ADS1118_13 Datasheet, PDF (24/38 Pages) Texas Instruments – Ultra-Small, Low-Power, SPI™-Compatible, 16-Bit Analog-to-Digital Converter and Temperature Sensor with Internal Reference

ADS1118
SBAS457C – OCTOBER 2010 – REVISED FEBRUARY 2013
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16-Bit Data Transmission Cycle
If Config register data are not required to be readback, the ADS1118 conversion data can also be clocked out in
a short 16-bit data transmission cycle, as shown in Figure 46. Therefore, CS must be taken high after the 16th
SCLK cycle. Taking CS high resets the SPI interface. The next time CS is taken low, data transmission starts
with the currently buffered conversion result on the first SCLK rising edge. If DOUT/DRDY is low when data
retrieval starts, the conversion buffer is already updated with a new result. Otherwise, if DOUT/DRDY is high, the
same result from the previous data transmission cycle is read.
CS
SCLK
Hi-Z
DOUT/DRDY
1
9
DATA MSB DATA LSB
1
9
DATA MSB DATA LSB
DIN
CONFIG MSB CONFIG LSB
CONFIG MSB CONFIG LSB
Figure 46. 16-Bit Data Transmission Cycle
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