CS5531-AS datasheet(21/50 Pages) CIRRUS

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CS5531/32/33/34-AS

DS289F5

PERFORM CALIBRATION

Function:

These commands instruct the ADC to perform a calibration on the physical input channel se-

lected by the setup register which is chosen by the command byte pointer bits (CSRP2 -

CSRP0).

CSRP [2:0] (Channel Setup Register Pointer Bits)

000

Setup 1 (All devices)

001

Setup 2 (All devices)

010

Setup 3 (All devices)

011

Setup 4 (All devices)

100

Setup 5 (All devices)

101

Setup 6 (All devices)

110

Setup 7 (All devices)

111

Setup 8 (All devices)

CC [2:0] (Calibration Control Bits)

000

Reserved

001

Self-Offset Calibration

010

Self-Gain Calibration

011

Reserved

100

Reserved

101

System-Offset Calibration

110

System-Gain Calibration

111

Reserved

SYNC1

Function:

Part of the serial port re-initialization sequence.

SYNC0

Function:

End of the serial port re-initialization sequence.

NULL

Function:

This command is used to clear a port flag and keep the converter in the continuous conversion mode.

D7(MSB)

CSRP2

CSRP1

CSRP0

CC2

CC1

CC0

D7(MSB)

111

D7(MSB)

111

D7(MSB)

000

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