Freescale Semiconductor MCF52230 ColdFire, Reference Manual

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Analog-to-Digital Converter (ADC)
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
28-9 Freescale Semiconductor
SAMPLE4-7 should only contain binary values between 100 and 111. No damage occurs if this constraint
is violated, but results are undefined.
When inputs are configured as differential pairs, a reference to either analog input in a differential pair by
a sample slot implies a differential measurement on the pair. The details of single ended and differential
measurement are described in
Section 28.5.2.1, “Single-Ended Samples ” and Section 28.5.2.2,
“Differential Samples ”. Sample slots are disabled using the ADSDIS register.
IPSBAR
Offset: 0x19_0006 (ADLST1)
Access: read/write
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
SAMPLE3 SAMPLE2 SAMPLE1 SAMPLE0
W
Reset 0 0 1 1 0 0 1 0 0 0 0 1 0 0 0 0
Figure 28-6. Channel List 1 Register (ADLST1)
Table 28-7. ADLST1 Field Descriptions
Field Description
15 Reserved, should be cleared.
14–12
SAMPLE3
Sample input channel select 3. The settings for this field are given in Table 28-9 .
11 Reserved, should be cleared.
10–8
SAMPLE2
Sample input channel select 2. The settings for this field are given in Table 28-9 .
7 Reserved, should be cleared.
6–4
SAMPLE1
Sample input channel select 1. The settings for this field are given in Table 28-9 .
3 Reserved, should be cleared.
2–0
SAMPLE0
Sample input channel select 0. The settings for this field are given in Table 28-9 .
IPSBAR
Offset: 0x19_0008 (ADLST2)
Access: read/write
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
SAMPLE7 SAMPLE6 SAMPLE5 SAMPLE4
W
Reset 0 1 1 1 0 1 1 0 0 1 0 1 0 1 0 0
Figure 28-7. Channel List 2 Register (ADLST2)
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MCF52235CVM60