Samsung S5PC110, Manual

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S5PC110_UM 1 DMA CONTROLLER
1-2
1.1.1 KEY FEATURES OF DMA CONTROLLER
The key features of DMA Controller are listed below as reference for DMA and for writing DMA assembly code.
Key Features DMA_mem DMA_peri
Supports Data Size Up to double word (64-bit) Up to word (32-bit)
Word transfer: Up to 8 burst
Supports Burst Size Up to 16 burst
Byte or word transfer: Up to 16 burst
Supports Channel 8 channels at the same time 16 channels at the same time
Although each DMA module has 32 interrupt sources, only one interrupt is sent to Vectored Interrupt Controller
(VIC) for each DMA. To see the interrupt number of DMA, refer to the interrupt number table in Chapter,
“04.01.Interrupt Controller”. The software reads Interrupt Status (INTSTATUS) register for each module to check
whether an interrupt occurs.
Table 1-1 DMA Request Mapping Table
Module No. DMA Request Category Service Module
31 PCM2_TX
30
PCM2_RX
Audio
29 MSM_REQ3
28 MSM_REQ2
27 MSM_REQ1
26 MSM_REQ0
Others
25 PCM1_TX
24 PCM1_RX
23 PCM0_TX
22 PCM0_RX
by only DMA1
21
20
19 SPI1_TX
18 SPI1_RX
17 SPI0_TX
16 SPI0_RX
15 I2S2_TX
14 I2S2_RX
13 I2S1_TX
12 I2S1_RX
11 I2S0S_TX
10 I2S0_TX
Peri DMA1
9 I2S0_RX
Audio and SPI