threepointone
500+ Head-Fier
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- Sep 10, 2005
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Alright, I did a bit more research with the USB controller. If we want host capabilities (eventually, I don't mean in the first version of the software), we should probably try the ISP1761--according to its datasheet, the peripheral capabilities on the chip are the same as the ISP1582. The ISP1582 would need more work than a simple usb-to-ata bridge, but rockbox supports a player with that chipset so there's some example code to build on.
Or if we want to completely drop host capabilities from the first revision of the hardware, we can try looking at cypress' usb-to-ata bridges. Looking into their site, they've actually got a couple of more different models; I'm about to go to sleep now, but you'll want to look into the CY7C68301C, CY7C68320C, and CY7C68321C. They might not work, as I've just glanced at their specs so far. If someone wants to do some hunting, find a distributor that stocks CY7C68300C in reasonable multiples.
Argh, actually I did a quick digikey search and none of them are stocked by digikey and have a minimum quantity of at least 200 or so. Unless someone can find a good source, I think we're going to end up going for the ISP1761. A bit more work at first, but at least we'll be able to do usb host in the future.
Or if we want to completely drop host capabilities from the first revision of the hardware, we can try looking at cypress' usb-to-ata bridges. Looking into their site, they've actually got a couple of more different models; I'm about to go to sleep now, but you'll want to look into the CY7C68301C, CY7C68320C, and CY7C68321C. They might not work, as I've just glanced at their specs so far. If someone wants to do some hunting, find a distributor that stocks CY7C68300C in reasonable multiples.
Argh, actually I did a quick digikey search and none of them are stocked by digikey and have a minimum quantity of at least 200 or so. Unless someone can find a good source, I think we're going to end up going for the ISP1761. A bit more work at first, but at least we'll be able to do usb host in the future.