13Hardware Examples
13 – 11
Figure 13.7 SPORT To AD7872 ADC Timing
SPORT0 Control Register: 0x3FF6
SPORT1 Control Register: 0x3FF2
1514131211109876543210
Inverted RFS
Word Length = 16 bits
011 1 0 111100
Data format = right justify, zero fill
Internally
generated RFS
Alternate receive
framing
Receive framing
required
SCLK generated
externally
Figure 13.8 SPORT To AD7872 ADC Control Register Settings
RFS is configured for the alternate framing mode, externally generated,
with inverted (active low) logic. The SPORT must also be programmed for
external serial clock and a serial word length of 16 bits. The configuration
of the SPORT control register for this application is shown in Figure 13.8.
MSB (0) LSB
DR
RFS
SCLK
0
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