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3. LLOAD Signal
The LLOAD signal is used to control the timing for the LCD driver to receive display
data. The period of the LLOAD signal synchronizes to one line of display. It is defined
as an integral multiple of the reference clock LCP0.
LVSYNC signal
LHSYNC signal
LLOAD signal
LD23-LD0 signal
LLOAD signal
LLOAD signal LCDLDDLY<PDT> = 1
LCP0 signal
LD23-LD0 signal
LDINV signal
The LHSYNC signal and LLOAD signal differs in that the LHSYNC signal is output
all the time whereas the LLOAD signal is output only at valid data lines (commons).
Display data is output in synchronization with the LLOAD signal. Therefore, if a
delay is inserted in the LLOAD signal through the LCDLDDLY register, data output
is also delayed.
Also note that when LCDLDDLY<PDT>=1 , data is output one LCP0 clock later than
the LLOAD signal.
LCDLDDLY<PDT>=0: Data is output in synchronization with the LLOAD signal.
LCDLDDLY<PDT>=1: Data is output one LCP0 clock later than the LLOAD signal.
The delay time for the LLOAD signal is controlled based on LCDLDDLY<PDT>=1.
Therefore, even if the delay time is set to "0" with LCDLDDLY<PDT>=0, the LLOAD
signal is output with a delay of one LCP0 clock. Be careful about this point.
Front dummy LHSYNC
(Vertical front porch)
92CZ26A-531
Refresh rate
LLOAD: Common size
(Valid data)
TMP92CZ26A
Back dummy LHSYNC
(Vertical back porch)
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