Datasheet
SCLK
DIN
DOUT
DRDY
MSB
0001001X
Mid-Byte LSB
1 8 1 24
NOP NOP NOP
RDATA
SCLK
DOUT
DIN
DRDY
NOPNOP NOP RDATA NOP NOP
1
D[23] D[14] D[1] D[1] D[0]D[17] D[16] D[15]D[22] D[23] D[22]
2 1 29 107 8 23 24 23 24
D[0]
ADS1246
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ADS1248
SBAS426G –AUGUST 2008–REVISED OCTOBER 2011
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RDATA—Read data once.
The RDATA command loads the most recent conversion result into the output register. After issuing this
command, the conversion result can be read out by sending 24 SCLKs, as shown in Figure 78. This
command also works in RDATAC mode.
When performing multiple reads of the conversion result, the RDATA command can be sent when the last
eight bits of the conversion result are being shifted out during the course of the first read operation by taking
advantage of the duplex communication nature of the SPI interface, as shown in Figure 79.
Figure 78. Read Data Once
Figure 79. Using RDATA in Full-Duplex Mode
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