C6711 PCI TRANSFER SPEEDS (typical with Labview - large overhead)

Test Conditions:
	Athlon TBird 1.2 GHz, 512 MB RAM
	C6711PCI using 3.3v from PCI slot (not regulator)

NOTE: 
1) all read/write references are see seen by the host.
2) "read" means host read, DSP write.
3) "Sustained" means constant throughput, NOT burst.
4) MDwords refers to a 32 bit word or 4 Bytes.


Test Results: (msec / 512000 DWords)

	Note: 
	(A): No checks, DSP DMA direct to DSP memory
	(B): No checks, DSP DMA to CE3 first then copy to prevent cache coherency
	(C): FIFO status checks, DSP DMA to CE3 first then copy to prevent cache coherency

	comm mode		(A)		(B)		(C)
				write	read	write	read	write	read
	2(Host Target, DSP IO)	306	528	318	541	548	541
	3(Host DMA, DSP IO)	278	113	292	128	521	370
	4(Host Target, DSP DMA)	171	535	252	542	250	541
	5(Host DMA, DSP DMA)	100	103	190	112	190	112


Sustained Speed limits: (msec per 512000 DWords)
	Host Target 
		write to FIFO: 	171	(direct to DSP memory)
		write to FIFO: 	250	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	528
	Host DMA 
		write to FIFO: 	100	(direct to DSP memory)
		write to FIFO: 	190	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	103
	DSP IO
		write to FIFO: 	278	(FIFO status not checked)
		write to FIFO: 	521	(FIFO status checked)
		read from FIFO:	113	(FIFO status not checked)
		read from FIFO:	370	(FIFO status checked)
	DSP DMA 
		write to FIFO: 	100	(direct to DSP memory)
		write to FIFO: 	190	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	103		

Sustained Speed limits: (MDWords per second)
	Host Target 
		write to FIFO: 	2.99 (11.96MB/sec)	(direct to DSP memory)
		write to FIFO: 	2.05 (8.2MB/sec)	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	0.97 (3.88MB/sec)
	Host DMA 
		write to FIFO: 	5.12 (20.48MB/sec)	(direct to DSP memory)
		write to FIFO: 	2.69 (10.76MB/sec)	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	4.97 (19.88MB/sec)
	DSP IO
		write to FIFO: 	1.84 (7.36MB/sec)	(FIFO status not checked)
		write to FIFO: 	0.98 (3.92MB/sec)	(FIFO status checked)
		read from FIFO:	4.53 (18.12MB/sec)	(FIFO status not checked)
		read from FIFO:	1.38 (5.52MB/sec)	(FIFO status checked)
	DSP Synchronous DMA
		write to FIFO: 	5.12 (20.48MB/sec)	(direct to DSP memory)
		write to FIFO: 	2.69 (10.76MB/sec)	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	4.97 (19.88MB/sec)
	DSP Asynchronous DMA
		write to FIFO: 	7.52 (30.08MB/sec)	(direct to DSP memory)
		write to FIFO: 	4.25 (17.0MB/sec)	(first to CE3, then copy to prevent cache coherency)
		read from FIFO:	7.49 (29.96MB/sec)

