PAC7366 Datasheet, PDF (15/23 Pages) Pixart Imaging Inc. – NTSC/PAL DIGITAL IMAGE SOC

PAC7366
NTSC/PAL Digital Image SOC
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
z 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
Hex Dec
Bits
Register Name
Default Value
0 0x66 102 [4] R_AE_EnH
1
0: Auto Exposure Control off
1: Auto Exposure Control on
Notes
z Auto Gain Stage Upper Bound
Maximum gain is limited to upper bound.
Bank
Address
Hex Dec
Bits
0 0x6D 109 [7:0]
Note : When AE is on.
Register Name
R_AG_stage_UB
Default Value
0x96
48 : x16
64 : x32
80 : x64
96 : x128
Notes
z Global gain control, Front gain control, Coase tuning global gain control
Analog gain x1~x32.
Bank
Address
Hex Dec
Bits
1 0x08 08 [4:0]
1 0x09 09 [1:0]
1 0x0A 10 [1:0]
Note : When AE is off
Register Name
Cmd_Global
Cmd_fgh
Cmd_ggh
Default Value
0x00
0x00
0x00
1 + (Cmd_Global[4:0]/16)
0 : x1
2 : x2
3 : x4
0 : x1
2 : x2
3 : x4
Notes
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PixArt Imaging Inc.
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V1.10
15
Dec. 2012