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IXP400 Software
Access-Layer Components: DMA Access Driver (IxDmaAcc) API
Programmer’s Guide IXP400 Software Version 2.0 April 2005
Document Number: 252539, Revision: 007 121
8.7.7 Supported Modes
This section summarizes the transfer modes supported by the IxDmaAcc. Some of the supported
modes have restrictions. For details on restrictions, see “Restrictions of the DMA Transfer” on
page 127.
Table 14. DMA Modes Supported for Addressing Mode of Incremental Source Address and
Incremental Destination Address
Increment
Source
Address
Increment
Destination
Address
Transfer Mode
Transfer Width
Source
Transfer Width
Destination
Copy Only
Copy and
Clear
Copy and
Bytes
Swapping
Copy and
Bytes Reverse
8-bit 8-bit Supported Supported Supported Supported
8-bit 16-bit Supported Supported Supported Supported
8-bit 32-bit Supported Supported Supported Supported
8-bit Burst Supported Supported Supported Supported
16-bit 8-bit Supported Supported Supported Supported
16-bit 16-bit Supported Supported Supported Supported
16-bit 32-bit Supported Supported Supported Supported
16-bit Burst Supported Supported Supported Supported
32-bit 8-bit Supported Supported Supported Supported
32-bit 16-bit Supported Supported Supported Supported
32-bit 32-bit Supported Supported Supported Supported
32-bit Burst Supported Supported Supported Supported
Burst 8-bit Supported Supported Supported Supported
Burst 16-bit Supported Supported Supported Supported
Burst 32-bit Supported Supported Supported Supported
Burst Burst Supported Supported Supported Supported