各位好,我看到EDMA3的OPT选项里有一个源地址和目的地址的固定地址模式,想问一下,我的DSP通过emif的一个地址与FPGA端的一个FIFO连接,我看到这个固定地址模式取决于外设是否支持地址固定模式,就想问一下,EMIF这个接口是不是可以支持的?
感谢各位!
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各位好,我看到EDMA3的OPT选项里有一个源地址和目的地址的固定地址模式,想问一下,我的DSP通过emif的一个地址与FPGA端的一个FIFO连接,我看到这个固定地址模式取决于外设是否支持地址固定模式,就想问一下,EMIF这个接口是不是可以支持的?
感谢各位!
把FPGA作为FIFO用的话,需要把SAM/DAM设成const mode,但c6657 EDMA除了VCP/TCP外,是不支持其他外设的const mode的。
The EDMA supports two addressing modes: constant addressing and increment addressing mode. Constant addressing mode is applicable to a very limited set of use cases. For most applications, increment mode must be used. On the C665x, the EDMA can use constant addressing mode only with the Enhanced Viterbi-Decoder Coprocessor (VCP) and the Enhanced Turbo Decoder Coprocessor (TCP). Constant addressing mode is not supported by any other peripheral or internal memory in the device. Increment mode is supported by all peripherals, including VCP and TCP.
www.ti.com/.../tms320c6657.pdf