TPMC533 User Manual Issue 1.0.1
Page 21 of 107
3.2.1.2 ADC Device Registers
The following registers exist multiple times and each of the registers deals with a single ADC (eight ADC
Channels) on-board the TPMC533.
3.2.1.2.1
ADC Configuration Registers (0x010, 0x054, 0x098 and 0x0DC)
There is a dedicated ADC Configuration Register for each ADC (for all eight ADC Channels of each ADC).
After power-up the ADCs should be configured before switching to Sequencer Mode or using them in
Manual Mode.
Bit
Symbol
Description
Access
Reset
Value
31:4
-
Reserved
-
-
3:1
ADCx_OS
Oversampling Ratio
If oversampling is active, the ADC takes multiple samples
and averages them. This improves the signal-to-noise ratio.
The ADCx_BUSY high time in the Global ADC Status
Register is extended until all samples are taken.
Note: If Oversampling is turned on the maximum AD
Sample Rate of the ADC is less than 200kSPS.
OS
Oversampling Ratio
000
No Oversampling
001
2
010
4
011
8
100
16
101
32
110
64
111
Not valid
When changing the Oversampling Mode, a dummy sample
is required to set the ADC to the new Oversampling Ratio.
R/W
000
0
ADCx_IR
ADC Input Range
This setting describes the allowed input voltage on the ADC
Channel± pins. Also see chapter “ADC Data Coding”.
IR
Input Voltage Range
0
±5V
1
±10V
Allow a settling time of about 100µs when the ADC input
range is changed.
R/W
0
Table 3-7 : ADC Configuration Register