bit 7
ADC2 high/low thresholds
bit 6
ADC1 high/low thresholds
bit 5
ADC0 high/low thresholds
bit 4
Periodic timer
bit 3
GPIO3 edge
bit 2
GPIO2 edge
bit 1
GPIO1 edge
bit 0
GPIO0 edge
IoReportInterval
- when periodic timer I/O reporting is enabled, this parameter sets the interval between reports. The pa-
rameter scaling is 10 ms/count, and the default report interval is every 30 seconds.
IoPreDelay
- this parameter sets the time in milliseconds to delay collection of ADC readings after a module wakeup event
occurs, to allow settling of ADC input voltages.
IoBindingEnable
- this parameter enables I/O binding. Setting this parameter to 0x00 disables I/O binding (I/O mirroring)
from a remote device. Setting this parameter 0x01 enables I/O mirroring. When enabled, the data from any received event
report is used to drive the device’s own outputs. GPIO2 will be set to the event report’s GPIO0 reading, GPIO3 will be set
to the event report’s GPIO1 reading, and DAC0 and DAC1 will be set with the ADC0 and ADC1 readings respectively.
Note that if the
AdcDiffMode
parameter is set to 1
,
I/O binding cannot be used.
DacReference
- this parameter selects the reference voltage for the DACs:
Setting Reference
0x00
ADC_EXT_REF
0x01
AVVC (Analog Vcc)
0x02
Reserved
0x03
Disable DAC operation
AdcReference
- this parameter selects the reference voltage for the ADCs:
Setting Reference
0x00
ADC_EXT_REF
0x01
Internal Vcc divided by 1.6
0x02
Reserved
0x03
Disable ADC operation
AdcAveSelect
- this parameter selects the number of ADC measurements to average to produce each ADC reading, from
1 to 255 samples. Averaging over a larger number of measurements increases noise filtering but also increases the time it
takes to generate a set of readings:
ADC Mode
Module Awake
Module Sleeping
Single-ended, reading all three channels
216 µs
381 µs
Differential, reading both channels
160 µs
273 µs
Table 7.4.7.4
ExtAdcScaleFactor
- this parameter is the scale factor applied to an ADC measurement when the ADC reference is an
external voltage. The scale factor parameter is multiplied by 32768. For example, the parameter value for a scale factor of
1.12 = 1.12 * 32768 = 36700.16 or 0x8F5C.
©2012 by Murata Electronics N.A., Inc.
DNT90M Integration Guide (2012/09/17)
Page 45 of 74
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