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MT9V403C12STM Datasheet(PDF) 6 Page - Micron Technology |
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MT9V403C12STM Datasheet(HTML) 6 Page - Micron Technology |
6 / 33 page 1/2-INCH VGA (WITH FREEZE-FRAME) CMOS ACTIVE-PIXEL DIGITAL IMAGE SENSOR 09005aef80c07280 Micron Technology, Inc., reserves the right to change products or specifications without notice. MT9V403_DS.fm - Rev. B 1/04 EN 6 ©2004 Micron Technology. Inc. Table 3: Determination of Frame Timing NOTE: N = number of rows in image RT = row time VB = vertical blanking rows (255 rows maximum); set in register 6 HB = horizontal blanking in SYSCLK cycles (255 maximum); set forth in register 6 Simultaneous Master Mode There are two possible operation methods for mas- ter mode: simultaneous master mode and sequential master mode. One of these operation modes must be selected via the two-wire serial interface. In simulta- neous master mode the exposure period occurs during readout. The frame synchronization waveforms are shown in Figure 6 and Figure 7. This is the fastest mode of operation since the exposure and readout are happening in parallel rather than sequentially. Please note that with this speed optimized timing the first row readout is the last row of the previous frame that is still in the row memory. Figure 6: Simultaneous Master Mode Frame Synchronization Waveforms readout time > exposure time NOTE: Vertical blanking is nominally 1 SYSCLK and 0 row times, and may be increased by using register 6. Figure 7: Simultaneous Master Mode Frame Synchronization Waveforms exposure time > readout time NOTE: Vertical blanking is nominally 1 SYSCLK and 0 row times, and may be increased by using register 6. EXPOSURE TIME > READOUT TIME READOUT TIME > EXPOSURE TIME No Blanking Frame Time = Exposure Time Frame Time = N x RT With Vertical Blanking Frame Time = Exposure Time + VB Frame Time = (N + VB) x RT Vertical Blanking EXPOSE (output) FRAME_VALID (output) ROW_VALID (output) DATA [9:0] (output) Exposure Time XXX XXX Row 2 Row 1 Row N Row N-1 Row 479 Row 478 Row 481 Row 1 Row 2 XXX XXX XXX Row 480 Row N Row N-1 Row 479 Row 478 XXX Row 480 ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) Vertical Blanking EXPOSE (output) FRAME_VALID (output) ROW_VALID (output) DATA [9:0] (output) Exposure Time XXX XXX Row 2 Row 1 Row 479 Row 478 Row 1 Row 2 Row 480 Row 479 Row 478 Row 480 ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) Row 481 |
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