Chapter 13 Analog-to-Digital Converter (ADC12B16CV1)
MC9S12XE-Family Reference Manual , Rev. 1.19
506
Freescale Semiconductor
13.3.2
Register Descriptions
This section describes in address order all the ADC12B16C registers and their individual bits.
13.3.2.1
ATD Control Register 0 (ATDCTL0)
Writes to this register will abort current conversion sequence.
Read: Anytime
Write: Anytime, in special modes always write 0 to Reserved Bit 7.
0x0024
ATDDR10
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
0x0026
ATDDR11
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
0x0028
ATDDR12
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
0x002A
ATDDR13
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
0x002C
ATDDR14
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
0x002E
ATDDR15
R
See
Section 13.3.2.12.1, “Left Justified Result Data (DJM=0)”
and
Section 13.3.2.12.2, “Right Justified Result Data (DJM=1)”
W
Module Base + 0x0000
7
6
5
4
3
2
1
0
R
Reserved
0
0
0
WRAP3
WRAP2
WRAP1
WRAP0
W
Reset
0
0
0
0
1
1
1
1
= Unimplemented or Reserved
Figure 13-3. ATD Control Register 0 (ATDCTL0)
Table 13-2. ATDCTL0 Field Descriptions
Field
Description
3-0
WRAP[3-0]
Wrap Around Channel Select Bits
— These bits determine the channel for wrap around when doing multi-
channel conversions. The coding is summarized in
.
Table 13-3. Multi-Channel Wrap Around Coding
WRAP3
WRAP2
WRAP1
WRAP0
Multiple Channel Conversions (MULT = 1)
Wraparound to AN0 after Converting
0
0
0
0
Reserved
(1)
Address
Name
Bit 7
6
5
4
3
2
1
Bit 0
= Unimplemented or Reserved
Figure 13-2. ADC12B16C Register Summary (Sheet 3 of 3)
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Trade
Commission,
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