how to calculate the length register and the burst count port in DMA control manual

[Altera_Forum]

hello: 

when I read the DMA control manual provided by the altera.com,I came across a question.  According to the manual at page 3 "The master Read and Write port",it says "For example, if a 32-bit data width DMA is programmed for a word transfer of 64 bytes, the length registered is programmed with 64 and the burst count port will be 16. If a 64-bit data width DMA is programmed for a doubleword transfer of 8 bytes, the length register is programmed with 8 and the burst count port will be 1."  I can't understand the meaning of the above paragraph,can anyone help me?

[Altera_Forum]

Length register == number of bytes. 

Burst count == number of transfers of full bus width.  64 bytes (512 bits) on 32 bit bus: 512/32 = burst count of 16. 8 byte (64 bits) on 64 bit bus: 64/64 = burst count of 1.

[Altera_Forum]

--- Quote Start ---  Length register == number of bytes. Burst count == number of transfers of full bus width.  64 bytes (512 bits) on 32 bit bus: 512/32 = burst count of 16. 8 byte (64 bits) on 64 bit bus: 64/64 = burst count of 1.  --- Quote End ---   Matthias Wachter:  thank you very much,best wishes!