Cirrus-logic AN366 Manual do Utilizador descarregar pdf (Página 30)

AN366

30 AN366REV2

SINGLE CONVERSION

The register checksum is computed each time a conversion is completed (Single or Con-

tinuous).

(See Figure 21.)

SDI = 0xD4 Send Single Conversion Command

Figure 21. Conversion Window

VALID REGISTER CHECKSUM TEST

PC/Controller tests if valid checksum is received (see Figure 22).

SDI = 0x90 0x01 0xFFFFFF Read Register Checksum

SDO = 0xFF 0xFF 0x46ECA1

Figure 22. Setup Window

SINGLE

CONVERSION

1 2

YES

VALID

RESET

CHECKSUM

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 49 50

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Cirrus-logic AN366 Manual do Utilizador Página 30