CS5532-AS datasheet(19/52 Pages) CIRRUS

19 / 52 page

CS5531/32/33/34

DS289PP5

2.2.2. Command Register Quick Reference

D7(MSB)

D6D5D4

D3D2

D1D0

ARA

CS1

CS0

R/W

RSB2

RSB1

RSB0

BIT

NAME

VALUE FUNCTION

Command Bit, C

Must be logic 0 for these commands.

These commands are invalid if this bit is logic 1.

Access Registers as

Arrays, ARA

Ignore this function.

Access the respective registers, offset, gain, or channel-setup, as an array of regis-

ters. The particular registers accessed are determined by the RS bits. The registers

are accessed MSB first with physical channel 0 accessed first followed by physical

channel 1 next and so forth.

D5-D4

Channel Select Bits,

CS1-CS0

CS1-CS0 provide the address of one of the two (four for CS5533/34) physical input

channels. These bits are also used to access the calibration registers associated

with the respective physical input channel. Note that these bits are ignored when

reading data register.

Read/Write,R/W

Write to selected register.

Read from selected register.

D2-D0

RSB3-RSB0

000

001

010

011

101

110

111

Reserved

Offset Register

Gain Register

Configuration Register

Channel-Setup Registers

Reserved

D7(MSB)

D5D4

D3D2D1

CSRP2

CSRP1

CSRP0

CC2

CC1

CC0

BIT

NAME

VALUE FUNCTION

Command Bit, C

These commands are invalid if this bit is logic 0.

Must be logic 1 for these commands.

Multiple Conver-

sions, MC

Perform fully settled single conversions.

Perform conversions continuously.

D5-D3

Channel-Setup Reg-

ister Pointer Bits,

CSRP

000

...

111

These bits are used as pointers to the Channel-Setup registers. Either a single con-

version or continuous conversions are performed on the channel setup register

pointedto bythesebits.

D2-D0

Conversion/Calibra-

tion Bits, CC2-CC0

000

001

010

011

100

101

110

111

Normal Conversion

Self-Offset Calibration

Self-Gain Calibration

Reserved

System-Offset Calibration

System-Gain Calibration

Reserved

CS5532-AS 数据表(PDF) 19 Page - Cirrus Logic

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