Cirrus Logic AN366 - Manual (Page 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
3
YES
NO
VALID
RESET
REGISTER
CHECKSUM
?