CS5522-AP datasheet(19/56 Pages) CIRRUS

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CS5521/22/23/24/28

DS317F2

2.2.3 Command Register Quick Reference

D7(MSB)

D6D5

D4D3

D2D1

CS2

CS1

CS0

R/W

RSB2

RSB1

RSB0

BIT

NAME

VALUE

FUNCTION

Command Bit, CB

Must be logic 0 for these commands.

See table below.

D6-D4

Channel Select Bits,

CSB2-CSB0

000

111

CS2-CS0 provide the address of one of the eight physical

channels. These bits are used to access the calibration regis-

ters associated with respective channels.

Note: These bits are ignored when reading the data register.

Read/Write, R/W

Write to selected register.

Read from selected register.

D2-D0

RSB2-RSB0

000

001

010

011

101

110

111

Reserved

Offset Register

Gain Register

Configuration Register

Channel Set-up Registers

- register is 48-bits long for CS5521/22

- register is 96-bits long for CS5523/24

- register is 192-bits long for CS5528

Reserved

D7(MSB)

D6D5

D4D3

D2D1

CSRP3

CSRP2

CSRP1

CSRP0

CC2

CC1

CC0

BIT

NAME

VALUE

FUNCTION

Command Bit, CB

See table above.

Must be logic 1 for these commands.

D6-D3

Channel Pointer Bits,

CSRP3-CSRP0

0000

1111

These bits are used as pointers to the Setups.

Note: The MC bit, must be logic 0 for these bits to take effect.

When MC = 1, these bits are ignored. The LP, MC, and RC

bits in the configuration register are ignored during calibra-

tion.

D2-D0

Conversion/Calibration

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

Table 2. Command Register Quick Reference

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