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Author Topic: Minimig PCB run - interest thread  (Read 99150 times)

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Offline ivier

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Re: Minimig PCB run - interest thread
« on: July 31, 2007, 05:39:13 AM »
hmm, could probably use PSRAMs... they are supposed to be as easy to interface as SRAM, but offer the capacity and price of SDRAM.

i personally like the idea of headers instead of ports, and would prefer a pre-assembled board (my soldering skills need more work, SMD is still out of reach for me).

A larger capacity FPGA would be nice, but not necessary.
the actual form factor, i don't care about, as long as it's still small.
I'd like at least an 020, but thats not really important for a first run.

All in all i definitely want to get one.
 

Offline ivier

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Re: Minimig PCB run - interest thread
« Reply #1 on: August 11, 2007, 12:33:27 AM »
Quote

JimS wrote:
For the USB interface, how about the Vinculum chip? It has it's own CPU that runs a USB host stack. Interface is via either a UART, SPI or FIFO. I believe there's a spare SPI on the Minimig...


That chip looks quite useful. From my scan thru of the data sheet, it could allow access to USB mass storage devices, USB mice and keyboards, and perhaps more. All with only 4 pins to interface it (in SPI mode).

The one thing that gets me though, is it claims USB 2.0, but is only capable of 12Mb/s. That makes it USB 1.1 not 2.0, not that it matters much since the CPU can't handle USB 2.0.