AD9925BBCZ datasheet(54/96 Pages) AD

54 / 96 page

AD9925

Rev. A | Page 54 of 96

SUSPEND

SYNC

H124, RG, V1 TO 4,

VSG, SUBCK

NOTES

1. SYNC RISING EDGE RESETS VD/HD AND COUNTERS TO ZERO.

2. SYNC POLARITY IS PROGRAMMABLE USING SYNCPOL REGIS

4. IF SYNCSUSPEND = 1, VERTICAL CLOCKS, H1 TO H2, AND

5. IF SYNCSUSPEND = 0, CLOCK OUTPUTS CONTINUE TO OPERA

3. DURING SYNC LOW, ALL INTERNAL COUNTERS ARE RESE

Figure 68. SYNC Timing to S

TER (ADDR 0

RG ARE HELD A

TE NORMAL

T AND VD/HD CA

ynchronize AD9925 with External Timing

NOTE

INTERNAL H-COUNTER IS RESET 23 CLOCK EDGES AFTER THE HD FALLING EDGE.

x13).

T THEIR DEFAULT POLARITIES.

LY UNTIL SYNC RESET EDGE.

N BE SUSPENDED USING THE SYNCSUSPEND REGISTER (ADDR 0x14).

0123

H-COUNTER

RESET

CLI

H-COUNTER

(PIXEL COUNTER)

3ns MIN

XXX

Figure 69. External VD/HD and Internal H-Counter Synchronization, Slave Mode

234

H-COUNTER

RESET

NOTE

TOGGLE POSITIONS CANNOT BE PROGRAMMED WITHIN 18 PIXELS OF PIXEL 0 LOCATION.

H-COUNTER

(PIXEL COUNTER)

N-1

N-2

NO TOGGLE POSITIONS ALLOWED IN THIS AREA

N-3

N-4

N-5

N-6

N-7

N-8

N-9

N-10

N-11

N-12

N-13

N-14

N-15

N-16

N-17

N-18

N-19

N-20

N-21

N-22

Figure 70. Toggle Position Inhibit Area, Master Mode

123

H-COUNTER

RESET

NOTE

TOGGLE POSITIONS CANNOT BE PROGRAMMED WITHIN 18 PIXELS OF PIXEL 0 LOCATION.

H-COUNTER

(PIXEL COUNTER)

N-1

N-2

NO TOGGLE POSITIONS ALLOWED IN THIS AREA

N-3

N-4

N-5

N-6

N-7

N-8

N-9

N-10

N-11

N-12

N-13

N-14

N-15

N-16

N-17

N-18

N-19

N-20

N-21

N-22

Figure 71. Toggle Position Inhibit Area, Slave Mode

AD9925BBCZ Datasheet(PDF) 54 Page - Analog Devices

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