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Altera_Forum
Honored Contributor I
855 Views

Altera msgdma busy doesn't complete operation

Description of IP core enabled, 

 

standard descriptor 128bit 

no response port 

 

After initiating transfer by writing descriptor control bit 

 

1) MSGDMA been software reset  

2) Read CSR status value - 0x10 (FIFO empty) 

3) csr control register value - 0x10 (Interrupt enable) 

4) slave descriptor Control set to - 80ff6000 (Go Bit | Transfer complete IRQ + bits16-23enabled) 

 

After transfer starts 

csr status value changes from 0x10 to 0x11 saying it is busy however transfer doesn't complete and even  

csr read fill level - 0x0 

csr response fill level - 0x0 

 

Destination and source address atleast 8bytes (double word) aligned 

Copy size is also is around 0x60 which is also aligned size. 

 

Please suggest what I am doing wrong or what else to try out for successful DMA transmission.
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Altera_Forum
Honored Contributor I
65 Views

Hi, 

 

What is the maximum rate msgdma can operate, can it function at 200MhZ or is there any limitation on clock rate ?
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