PAC7366

NTSC/PAL Digital Image SOC

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15

PixArt Imaging Inc.

V1.10

Dec. 2012

8. Sensor Pixel Array Structure

The active pixel array is 640 x 480 pixels for NTSC_TV, 768 x 576 pixels for PAL_TV. The active

border is for color interpolation, defect, denoise and edge enhancement.

Fig.8.1 Sensor Pixel Array

9. Auto Exposure Control and Auto Gain Control

Auto Exposure Control

Exposure time is manually set by registers when auto exposure control is off, instead it is controlled by

auto exposure time algorithm when auto exposure control is on.

Bank

Address

Bits

Register Name

Default Value

Notes

Hex

Dec

0

0x66

102

[4]

R_AE_EnH

1

0: Auto Exposure Control off

1: Auto Exposure Control on

Auto Gain Stage Upper Bound

Maximum gain is limited to upper bound.

Bank

Address

Bits

Register Name

Default Value

Notes

Hex

Dec

0

0x6D

109

[7:0] R_AG_stage_UB

0x96

48 : x16

64 : x32

80 : x64

96 : x128

Note : When AE is on.

Global gain control, Front gain control, Coase tuning global gain control

Analog gain x1~x32.

Bank

Address

Bits

Register Name

Default Value

Notes

Hex

Dec

1

0x08

08

[4:0]

Cmd_Global

0x00

1 + (Cmd_Global[4:0]/16)

1

0x09

09

[1:0]

Cmd_fgh

0x00

0 : x1

2 : x2

3 : x4

1

0x0A

10

[1:0]

Cmd_ggh

0x00

0 : x1

2 : x2

3 : x4

Note : When AE is off