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EL320.256-FD7 Operations Manual (020-0353-00A)
8
Table 4. Timing Characteristics.
Description Min Max Unit Note
T1 Vertical Front Porch 60 µs 1
T2 VS HIGH/LOW time 1 tVCLK 2
T3 Vertical Blank 40 µs
T4 Vertical Period 256 tHS
VS frequency 120 Hz
Description Min Typ Unit Note
T5 HS setup to VS 1 µs 3
T6 HS hold from VS 3 µs
T7 HS Low Time 4 tVCLK
T8 HS High Time 320 320 tVCLK 4
T9 HS period (tHS) 19 µs
Notes:
1. This time is needed to display the last row and to initiate the following
frame.
2. Only rising edge is used.
3. 2 tVCLK minimum
4. The number of VCLK pulses during HS high time must be even.
Video clock VCLK must be kept running continuously.
Setup and Hold Timing
Figure 4. Setup and Hold Timing.
Table 5. Setup and Hold Timing.
Symbol Description Min Max
tSU HS, VID, TVID setup to VCLK 8ns
tHOLD HS, VID, TVID hold from VCLK 8ns
tWL VCLK low width 16ns
tWH VCLK high width 16ns
tVCLK VCLK period 40ns
VCLK frequency 25 MHz