Hsynco Output; Table 13.11 Hsynco Output Modes - Renesas H8S/2437 Hardware Manual

13.4.7

HSYNCO Output

With the HSYNCO output, the meaning of the signal source to be selected and use or non-use of
modification varies according to the IHI signal source and the waveform required by an external
circuitry. The HSYNCO output modes are shown in table 13.11.

Table 13.11 HSYNCO Output Modes

Mode IHI Signal
No signal HFBACKI
input
S-on-G mode CSYNCI
input
Composite HSYNCI
mode input
Separate HSYNCI
mode input
Rev. 1.00, 09/03, page 396 of 704
IHO Signal Meaning of IHO Signal
IHI signal (without HFBACKI input is output directly
2fH modification)
IHI signal (with Meaningless unless there is a double-frequency
2fH modification) part in the HFBACKI input
CL1 signal 1 interval of HFBACKI input is changed before
output
IHG signal Internal synchronization signal is output
IHI signal (without CSYNCI input (composite synchronization
2fH modification) signal) is output directly
IHI signal (with Double-frequency part of CSYNCI input
2fH modification) (composite synchronization signal) is eliminated
before output
CL1 signal Horizontal synchronization signal part of
CSYNCI input (composite synchronization
signal) is separated before output
IHG signal Internal synchronization signal is output
IHI signal (without HSYNCI input (composite synchronization
2fH modification) signal) is output directly
IHI signal (with Double-frequency part of HSYNCI input
2fH modification) (composite synchronization signal) is eliminated
before output
CL1 signal Horizontal synchronization signal part of
HSYNCI input (composite synchronization
signal) is separated before output
IHG signal Internal synchronization signal is output
IHI signal (without HSYNCI input (horizontal synchronization signal)
2fH modification) is output directly
IHI signal (with Meaningless unless there is a double-frequency
2fH modification) part in the HSYNCI input (horizontal
synchronization signal)
CL1 signal 1 interval of HSYNCI input (horizontal
synchronization signal) is changed before output
IHG signal Internal synchronization signal is output