wm8215 Wolfson Microelectronics plc, wm8215 Datasheet - Page 24

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

ADDRESS
000001
(01h)
WM8215
REGISTER MAP DESCRIPTION
w
<A5:A0>
Setup Register
1
REGISTER
The following table describes the function of each of the control bits shown in Table 5
BIT
5:4
7:6
NO
0
1
2
3
PGAFS[1:0]
TWOCHAN
Not Used
NAME(S)
MONO
CDS
EN
BIT
DEFAULT
00
00
1
1
0
0
Global Enable
0 = complete power down,
1 = fully active (individual blocks can be disabled using
individual powerdown bits – see setup register 5).
Select correlated double sampling mode:
0 = single ended mode,
1 = CDS mode.
Sampling mode select
0 = other mode (2 or 3-channel)
1 = Monochrome (1-channel) mode. Input channel
selected by CHAN[1:0] register bits, unused channel is
powered down.
TWOCHAN and MONO should not be set concurrently
Sampling mode select
0 = other mode (1 or 3-channel)
1 = 2-channel mode. Inputs channels are Red and Green,
Blue channel is powered down.
TWOCHAN and MONO should not be set concurrently
Offsets PGA output to optimise the ADC range for different
polarity sensor output signals. Zero differential PGA input
signal gives:
0x = Invalid option. Either ‘10’ or ‘11’ must be set.
10 = Full-scale positive output (OP=1023) – use for
negative going video.
11 = Full-scale negative output (OP=0) - use for positive
going video
Must be set to 0
NB, Set INVOP=1 if zero differential input should
give a zero output code with negative going
video.
DESCRIPTION
PD, Rev 4.2, February 2009
Production Data
24