ST STM32L4+ Series Reference Manual page 747

RM0432
Bit 16 EN2: DAC channel2 enable
This bit is set and cleared by software to enable/disable DAC channel2.
0: DAC channel2 disabled
1: DAC channel2 enabled
Note: These bits are available only on dual-channel DACs. Refer to
Bit 15 HFSEL: High frequency interface mode enable
This bit is set and cleared by software to enable/disable DAC interface high speed mode
This bit need to be set when APB1 clock frequency is higher than 80 MHz.
0: High frequency interface mode disabled
1: High frequency interface mode enabled
Bit 14 CEN1: DAC channel1 calibration enable
This bit is set and cleared by software to enable/disable DAC channel1 calibration, it can be
written only if bit EN1=0 into DAC_CR (the calibration mode can be entered/exit only when
the DAC channel is disabled) Otherwise, the write operation is ignored.
0: DAC channel1 in Normal operating mode
1: DAC channel1 in calibration mode
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
Only used if bit TEN1 = 1 (DAC channel1 trigger enabled).
implementation.
RM0432 Rev 6
Digital-to-analog converter (DAC)
Section 22.3: DAC
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