wm8215 Wolfson Microelectronics plc, wm8215 Datasheet - Page 22

• Manufacturer Part Number: wm8215
• Description: 60msps 10-bit 3-channel Ccd Digitiser
• Manufacturer: Wolfson Microelectronics plc

WM8215
NORMAL OPERATING MODES
w
CHANNELS
0
0
1
1
1
1
1
NUMBER
MONO
Table 3 WM8215 Normal Operating Modes
Table 4 Sampling Mode Summary
OF
3
2
1
Table 3 below shows the normal operating modes of the device. The MCLK speed can be specified
along with the MCLK:VSMP ratio to achieve the desired sample rate.
Note: In one channel mode the WM8215 can operate at 60MHz but DNL/INL values cannot be
guaranteed.
Table 4 below shows the different channel mode register settings required to operate the 8215 in 1, 2
and 3 channel modes.
Note: Unused input pins should be connected to AGND, unless reset level clamping is used.
0
1
0
0
0
0
1
TWOCHAN
Three channel
Pixel-by-Pixel
Two channel
Pixel-by-Pixel
One channel
Pixel-by-Pixel
DESCRIPTION
XX
XX
00
01
10
11
XX
CHAN[1:0]
AVAILABLE
CDS
YES
YES
YES
3-channel (colour mode)
2-channel (Blue PGA disabled)
1-channel (monochrome) mode.
Red channel selected, Green and Blue PGAs disabled.
1-channel (monochrome) mode.
Green channel selected, Red and Blue PGAs disabled.
1-channel (monochrome) mode.
Blue channel selected, Red and Green PGAs disabled.
Invalid mode
Invalid mode
20 MSPS
30 MSPS
45 MSPS
SAMPLE RATE
MAXIMUM
MODE DESCRIPTION
MCLK max = 60MHz
Minimum MCLK:VSMP
ratio = 3:1
MCLK max = 60MHz
Minimum MCLK:VSMP
ratio = 2:1
MCLK max = 45MHz
Minimum MCLK:VSMP
ratio = 1:1
REQUIREMENTS
TIMING
PD, Rev 4.2, February 2009
Production Data
MONO = 0
TWOCHAN = 0
MONO = 0
TWOCHAN = 1
MONO = 1
TWOCHAN = 0
SETTINGS
CHANNEL
MODE
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