Programming instructions

LD-14304-7
7. Timing Characteristics of input signals
Timing diagrams of input signal are shown in Fig.2.
7-1. Timing characteristics
Parameter Symbol Min. Typ. Max. Unit Remark
Clock Frequency 1/Tc
－
40.0 42.0 MHz
－
High time Tch 6
－－
ns
－
Low time Tcl 6
－－
ns
－
Duty ratio Th/T405060%
－
Data Setup time Tds 3
－－
ns
－
Hold time Tdh 5
－－
ns
－
Cycle TH 20.8 26.4
－μ
s
－
832 1056
－
clock
－
Horizontal
sync. signal
Pulse width THp 2 128 200 clock
－
Cycle TV 628 666 798 line
－
Vertical
sync. signal
Pulse width TVp 2 4 6 line
－
Horizontal display period THd 800 800 800 clock
－
Hsync-Clock phase difference THc 0
－
Tc-10 ns
－
Hsync-Vsync phase difference TVh 0
－
TH-THp ns
－
Vertical data start position TVs 23 23 23 line
－
Note) In case of lower frequency, the deterioration of display quality, flicker etc.,may be occurred.
7-2. Horizontal display position
The horizontal display position is determined by ENAB signal and the input data corresponding to the
rising edge of ENAB signal is displayed at the left end of the active area.
Parameter symbol Min. Typ. Max. Unit Remark
Enable signal Setup time Tes 5
－
Tc-10 ns
－
Pulse width Tep 2 800 TH-10 clock
－
Hsync-Enable signal phase difference THe 58 88 170 clock
－
Note) When ENAB is fixed "Low", the display starts from the data of C88(clock) as shown in Fig.2.
7-3. Vertical display position
The vertical display position, TVs is fixed “23” (line).
7-4. Input Data Signals and Display Position on the screen
D1,DH1
D1,DH2
D1,DH3
D2,DH2
D2,DH1
D3,DH1
D800,DH1
D800,DH600
D1,DH600
R
G B
Dis
p
la
y
p
osition of in
p
ut data
UP
05-Oct-2005