHKON
Description
0
The HHK is not operated when complementary pulses are interpolated three
successive times
(Initial value)
1
The HHK is forcibly operated when complementary pulses are interpolated three
successive times
Bit 1
Reserved: Cannot be modified and is always read as 0. When 1 is written to this bit,
correct operation is not guaranteed.
Bit 0
Field Detection Flag (FLD): Indicates the field status determined by the status of the field
detection window signal generated by the AFC when the external Vsync signal (AFCV signal)
rises. This flag is invalid when the internally generated Hsync signal is selected as the AFC
reference Hsync signal. For the timing, refer to section 27.2.6, Field Detection Window Register
(FWIDR).
Bit 0
FLD
Description
0
Even field
(Initial value)
1
Odd field