Key Features Of Dma Controller - Samsung S5PC110 Manual

S5PC110_UM

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
Supports Data Size
Supports Burst Size
Supports Channel
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.
Module
Peri DMA1
DMA_mem
Up to double word (64-bit)
Up to 16 burst
8 channels at the same time
Table 1-1
No. DMA Request
31 PCM2_TX
30 PCM2_RX
29 MSM_REQ3
28 MSM_REQ2
27 MSM_REQ1
26 MSM_REQ0
25 PCM1_TX
24 PCM1_RX
23 PCM0_TX
22 PCM0_RX
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
9 I2S0_RX
DMA Request Mapping Table
1 DMA CONTROLLER
DMA_peri
Up to word (32-bit)
Word transfer: Up to 8 burst
Byte or word transfer: Up to 16 burst
16 channels at the same time
Category
Audio
Others
Audio and SPI
Service Module
by only DMA1
1-2