dev builds
themes manual
device status forums
mailing lists
IRC bugs
dev guide

Rockbox mail archive

Subject: Re: USB On-The-Go (OTG) (was: Re: 2nd ATA Device on JB20 Recorder)
From: Linus Nielsen Feltzing (
Date: 2003-01-23

On 23 Jan 2003 11:59:57 +0000, Joaquim Carvalho wrote:
> We must check: - if there are physical limitations on the USB chips
> ie - no way to power the VBUS, etc. - ways to solve these
> limitations A simple 50cents smd transistor controlled by the H1
> would solve this.

Have you read the data sheets for the ISDx00 chips? I can't see
anything in those data sheets that offer any CPU control over the USB

> - How much of the USB control can be done in software Most hackers
> will find this quite an interesting job, most programmers would
> hate.

Once again, have you read the data sheets?


Linus Nielsen Feltzing, on 2003-01-23

Page was last modified "Jan 10 2012" The Rockbox Crew