Dma Stream X Memory 0 Address Register (Dma_Sxm0Ar) (X = 0; Dma Stream X Memory 1 Address Register (Dma_Sxm1Ar) (X = 0 - ST STM32F40 Series Reference Manual

DMA controller (DMA)
15 14 13
rw rw rw
Bits 31:0 PAR[31:0]: Peripheral address
Base address of the peripheral data register from/to which the data will be read/written.
These bits are write-protected and can be written only when bit EN = '0' in the DMA_SxCR register.
9.5.8

DMA stream x memory 0 address register (DMA_SxM0AR) (x = 0..7)

Address offset: 0x1C + 0x18 × stream number
Reset value: 0x0000 0000
31 30 29
rw rw rw
15 14 13
rw rw rw
Bits 31:0 M0A[31:0]: Memory 0 address
Base address of Memory area 0 from/to which the data will be read/written.
These bits are write-protected. They can be written only if:
9.5.9

DMA stream x memory 1 address register (DMA_SxM1AR) (x = 0..7)

Address offset: 0x20 + 0x18 × stream number
Reset value: 0x0000 0000
31 30 29
rw rw rw
15 14 13
rw rw rw
Bits 31:0 M1A[31:0]: Memory 1 address (used in case of Double buffer mode)
243/1422
12 11 10 9
rw rw rw rw
28 27 26 25
rw rw rw rw
12 11 10 9
rw rw rw rw
– the stream is disabled (bit EN= '0' in the DMA_SxCR register) or
– the stream is enabled (EN='1' in DMA_SxCR register) and bit CT = '1' in the
DMA_SxCR register (in Double buffer mode).
28 27 26 25
rw rw rw rw
12 11 10 9
rw rw rw rw
Base address of Memory area 1 from/to which the data will be read/written.
This register is used only for the Double buffer mode.
These bits are write-protected. They can be written only if:
– the stream is disabled (bit EN= '0' in the DMA_SxCR register) or
– the stream is enabled (EN='1' in DMA_SxCR register) and bit CT = '0' in the
DMA_SxCR register.
Doc ID 018909 Rev 4
8 7 6 5
PAR[15:0]
rw rw rw rw
24 23 22 21
M0A[31:16]
rw rw rw rw
8 7 6 5
M0A[15:0]
rw rw rw rw
24 23 22 21
M1A[31:16]
rw rw rw rw
8 7 6 5
M1A[15:0]
rw rw rw rw
4 3 2 1
rw rw rw rw
20 19 18 17
rw rw rw rw
4 3 2 1
rw rw rw rw
20 19 18 17
rw rw rw rw
4 3 2 1
rw rw rw rw
RM0090
0
rw
16
rw
0
rw
16
rw
0
rw