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STA321 데이터시트(PDF) 65 Page - STMicroelectronics

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STA321
ADC
Doc ID 15351 Rev 3
65/157
10.2
Application schematic
Figure 40.
Typical connections for power supplies and inputs
10.2.1
Configuration example
This is an example of the register setup for the ADC inputs. It is assumed that every
peripheral is already configured and working correctly.
There are other configuration examples to help you get started please refer to other
chapters and also to Chapter 14: Register description on page 77 in order to get all the
necessary and complementary details.
Table 27 shows the register settings for selecting INL2 and INR2 as input source for SRC
and SAI_out1 and using the PGA with a 12-dB gain.
Table 27.
Example register settings for ADC
Register
Value
Description
ADCCFG1
0x40
Selecting INL2 and INR2 as sources
ADCCFG0
0x52
PGA Gain = +12 dB, PGA enabled, ADC clock on
P2SDATA
0x40
ADC Data routed also to the SAI_out



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