Datasheet

Data Sheet ADAS1000/ADAS1000-1/ADAS1000-2
Rev. A | Page 75 of 80
SOFTWARE FLOWCHART
Figure 81 shows a suggested sequence of steps to be taken to interface to multiple ADAS1000/ADAS1000-1/ADAS1000-2 devices.
Figure 81. Suggested Software Flowchart for Interfacing to Multiple ADAS1000/ADAS1000-1/ADAS1000-2 Devices
IS CRC
CORRECT?
DRDY
LOW?
POWER UP ADAS1000
DEVICES
ADAS1000 GOES INTO
POWER-DOWN MODE
09660-038
WAIT FOR POR ROUTINE
TO COMPLETE, 1.5ms
INITIALIZE SLAVE
DEVICES
INITIALIZE MASTER DEVICE
ENABLING CONVERSION
ISSUE READ FRAME
COMMAND (WRITE TO 0x40)
DISCARD
FRAME DATA
ISSUE SCLK CYCLES (SDI = 0)
TO CLOCK FRAME DATA OUT
AT PROGRAMMED DATA RATE
ACTIVITY
ON
SDI?
RETURN
TO ECG
CAPTURE?
POWER-DOWN?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
ISSUE READ FRAME
COMMAND (WRITE TO 0x40)
ECG CAPTURE COMPLETE
POWER-DOWN ADAS1000
ECGCTL = 0x0
ADAS1000 STOPS CONVERTING,
SDI WORD USED TO
RECONFIGURE DEVICE