MT9V112 Datasheet, PDF (26/58 Pages) Micron Technology – SOC VGA DIGITAL IMAGE SENSOR

PRELIMINARY
MT9V112
SOC VGA DIGITAL IMAGE SENSOR
Table 9: Colorpipe Register Description (continued)
Bits 11:0
Current zoom window width. After automatic zoom (R175:1), copy R171:1 to the snapshot X Zoom register
R166:1 (context A) or R160:1 (context B) so the snapshot has the same field of view as preview. Also copy to
snapshot X Size register R167:1 (context A) or R161 (context B) for largest snapshot.
R172:1—0x1AC – Reducer Current Vertical Zoom (R/O)
Default
0x0IE0
Description Current vertical zoom.
Bits 13:12
IR Y Shift.
0: No IR
1: 2x
2: 4x
3: 8x
Bits 11:0
Current zoom window height. After automatic zoom (R175:1), copy R172:1 to the snapshot Y Zoom register
R169:1 (context A) or R163:1 (context B) so the snapshot has the same field of view as preview. Also copy to
snapshot X Size register R170:1 (context A) or R164 (context B) for largest snapshot.
R174:1—0x1AE – Reducer Zoom Step Size (R/W)
Default
0x0C09
Description Zoom step sizes. Should be a multiple of the aspect ratio 5:4 for VGA or 4:3 VGA or 11:9 for CIF.
Bits 15:8
Zoom step size in X.
Bits 7:0
Zoom step size in Y.
R175:1—0x1AF – Reducer Zoom Control (R/W)
Default
0x0000
Description Resize Interpolation and zoom control.
Bit 15:10
Reserved.
Bit 9
Starts automatic “zoom out” in step sizes defined in R174:1.
Bit 8
Starts automatic “zoom in” in step sizes defined in R174:1.
Bit 7:0
Reserved.
R200:1—0x1C8 – Global Context Control (R/W)
Default
0x0000
Description
Defines sensor and colorpipe context for current frame. Registers R200:0, R200:1, and R200:2 are shadows of
each other. See description in R200:2. It is recommended that all updates to R200:n are handled by means of
a WRITE to R200:2.
Bit 15:0
See R200:2[15:0].
R226:1—0x1E2 – Effects Mode (R/W)
Default
0x7000
Description This register specifies which of several special effects to apply to each pixel passing through the pixel pipe.
Bits 15:8
Solarization threshold.
Bits 2:0
Specification of the effects mode.
“000”—No effect (pixels pass through unchanged).
“001”—Monochrome (chromas set to 0).
“010”—Sepia (chromas set to the value in the effects sepia register).
“011”—Negative (all color channels inverted).
“100”—Solarize (luma conditionally inverted).
“101”—Solarize2 (luma conditionally inverted, chromas inverted when luma inverted).
R227:1—0x1E3 – Effects Sepia (R/W)
Default
0xB023
Description This register specifies the chroma values for the sepia effect. In sepia mode, the chroma values of each pixel
are set to this value. By default, this register contains a brownish color, but it can be set to an arbitrary color.
Bit 15
Sign of Cb.
Bits 14:8
Magnitude of Cb in 0.7 fixed point.
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MT9V112_2.fm- Rev. A 1/05 EN
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