HD64F2149YV datasheet(434/1075 Pages) RENESAS

434 / 1075 page

Section 13 Timer Connection

Rev. 3.00 Jan 18, 2006 page 406 of 1044

REJ09B0280-0300

13.3.7

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 meaning of the HSYNCO output in each mode is shown in table 13.9.

Table 13.9

Meaning of HSYNCO Output in Each Mode

Mode

IHI Signal

IHO Signal

Meaning of IHO Signal

No signal

HFBACKI

input

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

IHG signal

Internal synchronization signal is output

S-on-G

mode

CSYNCI

input

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

IHG signal

Internal synchronization signal is output

Composite

mode

HSYNCI

input

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

IHG signal

Internal synchronization signal is output

Separate

mode

HSYNCI

input

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

IHG signal

Internal synchronization signal is output

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