Cirrus-logic AN366 Manual do Utilizador descarregar pdf (Página 35)

AN366

AN366REV2 35

IS PF=1?

PC/Controller tests if PF returned is 1.

STOP CONVERSIONS

(See Figure 29.)

SDI = 0xD8 Write Halt Conversion

SDO = 0xFF

Figure 29. Conversion Window

CLEAR DRDY in INTERRUPT STATUS

SDI = 0x80 0x57 0xFFFFFF Write INT STATUS DRDY (page 0, register 23)

SDO = 0xFF 0xFF 0x800000 (Set DRDY INT)

SEND AC GAIN CALIBRATION

(See Figure 30.)

SDI = 0xFE Write Gain Calibration – All Channels

SDO = 0xFF

Figure 30. Calibration Window

STOP

CONVERSIONS

0xD8

IS PF = 1 ?

CLEAR DRDY

SEND AC GAIN

CALIBRATION

0xFE

YES

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Cirrus-logic AN366 Manual do Utilizador Página 35