Signal Timing; Table 10. Video Signal Timing; Table 11. Vertical Mode Video Signal Timing - Planar LC640.480.33-AC Operation Manual

Signal Timing

Video signal timing diagrams are shown in Figures 5, 6, and 7. The following table refers
to these diagrams.

Table 10. Video signal timing.

Parameter
Clock freq
hi time
lo time
Data setup time
hold time
Horiz. cycle
sync
PW
Vertical cycle
sync
PW
Horiz.display time
Horiz. to clock
Vsync to Hsync
Enable setup time
hold time
Hsync to Enable
Table 11 below summarizes timing for the different vertical modes given typical vertical
sync "cycle" (TV) values. In this table, data for line TVn is displayed as the first top row
on the screen.

Table 11. Vertical mode video signal timing.

Mode Symbol
V-data start TVs
V-data period TVd
V-display start TVn
V-display period –
The LC640.480.33-AC display timing is fundamentally the same as the Sharp
LQ10D421 display. Horizontal display position is determined by the rising edge of the
ENAB signal, and the ENAB signal has no relation to the vertical display position. If
ENAB is permanently low, display starts from the data at "C104" referred to in the
timing diagrams in Figures 5, 6, and 7. ENAB should not be left at a logic high
permanently. In 400 and 350 line modes, data should be at a logic low during the vertical
invalid period.
Symbol Mode Min
1/Tc all –
Tch all 5
Tcl all 10
Tds all 5
Tdh all 10
TH all 30.0
all 750
THp all 2
TV 480 515
400 446
350 447
TVp all 1
THd all 640
THc all 10
TVh all 0
Tes – 5
Tep – 2
THe – 44
480 line 400 line
34 34
480 400
34 443-TV
480 480
LC640.480.33-AC Operations Manual (OM600-01)
Typ Max Units
25.18 28.33 MHz
– – ns
– – ns
– – ns
– – ns
31.78 –
s
800 900 clock
96 200 clock
525 560 line
449 480 line
449 510 line
– 34 line
640 640 clock
– Tc-10 ns
– TH-THp clock
– Tc-10 ns
640 640 clock
– TH-664 clock
350 line
61
350
445-TV
480
11