AD9920ABBCZ datasheet(62/112 Pages) AD

부품명	AD9920ABBCZ

상세설명	12-Bit CCD Signal Processor with V-Driver and Precision Timing Generator

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62 / 112 page

AD9920A

Rev. B | Page 62 of 112

SUBCK PROGRAMMABLE SETTINGS:

1. PULSE POLARITY USING THE SUBCK_POL REGISTER.

2. NUMBER OF PULSES WITHIN THE FIELD USING THE SUBCKNUM REGISTER (SUBCKNUM = 3 IN THIS EXAMPLE).

3. PIXEL LOCATION OF PULSE WITHIN THE LINE AND PULSE WIDTH PROGRAMMED USING THE SUBCK_TOG1 TOGGLE POSITION REGISTER.

SUBCK

tEXP

VSG

tEXP

Figure 81. Normal SUBCK Operation

SUBCK

NOTES

1. SECOND SUBCK PULSE IS ADDED IN THE LAST SUBCK LINE.

2. LOCATION OF SECOND PULSE IS FULLY PROGRAMMABLE USING THE SUBCKHP TOGGLE POSITION REGISTERS.

VSG

tEXP

Figure 82. High Precision SUBCK Operation

SUBCK

VSG

TRIGGER

EXPOSURE

(0x70)

tEXP

NOTES

1. SUBCK CAN BE SUPPRESSED FOR MULTIPLE FIELDS BY PROGRAMMING THE EXPOSURE REGISTER TO BE GREATER THAN 0.

2. THIS EXAMPLE USES EXPOSURE = 1.

3. TRIGGER REGISTER MUST ALSO BE USED TO START THE LOW SPEED EXPOSURE.

4. VD/HD OUTPUTS CAN ALSO BE SUPPRESSED USING THE VDHD_MASK REGISTER = 1.

Figure 83. Low Speed SUBCK Operation (SUBCKMASK_SKIP1 = 1)

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