
MOTOROLA
Revision 8.0 - 28 November 2001 : MCM20027
32
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
ImageMOS
12.0 MCM20027 Utility Programming Registers
12.1 Register Reference Map
The I
2
C addressing is broken up into groups of 16 and
assigned to a specific digital block. The designated
block is responsible for driving the internal control bus,
when the assigned range of addresses are present on
the internal address bus. The grouping designation and
assigned range are listed in
Table 6
. Each block con-
tains registers which are loaded and read by the digital
and analog blocks to provide configuration control via
the I
2
C serial interface.
Table 7
contains all the I
2
C address assignments. The
table includes a column indicating whether the register
values are shadowed with respect to the sensor inter-
face. If the register is shadowed, the sensor interface
will only be updated upon frame boundaries, thereby
eliminating intraframe artifacts resulting from register
changes.
Address Range
Block Name
00
h
- 2F
h
Analog Register Interface
40
h
- 7F
h
Sensor Interface
80
h
- BF
h
Column Offset coeff.
Table 6. I
2
C Address Range Assignments
Hex
Address
Register Function
Defa
ult
Ref.
Table
Shadow
ed
00
h
DPGA Color 1 Gain Register
(Green of Green-Red
Row)
0E
h
Table 8, page 35
Yes
01
h
DPGA Color 2 Gain Register
(Red)
0E
h
Table 9, page 35
Yes
02
h
DPGA Color 3 Gain Register
(Blue)
0E
h
Table 10, page 36
Yes
03
h
DPGA Color 4 Gain Register
(Green of Blue-Green
Row)
0E
h
Table 11, page 36
Yes
04
h
Unused
05
h
Color Tile Configuration Register
05
h
Table 12, page 37
No
06
h
Color Tile Row 1 Definition Register
44
h
Table 13, page 38
No
07
h
Color Tile Row 2 Definition Register
EE
h
Table 14, page 38
No
08
h
Color Tile Row 3 Definition Register
00
h
Table 15, page 39
No
09
h
Color Tile Row 4 Definition Register
00
h
Table 16, page 39
No
0A
h
Negative Voltage Reference Code Register
76
h
Table 17, page 40
No
0B
h
Positive Voltage Reference Code Register
80
h
Table 18, page 40
No
0C
h
Power Configuration Register
00
h
Table 19, page 41
No
0D
h
Factory Use Only
FUO
FUO
FUO
0E
h
Reset Control Register
00
h
Table 20, page 42
No
0F
h
Device Identification (read only)
50
h
No
Table 7. I
2
C Address Assignments