Rev. 1.0, 02/00, page 769 of 1141
Bit 5
Reference Hsync Signal Select (HSEL): Selects the reference Hsync signal for the AFC:
the external Hsync signal or the internally generated Hsync signal. When using the data slicer,
select the external Hsync signal. When not using the data slicer but using the text display mode for
the OSD, select the internally generated Hsync signal. Before this bit setting is modified, the OSD
display should be turned off.
Bit 5
HSEL
Description
0
The external Hsync signal is selected
(Initial value)
1
The internally generated Hsync signal is selected
Bit 4
Blank Bit: Cannot be read or modified.
Bit 3
Reserved: Cannot be modified and is always read as 0. When 1 is written to this bit,
correct operation is not guaranteed.
Bit 2
AFC Reset Control (ARST): Enables or disables the AFC reset function. When a VCR
motor skew occurs or the channel is switched, and if the Hsync signal (AFCH signal) output from
the AFC differs in phase from the reference Hsync signal input to the AFC, the AFC is reset to
eliminate the phase difference and to lock the AFCH signal phase to that of the reference signal.
Bit 2
ARST
Description
0
The reset function is disabled
(Initial value)
1
The reset function is enabled
Bits 1 and 0
Reserved: Cannot be modified and are always read as 0. When 1 is written to these
bits, correct operation is not guaranteed.