Video Input Signals
The end of the top line of a frame is marked by S, scan start up signal as shown in Figure 3. The end of each row of data is marked by CP1 as shown in Figure 3 and Figure 4.
|
|
|
| T1 |
S (FRAME) |
|
|
|
|
|
|
|
| 240 CP1 pulses |
|
|
| T2 | T3 |
CP1 (LINE) |
|
|
|
|
UD0 to UD3 |
|
|
|
|
LD0 to LD3 | frame n- 1 |
| frame n | frame n+ 1 |
| row 240/480 | row 1/241 | row 1/241 | |
|
| 160 CP2 pulses |
| |
CP1 (L:INE) |
|
|
|
|
UD0 to UD3 |
|
|
|
|
LD0 to LD3 |
|
|
|
|
| First pixels (1...4) | Last pixels (637...640) | ||
Figure 3. Video Input Timing Diagram.
Table 4. Video Input Timing.
Symbol | Name | Min | Max | Units |
|
|
|
|
|
|
|
|
|
|
T1 | Frame time | 8.3 | ms | |
| Frame frequency | 120 | Hz | |
|
|
|
|
|
T2 | CP1 High time | 60 | ns | |
T3 | CP1 Period | 34.5 | µs | |
|
|
|
|
|
10
