Texas Instruments OMAP36 Series, Technical Reference Manual, Page: 1384 / 3738

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Camera ISP Register Manual
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Table 6-235. CCDC_CLAMP
Address Offset 0x0000 0030
Physical Address 0x480B C630 Instance ISP_CCDC
Description CLAMP CONTROL REGISTER
Type RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
OBSLEN OBSLN OBST RESERVED OBGAIN
CLAMPEN
Bits Field Name Description Type Reset
31 CLAMPEN Clamp enable RW 0x0
Enables clamping based on the calculated average of
optical black sample.
This bit is latched by the VS sync pulse.
0x0: Disable
0x1: Enable
30:28 OBSLEN Optical black sample length RW 0x0
Sets the number of optical black sample pixels per line to
include in the average calculation.
0x0: 1 pixel
0x1: 2 pixels
0x2: 4 pixels
0x3: 8 pixels
0x4: 16 pixels
27:25 OBSLN Optical black sample lines RW 0x0
Sets the number of optical black sample lines to include
in the average calculation.
0x0: 1 line
0x1: 2 lines
0x2: 4 lines
0x3: 8 lines
0x4: 16 lines
24:10 OBST Start pixel of optical black samples RW 0x0000
Start pixel position of optical black samples specified
from the start of HS in pixel clocks.
9:5 RESERVED Write 0s for future compatibility. RW 0x00
Reads returns 0.
4:0 OBGAIN Gain to apply to the optical black average RW 0x10
The gain value is in U5Q4 fixed point representation (0 to
1.9375).
Table 6-236. Register Call Summary for Register CCDC_CLAMP
Camera ISP Functional Description
• Camera ISP CCDC Functional Operations : [0] [1] [2] [3] [4]
Camera ISP Basic Programming Model
• Camera ISP CCDC Register Setup : [5] [6] [7] [8] [9] [10] [11]
• Camera ISP CCDC Register Accessibility During Frame Processing : [12]
• Camera ISP CCDC Image-Signal Processing : [13] [14] [15] [16] [17] [18] [19]
Camera ISP Register Manual
• Camera ISP CCDC Register Summary : [20]
• Camera ISP CCDC Register Description : [21]
1384Camera Image Signal Processor SWPU177N – December 2009 – Revised November 2010
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