HD64F2145 datasheet(360/829 Pages) RENESAS

360 / 829 page

Rev. 2.0, 08/02, page 320 of 788

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 external

circuitry. The HSYNCO output modes are shown in table 13.10.

Table 13.10 HSYNCO Output Modes

Mode

IHI Signal

IHO Signal

Meaning of IHO Signal

IHI signal (without

2fH modification)

HFBACKI input is output directly

IHI signal (with 2fH

modification)

Meaningless unless there is a double-frequency

part in the HFBACKI input

CL1 signal

HFBACKI input 1 interval is changed before output

No signal

HFBACKI

input

IHG signal

Internal synchronization signal is output

IHI signal (without

2fH modification)

CSYNCI input (composite synchronization signal)

is output directly

IHI signal (with 2fH

modification)

Double-frequency part of CSYNCI input (composite

synchronization signal) is eliminated before output

CL1 signal

CSYNCI input (composite synchronization signal)

horizontal synchronization signal part is separated

before output

S-on-G

mode

CSYNCI

input

IHG signal

Internal synchronization signal is output

IHI signal (without

2fH modification)

HSYNCI input (composite synchronization signal)

is output directly

IHI signal (with 2fH

modification)

Double-frequency part of HSYNCI input (composite

synchronization signal) is eliminated before output

CL1 signal

HSYNCI input (composite synchronization signal)

horizontal synchronization signal part is separated

before output

Composite

mode

HSYNCI

input

IHG signal

Internal synchronization signal is output

IHI signal (without

2fH modification)

HSYNCI input (horizontal synchronization signal) is

output directly

IHI signal (with 2fH

modification)

Meaningless unless there is a double-frequency

part in the HSYNCI input (horizontal

synchronization signal)

CL1 signal

HSYNCI input (horizontal synchronization signal) 1

interval is changed before output

Separate

mode

HSYNCI

input

IHG signal

Internal synchronization signal is output

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