AD535 | BIOS | Booting | Bootloader | C621 | C6211 | C6415 | C671 | C6711 | C6711DSK | C6713 | CCS | Chassaing | COFF | DAT | DM64 | DM642 | DMA | DSK671 | DSK6711 | EDM | EDMA | EMIF | Emulator | EVM | EVM620 | FFT | FIR | GPIO | Halting | HPI | HWI | IDK | JTAG | LDB | LDH | LDW | Linker | LMS | LOG_printf | Matlab | McBSP | MEM_alloc | MIPS | PCI | PCM3003 | Pipeline | Profiling | QDM | Reset | ROM | RTDX | Sampling | SDRAM | Stack | TEB | THS1206 | TMS320C621 | TMS320C6416 | TMS320C6711 | TMS320C6713 | UART | Vector Table | XBUS | XDS560

Dear c6x: I have a question about XBUS of 6202. I use XBUS as asynchronous I/O. From the peripherals refrerence Guide I know i must use DMA to access the XBUS. But I can not access it. When i set the DMA destenation address as 0x80000000, it work well. But when i change the destenation address to 0x50000000(the XCE1 space begin adrress), it do not work. I have check the DAM regester. the DMA stat bit is 01, and the DMA start bit also is 01. This says that the DMA is running or waiting something. I also check the XBUS global control register, the bit 11 is 1,that says that the internal arbiter is enable. and the DSP own the BUS. By the way, i left the XHOLD pin and XHLODA pin float. I think if i use the internal arbiter mode, the two pin is unimportant. Best Regards Jun.Zhou 2003-03-28

(You need to be a member of c6x -- send a blank email to c6x-subscribe@yahoogroups.com )