PXD10RM Datasheet, PDF (137/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

5.4.2 Control logic registers
5.4.2.1 Main Configuration Register (MCR)
The Main Configuration Register (MCR) provides configuration settings for the ADC.
Address: Base + 0x0000
Access: User read/write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0000
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R0 0 0 0 0 0 0
0000
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Figure 5-5. Main Configuration Register (MCR)
Table 5-7. Main Configuration Register (MCR) field descriptions
Bit
Description
0
OWREN: Overwrite enable
This bit enables or disables the functionality to overwrite unread converted data.
0 Prevents overwrite of unread converted data; new result is discarded
1 Enables converted data to be overwritten by a new conversion
1
WLSIDE: Write left/right-aligned
0 The conversion data is written right-aligned.
1 Data is left-aligned (from 15 to (15 – resolution + 1)).
2
MODE: One Shot/Scan
0 One Shot Mode—Configures the normal conversion of one chain.
1 Scan Mode—Configures continuous chain conversion mode; when the programmed chain
conversion is finished it restarts immediately.
3
EDGLEV: Edge or level selection for external start trigger
0 Edge configuration for external trigger usage.
1 Level configuration for external trigger usage.
4
TRGEN: External trigger enable. This bit must be set to use external triggering to start a conversion.
0 An external trigger cannot be used to start a conversion.
1 An external trigger can start a conversion.
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
5-15