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.
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| T1 |
S (FRAME) |
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| 240 CP1 pulses |
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| T2 | T3 |
CP1 (LINE) |
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UD0 to UD3 |
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LD0 to LD3 | frame n- 1 |
| frame n | frame n+ 1 |
| row 240/480 | row 1/241 | row 1/241 | |
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| 160 CP2 pulses |
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CP1 (L:INE) |
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UD0 to UD3 |
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LD0 to LD3 |
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| First pixels (1...4) | Last pixels (637...640) | ||
Figure 3. Video Input Timing Diagram.
Table 4. Video Input Timing.
Symbol | Name | Min | Max | Units |
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T1 | Frame time | 8.3 | ms | |
| Frame frequency | 120 | Hz | |
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T2 | CP1 High time | 60 | ns | |
T3 | CP1 Period | 34.5 | µs | |
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10