MT9V403 Micron, MT9V403 Datasheet - Page 17

• Manufacturer Part Number: MT9V403
• Description: 1/2-INCH VGA (WITH FREEZE-FRAME) CMOS ACTIVE-PIXEL DIGITAL IMAGE SENSOR
• Manufacturer: Micron

Table 4:
Register Start-up Sequence
be reset by bringing the LRST_N pin LOW. This will ini-
tialize all of the registers to their default values. Upon
the release of reset, the sensor will perform ADC cali-
bration. The default mode is simultaneous master
mode with the horizontal blanking register set to 169
and the vertical blanking register set to 35. The default
frame size is 648 x 480 pixels, excluding dark pixels.
The first frame starts just three SYSCLK cycles after the
Feature Description
Signal Path
Figure 21.
09005aef80c07280
MT9V403_DS.fm - Rev. B 1/04 EN
READ/
WRITE
CONTROL
W/R
Read only
Upon powering up the MT9V403, the sensor should
An example of the signal path is shown below in
Pixel
VRST_PIX
Detector
REGISTER
Photo
Complete Register Description (continued)
Reg143
NAME
Reg59
Start Exposure
Switch (PG)
End
Exposure
Switch (TX)
V
Bits 0-3 bias value.
Bit 7 = 1 disable internal bias.
Bits 4-6, 8-15 not used, set to 0.
ADC calibration data output register.
REF
1 bias control.
Memory
Pixel
V
AA
Reset
Memory
Switch
(RESMEM)
Figure 21: Signal Path
1/2-INCH VGA (WITH FREEZE-FRAME) CMOS
FUNCTION
VLN1
Buffer
Column Processing
VLP
ACTIVE-PIXEL DIGITAL IMAGE SENSOR
V
REF
VLN_AMP
-
+
PGA
17
V
Buffer
end of calibration and the integration process takes
place during this frame but valid data for the first pixel
row is not output until the second frame.
ten to registers at any time but they do not take effect
until the subsequent frame. Writing to two-wire serial
interface registers has no effect on the output timing
(i.e., it does not slow down or stop output); the excep-
tion to this rule is when the sensor is commanded to
perform ADC calibration.
LN
_
OUT
All two-wire serial interface parameters can be writ-
Sample
Micron Technology, Inc., reserves the right to change products or specifications without notice.
& Hold
Calibration
ADC
VOFF/20
Offset
V
REF
DAC
2
DEFAULT CONTENTS
0000000000001100
*********0000000
7
V
VLN2
REF
ADC
1
10
©2004 Micron Technology. Inc.
To
ADC
registers
REGISTER
ADDRESS
10001111
0011101