WM8196
Production Data
OPERATING MODES
Table 5 summarises the most commonly used modes, the clock waveforms required and the register
contents required for CDS and non-CDS operation.
MODE
DESCRIPTION
CDS
AVAILABLE
MAX
SAMPLE
RATE
SENSOR
INTERFACE
DESCRIPTION
TIMING
REQUIRE-
MENTS
REGISTER
CONTENTS
WITH CDS
REGISTER
CONTENTS
WITHOUT CDS
1
Colour
Pixel-by-Pixel
Yes
4MSPS
The 3 input
channels are
sampled in
parallel. The
signal is then
gain and offset
adjusted before
being
MCLK max =
24MHz
SetReg1:
03(hex)
SetReg1: 01(hex)
MCLK: VSMP
ratio is 6:1
multiplexed into
a single data
stream and
converted by the
ADC, giving an
output data rate
of 12MSPS max.
2
3
Monochrome/
Colour
Line-by-Line
Yes
Yes
4MSPS
8MSPS
As mode 1
except:
Only one input
channel at a time
is continuously
sampled.
MCLK max =
24MHz
SetReg1:
07(hex)
SetReg1: 05(hex)
MCLK: VSMP
ratio is 6:1
Fast
Monochrome/
Colour
Identical to mode MCLK max =
2
Identical to
mode 2 plus
SetReg3:
bits 5:4 must
be set to
Identical to
mode 2
24MHz
MCLK: VSMP
ratio is 3:1
Line-by-Line
0(hex)
4
5
Maximum
speed
Monochrome/
Colour
No
12MSPS Identical to mode MCLK max =
CDS not
possible
SetReg1: 45(hex)
2
24MHz
MCLK: VSMP
ratio is 2:1
Line-by-Line
Slow Colour
Pixel-by-Pixel
Yes
3MSPS
3MPS
Identical to mode MCLK max =
Identical to
mode 1
Identical to
mode 1
1
24MHz
MCLK: VSMP
ratio is
2n:1, n ≥ 4
6
Slow
Monochrome/
Colour
Yes
Identical to mode MCLK max =
Identical to
mode 2
Identical to
mode 2
2
24MHz
MCLK: VSMP
ratio is
Line-by-Line
2n:1, n ≥ 4
Table 5 WM8196 Operating Modes
Notes:
1.
2.
In Monochrome mode, SetReg3 bits 7:6 determine which input is to be sampled.
For Colour Line-by-Line, set control bit LINEBYLINE. For input selection, refer to Table 4, Colour Selection
Description in Line-by-Line Mode.
PD Rev 4.3 March 2007
22
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
