CS5529

12

DS246F5

Command Register Descriptions

Perform Single Conversion

This command instructs the ADC to perform a single conversion.

Perform Continuous Conversions

This command instructs the ADC to perform continuous conversions.

Power Save/Run

If PS/R = 0, normal run mode is entered. If PS/R = 1, power save mode is entered.

Null

This command is used to clear the port flag in the continuous conversion mode when the port flag bit in the configuration register

is set to logic 1.

7

654

32

10

1

100

00

00

7

654

32

10

1

010

00

00

7

654

32

10

1

000

00

0

PS/R

7

654

32

10

0

000

00

00

Table 1. Command Set

D7(MSB)

D6D5D4D3D2D1D0

CB

SC

CC

R/W

RSB2

RSB1

RSB0

PS/R

BIT

NAME

VALUE

FUNCTION

D7

Command Bit, CB

0

1

Null command (no operation). All command bits,

including CB must be 0.

Logic 1 for executable commands.

D6

Single Conversion, SC

0

1

Single Conversion not active.

Perform a conversion.

D5

Continuous Conversions,

CC

0

1

Continuous Conversions not active.

Perform conversions continuously.

D4

Read/Write, R/W

0

1

Write to selected register.

Read from selected register.

D3-D1

Register Select Bit, RSB2-

RSB0

000

001

010

011

100

101

110

111

Offset Register

Gain Register

Configuration Register

Conversion Data Register (read only)

Set-up Registers (Offset, Gain, Configuration)

Reserved

Reserved

Reserved

D0

Power Save/Run, PS/R

0

1

Run

Power Save