SBAS418I – SEPTEMBER 2007 – REVISED MARCH 2015
12 Configuration Guide
4.
Set the data mode.
After register configuration,
After RESET or power-on, the registers can be
the device may be configured for Read Data
configured using the following procedure:
Continuous mode, either by the Read Data
1.
Reset the serial interface.
Before using the
Continuous command or configured in Read Data
serial interface, it may be necessary to recover
By Register mode using SDATAC command.
the serial interface (undefined I/O power-up
5.
Synchronize readings.
Whenever SYNC is high,
sequencing may cause false SCLK detection). To
the ADS1282 freely runs the data conversions.
reset the SPI interface, toggle the RESET pin or,
To stop and re-sync the conversions, take SYNC
when in Read Data Continuous mode, hold SCLK
low and then high.
low for 64 DRDY periods.
6.
Read data.
If the Read Data Continuous mode is
2.
Configure the registers.
The registers are
active, the data are read directly after DRDY falls
configured by either writing to them individually or
by applying SCLK pulses. If the Read Data
as a group. Software may be configured in either
Continuous mode is inactive, the data can only
mode. The SDATAC command must be sent
be read by Read Data By Command. The Read
before register read/write operations to cancel the
Data opcode command must be sent in this mode
Read Data Continuous mode.
to read each conversion result (note that DRDY
3.
Verify register data.
The register may be read
only asserts after each read data command is
back for verification of device communications.
sent).
Copyright © 2007–2015, Texas Instruments Incorporated
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