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 |