MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 403

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

12.3.2.2
Writes to this register will abort current conversion sequence.
Read: Anytime
Write: Anytime
Freescale Semiconductor
Module Base + 0x0001
ETRIGSEL
SRES[1:0]
Reset
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
Field
6–5
W
7
R
ETRIGSEL
ATD Control Register 1 (ATDCTL1)
0
7
External Trigger Source Select — This bit selects the external trigger source to be either one of the AD
channels or one of the ETRIG3-0 inputs. See device specification for availability and connectivity of ETRIG3-0
inputs. If a particular ETRIG3-0 input option is not available, writing a 1 to ETRISEL only sets the bit but has
no effect, this means that one of the AD channels (selected by ETRIGCH3-0) is configured as the source for
external trigger. The coding is summarized in
A/D Resolution Select — These bits select the resolution of A/D conversion results. See
coding.
WRAP3 WRAP2 WRAP1 WRAP0
1
If only AN0 should be converted use MULT=0.
0
0
1
1
1
1
1
1
1
1
SRES1
0
6
1
1
0
0
0
0
1
1
1
1
Table 12-2. Multi-Channel Wrap Around Coding
Figure 12-4. ATD Control Register 1 (ATDCTL1)
MC9S12G Family Reference Manual, Rev.1.01
Table 12-3. ATDCTL1 Field Descriptions
SRES0
1
1
0
0
1
1
0
0
1
1
5
1
0
1
0
1
0
1
0
1
0
1
SMP_DIS
0
4
Multiple Channel Conversions (MULT = 1)
Table
Wraparound to AN0 after Converting
Description
12-5.
ETRIGCH3
1
3
AN10
AN11
AN11
AN11
AN11
AN11
AN6
AN7
AN8
AN9
Analog-to-Digital Converter (ADC10B12CV2)
ETRIGCH2
2
1
ETRIGCH1
1
1
Table 12-4
ETRIGCH0
for
1
0
403