Dac Registers; Dac Control Register (Dac_Cr) - STMicroelectronics RM0365 Reference Manual

Digital-to-analog converter (DAC1)
16.9

DAC registers

Refer to
The peripheral registers have to be accessed by words (32-bit).
16.9.1

DAC control register (DAC_CR)

Address offset: 0x00
Reset value: 0x0000 0000
31 30 29
Res. Res. Res. Res.
15 14 13
DMAU DMA
Res. Res.
DRIE1 EN1
rw
Bits 31:14 Reserved, must be kept at reset value.
Bit 13 DMAUDRIE1: DAC channel1 DMA Underrun Interrupt enable
This bit is set and cleared by software.
0: DAC channel1 DMA Underrun Interrupt disabled
1: DAC channel1 DMA Underrun Interrupt enabled
Bit 12 DMAEN1: DAC channel1 DMA enable
This bit is set and cleared by software.
0: DAC channel1 DMA mode disabled
1: DAC channel1 DMA mode enabled
Bits 11:8 MAMP1[3:0]: DAC channel1 mask/amplitude selector
These bits are written by software to select mask in wave generation mode or amplitude in
triangle generation mode.
0000: Unmask bit0 of LFSR/ triangle amplitude equal to 1
0001: Unmask bits[1:0] of LFSR/ triangle amplitude equal to 3
0010: Unmask bits[2:0] of LFSR/ triangle amplitude equal to 7
0011: Unmask bits[3:0] of LFSR/ triangle amplitude equal to 15
0100: Unmask bits[4:0] of LFSR/ triangle amplitude equal to 31
0101: Unmask bits[5:0] of LFSR/ triangle amplitude equal to 63
0110: Unmask bits[6:0] of LFSR/ triangle amplitude equal to 127
0111: Unmask bits[7:0] of LFSR/ triangle amplitude equal to 255
1000: Unmask bits[8:0] of LFSR/ triangle amplitude equal to 511
1001: Unmask bits[9:0] of LFSR/ triangle amplitude equal to 1023
1010: Unmask bits[10:0] of LFSR/ triangle amplitude equal to 2047
≥ 1011: Unmask bits[11:0] of LFSR/ triangle amplitude equal to 4095
Bits 7:6 WAVE1[1:0]: DAC channel1 noise/triangle wave generation enable
These bits are set and cleared by software.
00: Wave generation disabled
01: Noise wave generation enabled
1x: Triangle wave generation enabled
Note: Only used if bit TEN1 = 1 (DAC channel1 trigger enabled).
401/1080
Section 2.1 on page 42
28 27 26 25
Res.
12 11 10 9
MAMP1[3:0]
rw rw rw rw
for a list of abbreviations used in register descriptions.
24 23 22
Res.
8 7 6
WAVE1[1:0]
rw rw rw
DocID025202 Rev 7
21 20 19 18
Res. Res.
5 4 3 2
TSEL1[2:0] TEN1
rw rw rw rw
RM0365
17 16
Res. Res.
1 0
BOFF1 EN1
rw rw