REV. 0

AD9845A

–12–

0101...

0101...

0101...

NOTE: 0 = GAIN0, 1 = GAIN1, 2 = GAIN2, 3 = GAIN3

2323...

2323...

2323...

HD

LINE 0

LINE 1

LINE 2

LINE m

LINE m–1

LINE 0

LINE 1

LINE 2

LINE m

LINE m–1

EVEN FIELD

ODD FIELD

VD

Figure 16. PxGA Mode 5 (VD Selected) Frame/Line Gain Register Sequence

SHP

HD

5 PIXEL MIN

PxGA GAIN

GAIN0

GAIN1

GAIN0

NOTES:

1. BOTH VD AND HD ARE INTERNALLY UPDATED AT SHP RISING EDGES.

2. EVERY HD RISING EDGE WITH A PREVIOUS VD FALLING EDGE WILL RESET TO 0101.

3. EVERY HD RISING EDGE WITH A PREVIOUS VD RISING EDGE WILL RESET TO 2323.

4. EVERY HD RISING EDGE WITHOUT A PREVIOUS VD RISING EDGE WILL REPEAT EITHER 0101... (EVEN) OR 2323 ... (ODD).

GAIN3

GAIN2

GAINX

GAINX

3ns MIN

VD

3ns MIN

Figure 17. PxGA Mode 5 (VD Selected) Detailed Timing

FRAME n

VD

HD

LINE 0

LINE 1

LINE 2

LINE m

0101...

1212...

0101...

LINE m–1

LINE 0

LINE 1

LINE 2

LINE m

0101...

1212...

0101...

LINE m–1

NOTE: 0 = GAIN0, 1 = GAIN1, 2 = GAIN2

FRAME n+1

Figure 18. PxGA Mode 6 (Mosaic Repeat) Frame/Line Gain Register Sequence

SHP

HD

PxGA GAIN

GAIN0

GAIN1

GAIN0

NOTES:

1. MINIMUM PULSEWIDTH FOR HD AND VD IS 5 PIXEL CYCLES.

2. BOTH VD AND HD ARE INTERNALLY UPDATED AT SHP RISING EDGES. MINIMUM SET-UP TIME IS 3ns.

3. EVERY HD RISING EDGE WITH A PREVIOUS VD RISING EDGE WILL RESET TO 0101.

4. EVERY HD RISING EDGE WITHOUT A PREVIOUS VD RISING EDGE WILL ALTERNATE BETWEEN 0101... AND 1212.

GAIN2

GAINX

GAINX

GAIN1

3ns MIN

VD

3ns MIN

5 PIXEL MIN

Figure 19. PxGA Mode 6 (Mosaic Repeat) Detailed Timing