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| 型号： | DMA-MC-XP-N2 |
| 厂商： | Lattice Semiconductor Corporation |
| 文件页数： | 22/28页 |
| 文件大小： | 0K |
| 描述： | IP CORE MCDMA CTLR XPGA ISPXPGA |
| 标准包装： | 1 |
| 系列： | * |
| 其它名称： | DMAMCXPN2 |
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Lattice Semiconductor
Table 15. Channel Control Register – Non-8237 Mode
Bit
Multi-Channel DMA Controller User’s Guide
Description
0
1
2
0
1
0
1
0
1
Clear Request bit
Set Request bit
Channel unmasked
Channel masked
Auto Initialization disable
Auto Initialization enable
Register Address Map
The 8237 and non-8237 modes of the MCDMA Controller decode and use different numbers of ain bit input sig-
nals. The ain signal is used for mapping the register address and decoding software command.
Table 16. Register Address Map and Software Command of 8237 Mode
Write
Read
ain3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ain2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ain1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ain0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Channel
0
1
2
3
X
X
X
X
X
X
X
X
iorin_n = 1, iowin_n = 0
Base and current Address reg
Base and current Word Count reg
Base and current Address reg
Base and current Word Count reg
Base and current Address reg
Base and current Word Count reg
Base and current Address reg
Base and current Word Count reg
Command Register
Single Request bit command
Single Mask bit command
Mode Register
Clear Byte Pointer command
Master clear command
Clear Mask Register command
Mask register
iorin_n = 0, iowin_n = 1
Current DMA address reg
Current Word Count reg
Current DMA address reg
Current Word Count reg
Current DMA address reg
Current Word Count reg
Current DMA address reg
Current Word Count reg
Read Status Register
Illegal
Illegal
Illegal
Illegal
Read temporary reg
Illegal
Illegal
In the 8237 mode, the additional software commands are: Clear Byte Pointer, Master Clear and Clear Mask Regis-
ter.
Table 17. Register Address Map and Software Command of Non-8237 Mode
Write: iorin_n = 1, iowin_n = 0
ain2
0
0
0
0
1
1
1
1
ain1
0
0
1
1
0
0
1
1
ain0
0
1
0
1
0
1
0
1
Read: iorin_n = 0, iowin_n = 1
Command register
Source Address register
Word Count register
Destination Address register
Mode register
Channel Control register
Master Clear command
Clear Byte Pointer command
22
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| DMA-SG-E3-U1 | 功能描述:开发软件 DMA Scatter/Gather RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
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| DMA-SG-P2-U1 | 功能描述:开发软件 DMA Scatter/Gather RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| DMA-SG-P2-UT1 | 功能描述:开发软件 DMA SCATTER/GATHER RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
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