XCM20014IBMN Freescale, XCM20014IBMN Datasheet - Page 26

• Manufacturer Part Number: XCM20014IBMN
• Manufacturer: Freescale
• Type: CMOSr

Specifications of XCM20014IBMN

• Sensor Image Color Type: Color
• Sensor Image Size Range: 250,920 to 480,000Pixels
• Sensor Image Size: 640x480Pixels
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 40C
• Package Type: CLCC
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Supplier Unconfirmed

MOTOROLA
26
5.3 Offset Calibration Block
Offset adjustments for the MCM20014 are done in sep-
arate sections of the ASP to facilitate FPN removal and
final image black level set.
The
set the initial offset of the pixel output in a range that will
facilitate per-column offset data generation for varying
The
to control the Column DOVA functionality and opera-
tional modes.
Setting bit ece enables the per-column DOVA to be
used and the per-column offset values loaded into the
DOVA RAM will be applied to the pixel output. The glo-
bal DOVA adjust circuit is enabled by default.
Setting the cntr bit resets the internal counter used to
repetitively load the RAM with user defined data. This is
used in cases where the system controller loses control
of the I
Setting the cal bit configures the Column DOVA RAM
using internally generated offset data. When the
MCM20014 is first initiated, it will automatically gener-
ate and load the Column DOVA RAM with the appropri-
ate data. However, if operational conditions such as
temperature or operating frequency change, the user
can use the cal bit to re-determine the appropriate col-
umn data.
The automatic calibration data is calculated using the
average differential offset across four dark rows. This
feature does not create the most effective data for re-
ducing the column oriented fixed pattern noise of the
device. The user can calculate the column offset data
Address
Number
msb (7)
Column DOVA Control Register; Table
Column DOVA DC Register; Table
7 - 6
4 - 0
20
Bit
x
5
2
h
C bus while writing to the Column DOVA RAM.
DC Offset
Function
Unused
Column
Sign
x
6
Unused
0
1
Offset = 2 * cdd
b
b
Freescale Semiconductor, Inc.
cdd[5]
= Positive Offset
= Negative Offset
For More Information On This Product,
5
Table 17. Column DOVA DC Register
17, is used to
Go to: www.freescale.com
18, is used
d
cdd[4]
Column DOVA DC
4
Description
operational conditions. In most operational scenarios,
this register can be left in its default state of 00
This register can also be used to apply a global offset
adjust. In this case, the user must take into account the
Color Gain and Global Gain registers to determine the
resulting offset at the output.
using their own algorithm and load this data via the I
bus as defined in this section.
cdd[3]
3
cdd[2]
2
cdd[1]
1
Default
00000
cdd[0]
Reset
State
lsb (0)
00
h
xx
0
.
b
h
MCM20014
b
2
C