WM8144 datasheet(22/27 Pages) WOLFSON

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WM8144-10

Wolfson Microelectronics

Configuration of the WM8144-10 (Contd.)

Table 7: Control Bit Descriptions

Bit No

Bit(s)

Default

Description

Setup

ENADC

ADC standby control: 0 = standby, 1 = active

CDS

Select Correlated double sampling mode: 0 = normal sampling, 1 =

CDS mode

MONO

Mono/Colour select: 0 = colour, 1 = monochrome operation

DEFPG

Select Default Pixel Gain: 0 = external pixel gain, 1 = internal

DEFPO

Select Default Pixel Offsets: 0 = external pixel offsets, 1 = internal

DEFDV

Select default internal Data Valid: 0 = external DV, 1 = internal

VSMP6M

Required when VSMP at 6MSPS: 0 = other mode, 1 = VSMP at 6MSPS

DVMODE

External Data Valid control (refer to Bit Allocation Assignment table)

Setup

MUXOP

Eight bit output mode: 0 = ten-bit, 1 = 8-bit multiplexed

INVOP

Inverts ADC output: 0 = non-inverting, 1 = inverting

LATCHOP

OP bus updated on DV pulse; OP bus updated each sample, 1 = update

only on DV pulse

BYPASS

Bypass digital post-processing; 0 = no bypass, 1 = bypass

CDATOUT

Data on OP pins available on CDAT pins; 0 = no, 1 = yes

Setup

1-0

RLC1-0

Reset Level Clamp voltage

00 = 1.5V

01 = 2.5V

10 = 3.5V

11 = Reserved

3-2

PWP1-0

Parallel Word Partitioning

See Bit Allocation Assignment (Table 3)

5-4

CDSREF1-0

CDS Mode Reset Timing Adjust

00 = Advance 1 MCLK Period

01 = Normal

10 = Retard 1 MCLK Period

11 = Retard 2 MCLK Period

7-6

CHAN1-0

Monochrome mode channel select

00 = Red Channel

01 = Green Channel

10 = Blue Channel

11 = Reserved

Setup

DACRNG

Alters range of offset DAC output

0 = DAC output range equal to Vmid/2 (1.25V)

1 = DAC output range equal to 1.5 * Vmid/2 (1.875V)

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