Analog-to-Digital Converter (ADC)
PXN20 Microcontroller Reference Manual, Rev. 1
34-40 Freescale Semiconductor
Address: See Tabl e 34 -1. Access: User read/write
0123456789101112131415
R000000000000
VALID OVERW
RESULT
W
Reset0000000000000 0 00
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R000000
CDATA
W
Reset0000000000000 0 00
Figure 34-38. External Channel n Data Register (EXTDATAREGn)
Table 34-40. EXTDATAREGn Field Descriptions
Field Description
VALID Used to notify when the data is valid (a new value has been written). It is automatically cleared when data is
read.
OVERW Overwrite data. Used to notify when a conversion data is overwritten by a newer result.The new data is written
or discarded according to the OWREN bit of MCR register.
RESULT This bit reflects the mode of conversion for the corresponding channel.
00 Data is a result of normal conversion mode.
01 Data is a result of injected conversion mode.
10 Data is a result of CTU conversion mode.
11 reserved
CDATA Channel 64 – 95 converted data.
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