Hi Folks, Any inputs regarding interfacing USB1.1 with ARM Core(7TDMI) using AMBA AHB/APB 2.0 Specification?? Your help will be greatly appreciated.
USB interface With AMBA AHB
Started by ●June 2, 2005
Reply by ●June 2, 20052005-06-02
Hello Joe, Have a look at USB core of synopsys. Their USB core has AHB interface. You should be more specific about what are you looking for then only i can clarify ur doubt. Regards Praveen
Reply by ●June 2, 20052005-06-02
Joe wrote:> Hi Folks, > > Any inputs regarding interfacing USB1.1 with ARM Core(7TDMI) > using AMBA AHB/APB 2.0 Specification?? Your help will be greatly > appreciated.Please take a look at our USB IP Cores as well (www.asics.ws), we have USB 1.1 and USB 2.0 Device and OTG IP Cores. All of our IPs support AHB, OPB, AVALON, PLB, OCP, WISHBONE and many custom buses as well. Best Regards, rudi ============================================================= Rudolf Usselmann, ASICS World Services, http://www.asics.ws Your Partner for IP Cores, Design, Verification and Synthesis
Reply by ●June 4, 20052005-06-04
Hi Rudolf and Prasannakumar, Thanks for your reply. Let me put my question like this. In my USB core i have so many interfacing signals which are interfacing with the ARM Processor and the external world (D+ and D- etc...). What i would like to know is how to handle all these interfacing signals with AMBA AHB/APB, and is there any reference document which describes the timing issues between the USB core and AHB Bus signals according to AMBA Specification 2.0. Regards... Joe Rudolf Usselmann wrote:> Joe wrote: > > > Hi Folks, > > > > Any inputs regarding interfacing USB1.1 with ARM Core(7TDMI) > > using AMBA AHB/APB 2.0 Specification?? Your help will be greatly > > appreciated. > > Please take a look at our USB IP Cores as well (www.asics.ws), > we have USB 1.1 and USB 2.0 Device and OTG IP Cores. All of our > IPs support AHB, OPB, AVALON, PLB, OCP, WISHBONE and many custom > buses as well. > > Best Regards, > rudi > ============================================================= > Rudolf Usselmann, ASICS World Services, http://www.asics.ws > Your Partner for IP Cores, Design, Verification and Synthesis
Reply by ●June 4, 20052005-06-04
Joe wrote:> Hi Rudolf and Prasannakumar, > > Thanks for your reply. Let me put my question like this. In my USB > core i have so many interfacing signals which are interfacing with the > ARM Processor and the external world (D+ and D- etc...). What i would > like to know is how to handle all these interfacing signals with AMBA > AHB/APB, and is there any reference document which describes the timing > issues between the USB core and AHB Bus signals according to AMBA > Specification 2.0. > > Regards... > JoeThere is no easy/simple answer for you question. It boils down to understand what all those signals do and how to drive them. For example it took us more than two man-years to design a fully verified and functional AHB USB controller. So please don't expect to solve this problem in a few emails to a news group ! Best solution for you would be to either purchase a USB IP Core or use an external device for USB interface. Best Regards, rudi ============================================================= Rudolf Usselmann, ASICS World Services, http://www.asics.ws Your Partner for IP Cores, Design, Verification and Synthesis
Reply by ●June 6, 20052005-06-06
Hey, I have USB1.1 hard IP and i want to interface this with ARM processor using AMBA AHB Specification 2.0 for high speed operation. The vendor of USB core is not supporting us becoz we have bought it long back. We have only USB datasheet nothing else. Now you please tell me is there any document to refer. Rgds... Joe
Reply by ●June 6, 20052005-06-06
"Joe" <joe.ricky@gmail.com> wrote in message news:1118033673.908813.128110@g43g2000cwa.googlegroups.com...> Hey, > > I have USB1.1 hard IP and i want to interface this with ARM > processor using AMBA AHB Specification 2.0 for high speed operation. > The vendor of USB core is not supporting us becoz we have bought it > long back. We have only USB datasheet nothing else. Now you please tell > me is there any document to refer. > > Rgds... > Joe >dude what information are u looking for? The AMBA spec is readily available from ARM website. Whose USB core are u trying to implement? If u are asking for doumenation for that ... would you not have received that with the IP .. even if it was a long time ago. Does the USB core have an AMBA interface? Or is the interface something else that you want to modify to connect to an AMBA bus? What is the interface? We need more detail if we are going to help you. Mike
Reply by ●June 6, 20052005-06-06
What i would like to know is how to interface USB1.1 which is having non-AHB interfacing signals, which is working at fullspeed (12Mhz) with ARM processor which is operating at 25 MHz usign AMBA 2.0 specification. --Joe Mike Lewis wrote:> dude what information are u looking for? The AMBA spec is readily available > from ARM website. Whose USB core are u trying to implement? If u are asking > for doumenation for that ... would you not have received that with the IP .. > even > if it was a long time ago. > > Does the USB core have an AMBA interface? Or is the interface something else > that > you want to modify to connect to an AMBA bus? What is the interface? > > We need more detail if we are going to help you. > > Mike
Reply by ●June 6, 20052005-06-06
"Joe" <joe.ricky@gmail.com> wrote in message news:1118081603.893628.136300@g49g2000cwa.googlegroups.com...> What i would like to know is how to interface USB1.1 which is > having non-AHB interfacing signals, which is working at fullspeed > (12Mhz) with ARM processor which is operating at 25 MHz usign AMBA 2.0 > specification. > > --Joe > > > > Mike Lewis wrote: >> dude what information are u looking for? The AMBA spec is readily >> available >> from ARM website. Whose USB core are u trying to implement? If u are >> asking >> for doumenation for that ... would you not have received that with the IP >> .. >> even >> if it was a long time ago. >> >> Does the USB core have an AMBA interface? Or is the interface something >> else >> that >> you want to modify to connect to an AMBA bus? What is the interface? >> >> We need more detail if we are going to help you. >> >> Mike >how can I possibly answer that without knowing what interface you do have? What are the non-AHB signals? I'm a good designer but not that good! Mike
Reply by ●June 7, 20052005-06-07