Information

DACx_SR field descriptions (continued)
Field Description
0 The DAC buffer read pointer has not reached the watermark level.
1 The DAC buffer read pointer has reached the watermark level.
1
DACBFRPTF
DAC Buffer Read Pointer Top Position Flag
0 The DAC buffer read pointer is not zero.
1 The DAC buffer read pointer is zero.
0
DACBFRPBF
DAC Buffer Read Pointer Bottom Position Flag
0 The DAC buffer read pointer is not equal to C2[DACBFUP].
1 The DAC buffer read pointer is equal to C2[DACBFUP].
34.4.4 DAC Control Register (DACx_C0)
Address: 400C_C000h base + 21h offset = 400C_C021h
Bit 7 6 5 4 3 2 1 0
Read
DACEN DACRFS
DACTRGSE
L
0
LPEN DACBWIEN DACBTIEN DACBBIEN
Write
DACSWTRG
Reset
0 0 0 0 0 0 0 0
DACx_C0 field descriptions
Field Description
7
DACEN
DAC Enable
Starts the Programmable Reference Generator operation.
0 The DAC system is disabled.
1 The DAC system is enabled.
6
DACRFS
DAC Reference Select
0 The DAC selects DACREF_1 as the reference voltage.
1 The DAC selects DACREF_2 as the reference voltage.
5
DACTRGSEL
DAC Trigger Select
0 The DAC hardware trigger is selected.
1 The DAC software trigger is selected.
4
DACSWTRG
DAC Software Trigger
Active high. This is a write-only field, which always reads 0. If DAC software trigger is selected and buffer
is enabled, writing 1 to this field will advance the buffer read pointer once.
0 The DAC soft trigger is not valid.
1 The DAC soft trigger is valid.
3
LPEN
DAC Low Power Control
Table continues on the next page...
Chapter 34 12-bit Digital-to-Analog Converter (DAC)
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
Freescale Semiconductor, Inc.
Preliminary
797
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