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Let me know if you need a schematic. I’m checking right now. I’ve also been thinking about multiplexing two of the I2S outputs and using a cheap uC or preferably some digital logic to take care of putting the signal back together, but I’m probably just asking for trouble with that. Share This Page Tweet. A bit isl1761 work at first, but at least we’ll be able to do usb host in the isp11761.
If it turns out to be not too difficult, there is a possibility that FLAC decoding will also be in the first version, or maybe even rockbox. Jul 2, at 9: Post 82 of Post 79 of I might see if freescale will provide sample code for the ips1761 bootloader, since there’s almost no documentation on their site on it other than one or two pages in the datasheet.
Jul 13, at 1: 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.
NIOS II + USB 2.0 host
Jun 29, at 5: Adapting SPI might also be a possibility, though I think it might take too much processor time. Post 90 of I have done a list of the main components not the resistor, connector, jumper, capacitor The host datashset is usefull if you want to connect a Portable player to the Dap without the need of a PC. You must log in or sign up to reply here.
The SCF has no built-in flash memory, if I’m not mistaken. The SCF can be booted in one of datazheet modes: Fiber Optic Transmitter-Receiver U8: That was over a year ago that I was researching this, though, so things might have changed.
I’m still thinking about whether or not we should base the USB on a chip that’s capable of USB host and do the isp11761 for host functionality later or if we should just use a plain USB peripheral controller and require a new board for USB host functionality. Since this will be programmable by replacing a firmware file on the hard drive or possibly some other meanswe can easily release a more advanced firmware for the DAP later on without any modification to the isp17761.
LKML: Laurent Pinchart: Re: [PATCH v2] usb: isp add peripheral/device controller chip id
BTW, I’ve split the audio hardware design section to another thread. Do you already have an account? Personally I don’t think bit and bit have much of a difference iirc the noise floor of almost all systems is higher than what bit can resolvebut it would have been better if it were bit.
I take a close look to the evaluation board MC3 and the Audio daughter board. I would use a CPLD however, they are not as bad as you think. We just need to clean it up and find some alternative chips. It’s not too difficult to create a mass storage device.
Jun 29, at The first version of the firmware indeed will probably be something really simple, maybe just a WAV decoder.
Argh, actually I did a quick digikey search and none of them are stocked by digikey and have a minimum quantity of at least or so. Thanks, I’ll look into the evaluation datqsheet be useful to look at for our design.
The ISP is probably your safest bet however. Jul 13, at 5: Jul 1, at 3: Post 89 of I’ll do another thread for the audio section.
Uclinux can run xatasheet the MC3.
USB OTG On-The-Go Embedded ARM ColdFire Atmel NXP ISP Freescale
Post 81 of I’d rather not have to put a programmable logic device to do that. Post 77 of If we want host capabilities eventually, I don’t mean in the dataxheet version of the softwarewe should probably try the ISPaccording to its datasheet, the peripheral capabilities on the chip are the same as the ISP Post 76 of The ISP 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.
It’s going to be painfully slow transferring music onto the DAP. No, create an account now. Unless someone can find a good source, I think we’re going to end up going for the ISP Jul 4, at 1: