WM8213_08 Datasheet, PDF (32/38 Pages) Wolfson Microelectronics plc – 24MSPS 16-bit CCD Digitiser

WM8213
ADDRESS
<A5:A0>
000010
(02h)
REGISTER
Setup
Register 2
Production Data
BIT
BIT
DEFAULT
NO NAME(S)
DESCRIPTION
1:0 OPFORM[1:0]
0
Determines the output data format.
x0 = 8-bit multiplexed (8+8 bits)
01 = 8-bit parallel (8-MSBs only)
11 = 4-bit multiplexed mode (4+4+4+4 bits). This mode is only
valid when LEGACY=1.
2
INVOP
0
3
OPD
0
4 LOWREFS
0
5 RLCDACRNG
1
Digitally inverts the polarity of output data.
0 = negative going video gives negative going output,
1 = negative-going video gives positive going output data.
Output Disable. This works with the OEB pin to control the output
pins.
0=Digital outputs enabled, 1=Digital outputs high impedance
OEB (pin) OPD
OP pins
0
0
Enabled
0
1
High Impedance
1
0
High Impedance
1
1
High impedance
Reduces the ADC reference range (2*[VRT-VRB]), thus changing
the max/min input voltages.
0= ADC reference range = 2.0V
1= ADC reference range = 1.2V
Sets the output range of the RLCDAC.
0 = RLCDAC ranges from 0 to AVDD (approximately),
1 = RLCDAC ranges from 0 to VRT (approximately).
7:6
DEL[1:0]
00
Controls the latency from sample to data appearing on output
pins
Latency
DEL LEGACY=0
All timing modes
00 7 MCLK periods
01 8 MCLK periods
10 9 MCLK periods
LEGACY=1
timing modes 1-2,4-6
16.5 MCLK periods
18.5 MCLK periods
20.5 MCLK periods
LEGACY
=1
timing
mode 3
23.5
MCLK
periods
26.5
MCLK
periods
29.5
MCLK
periods
11 10 MCLK periods
22.5 MCLK periods
31.5
MCLK
periods
w
PD Rev 4.1 July 2008
32