HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 362

• Manufacturer Part Number: HD6432160
• Description: Hitachi 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

13.4.9
Using the signals generated/selected with timer connection, it is possible to generate a waveform
based on the composite synchronization signal (blanking waveform).
One kind of blanking waveform is generated by combining HFBACKI and VFBACKI inputs,
with the phase polarity made positive by means of bits HFINV and VFINV in TCONRI, with the
IVO signal.
The logic of CBLANK output waveform generation is shown in figure 13.9.
Rev. 2.0, 08/02, page 322 of 788
Mode
Separate
mode
HFBACKI input (positive)
VFBACKI input (positive)
IVO signal (positive)
CBLANK Output
IVI Signal
VSYNCI
input
Figure 13.9 CBLANK Output Waveform Generation
IVO Signal
IVI signal (without fall
modification or IHI
synchronization)
IVI signal (without fall
modification, with IHI
synchronization)
IVI signal (with fall
modification, without IHI
synchronization)
IVI signal (with fall
modification and IHI
synchronization)
IVG signal
Falling edge sensing
Rising edge sensing
Meaning of IVO Signal
VSYNCI input (vertical synchronization signal)
is output directly
Meaningless unless VSYNCI input (vertical
synchronization signal) is synchronized with
HSYNCI input (horizontal synchronization
signal)
VSYNCI input (vertical synchronization signal)
fall is modified before output
VSYNCI input (vertical synchronization signal)
fall is modified and signal is synchronized with
HSYNCI input (horizontal synchronization
signal) before output
Internal synchronization signal is output
Reset
Set
Q
CBLANK signal
(positive)