sx8724s Semtech Corporation, sx8724s Datasheet - Page 38

• Manufacturer Part Number: sx8724s
• Description: Zoomingadc For Sensing Data Acquisition
• Manufacturer: Semtech Corporation

Revision 1.0
© Semtech
9.3 ADC Samples Reading
When the device is in Sample Shift Mode or Combined Data Ready mode, the register reading will give erroneous data.
Always disable the Sample Shift Mode and Combined Data Ready mode to read the registers.
ADVANCED COMMUNICATIONS & SENSING
The default SPI mode the ADC samples must be read with the default SPI read sequences described in
The SAMPLE SHIFT mode allow to read directly the 16-bit conversion result of RegACOutLsb[0x50] and
The COMBINED DATA READY mode is a SAMPLE SHIFT mode which combines the ADC Ready function with the SPI
transmission.
RegACOutMsb[0x51] without a register read sequence. This mode is described in
MISO signal to reduce the number of wires to 4 between the master and the slave. This mode is described in
COMBINED DATA READY Mode
5
4
February 2011
Disable SAMPLE SHIFT
mode
SampleShiftEn bit set to ‘0’
Disable COMBINED
DATA READY
DataReadyEn set to 0
Figure 23. ADC samples reading modes with the SPI interface
1
Reset
section.
Page 38
DATA READY
COMBINED
Default SPI
with MISO
SAMPLE
SHIFT
mode
mode
mode
ZoomingADC for sensing data acquisition
2
3
Enable SAMPLE SHIFT
mode
SampleShiftEn bit set to ‘1’
Enable COMBINED
DATA READY mode
DataReadyEn set to 1
9.3.1. SAMPLE SHIFT
SX8724S
www.semtech.com
DATASHEET
9.2. Data
Mode.
9.3.2.