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Message
From: "John Paul Aguiling" <johnpaolo_a@e...>
Date: Sun, 6 Jan 2002 00:43:29 -0800
Subject: [usb] Re: usb-digest V1 #94
Hi to all of you out there. I am very interested with your discussion regarding USB issue. Are there any organizations that contribute to give free seminars and lectures here in the Philippines? I love to attend to this kind of events specially if it benefits a lot. I know reading is one but isn't it fun and adventurous if you are with the people of who are of the same interest? Well I will be waiting for the reply of members subscribe to the USB digest here in the Philippines. Thank You!
usb@o... wrote:
>
> usb@o... usb-digest V1 #94
>
>
>----------------------------------------------------------------------
>From: pueet@h...
>Date: Wed, 2 Jan 2002 17:08:18 +0100
>Subject: [usb] CYPRESS EZ-USB, not so EZ just confusing
>
>2.si Wed Jan 2 17:08:34 2002
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> for usb-list; Wed, 2 Jan 2002 17:08:34 +0100
>X-Authentication-Warning: iza.mr2.si: majordom set sender to owner-usb@o... using -f
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> for usb@o...; Wed, 2 Jan 2002 17:08:18 +0100
>Date: Wed, 2 Jan 2002 17:08:18 +0100
>Message-Id: <200201021608.RAA03831@i...>
>Subject: [usb] CYPRESS EZ-USB, not so EZ just confusing
>To: usb@o...
>From: pueet@h...
>Sender: owner-usb@o...
>Precedence: bulk
>Reply-To: usb@o...
>
>Hello Everyone, thank you so much for taking a look at this. i just had
>this project dumped on me and now I'm totally confused. we purshased
>some Cypress EZ-USB chips and I'm very new at this stuff. what I need
>to acomplish is to be able to plug in this chip into any USB on any
>computer that has the proper program on it, that we have to write, and
>it will recginize the chip and be ready to run the software. so where I'm
>stumped is the very begining how does the PC know when it is pluged in
>and how does the driver get installed. we also got a Development board
>with the chip on it already and when i first pluged it in with out me doing
>a thing it was installed. how do i get ours that stands alone to do that.
>I guess MY BIGGEST PROBLEM RIGHT NOW is how do i communicate with
>it? how do i wirte a basic program to tell it to read a port or something
>simple like that? IF there is anyone out there that can help me out i
>would greatly aperciate it. Thank you so much for listening to me
>ramble. Have a great New Year!
>Thanks again,
>Justin
>
>
>----------------------------------------------------------------------
>From: Bob.Whelan@h...
>Date: Wed, 2 Jan 2002 16:55:11 +0000
>Subject: Re: [usb] CYPRESS EZ-USB, not so EZ just confusing
>
>I think you have a lot of reading to do.
>The usb chip has a 1K5 pull up on one of the D lines, D+ for full speed, D-
>for low speed, the pc detects this when you plug in your usb gizmo. Then
>the process of enumeration takes place, whereby your device describes to
>the host, using report descriptors, what interface it supports and how it
>will communicate.
>If the os has a driver that supports your device, it loads this driver.
>Most chip venders supply application software to do basic enumeration. Have
>a look at http://www.usb.org/, Site has a few examples of HID interface.
>Good luck,
>Bob.
>
>
>
> pueet@hotmail.
> com To: usb@o...
> Sent by: cc:
> owner-usb@open Subject: [usb] CYPRESS EZ-USB, not so
> cores.org EZ just confusing
>
>
> 01/02/2002
> 04:08 PM
> Please respond
> to usb
>
>
>
>
>
>
>Hello Everyone, thank you so much for taking a look at this. i just had
>this project dumped on me and now I'm totally confused. we purshased
>some Cypress EZ-USB chips and I'm very new at this stuff. what I need
>to acomplish is to be able to plug in this chip into any USB on any
>computer that has the proper program on it, that we have to write, and
>it will recginize the chip and be ready to run the software. so where I'm
>stumped is the very begining how does the PC know when it is pluged in
>and how does the driver get installed. we also got a Development board
>with the chip on it already and when i first pluged it in with out me doing
>
>a thing it was installed. how do i get ours that stands alone to do that.
>I guess MY BIGGEST PROBLEM RIGHT NOW is how do i communicate with
>it? how do i wirte a basic program to tell it to read a port or something
>simple like that? IF there is anyone out there that can help me out i
>would greatly aperciate it. Thank you so much for listening to me
>ramble. Have a great New Year!
>Thanks again,
>Justin
>
>
> This message is confidential and may contain privileged information. It
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>
>
>
>
>----------------------------------------------------------------------
>From: "kw@nie" <kwanie@p...>
>Date: Thu, 3 Jan 2002 10:43:11 +0800
>Subject: Re: [usb] CYPRESS EZ-USB, not so EZ just confusing
>
>Hi Justin,
>
>When a USB device is plug in, either D- (low speed), D+ (full speed) or both
>(high speed) will be pulled high. This lets the host PC knows that a device
>has been attached and what speed to communicate with it. During enumeration
>the host will collect the device's information and check if the appropriate
>driver has already been installed, otherwise host will search for the driver
>and install it (e.g. Windows will look inside C:\WINDOWS\INF for an .inf
>that matches). In the event that a suitable driver cannot be found then the
>host will require the user to provide the driver.
>
>I haven't personally used the EZ-USB, but I was looking at it for a project
>previously. If I recall correctly, EZ-USB is defaulted as 'Firmware Update
>Sub-Class' device. When you first plug in the EZ-USB it will report itself
>as a 'Firmware Update Sub-Class' device, this should load the class driver
>for the 'Firmware Update Sub-Class' and your firmware is downloaded to the
>EZ-USB. After downloading it will re-enumaerate and this time round your
>firmware is to report the device infomation of your own so that your own
>driver can be loaded.
>
>Cheers,
>kwanie
>
>
>
>----- Original Message -----
>From: <pueet@h...>
>To: <usb@o...>
>Sent: Thursday, January 03, 2002 12:08 AM
>Subject: [usb] CYPRESS EZ-USB, not so EZ just confusing
>
>
>> Hello Everyone, thank you so much for taking a look at this. i just had
>> this project dumped on me and now I'm totally confused. we purshased
>> some Cypress EZ-USB chips and I'm very new at this stuff. what I need
>> to acomplish is to be able to plug in this chip into any USB on any
>> computer that has the proper program on it, that we have to write, and
>> it will recginize the chip and be ready to run the software. so where I'm
>> stumped is the very begining how does the PC know when it is pluged in
>> and how does the driver get installed. we also got a Development board
>> with the chip on it already and when i first pluged it in with out me
>doing
>> a thing it was installed. how do i get ours that stands alone to do that.
>> I guess MY BIGGEST PROBLEM RIGHT NOW is how do i communicate with
>> it? how do i wirte a basic program to tell it to read a port or something
>> simple like that? IF there is anyone out there that can help me out i
>> would greatly aperciate it. Thank you so much for listening to me
>> ramble. Have a great New Year!
>> Thanks again,
>> Justin
>>
>>
>
>
>
>
>----------------------------------------------------------------------
>From: Jecel Assumpcao Jr <jecel@m...>
>Date: Fri, 4 Jan 2002 18:42:46 -0500
>Subject: Re: [usb] host controller transceiver?
>
>On Sunday 30 December 2001 04:28, Amey Hegde wrote:
>> There is no problem in implementing it on FPGA.
>
>Ok.
>
>> Are u going in for a 8bit(60MHz) or a 16 bit (30MHz) interface for
>> the EHCI ? If u r planning a 8 bit interface then please check if the
>> timings are meeting early in the development phase..
>
>Since I will use a Virtex II, I don't think a 60 MHz interface will be
>much of a problem. But saving a few pins could be important.
>
>Steven Grunza had a very interesting idea - if you add a USB 2.0 hub
>chip to the motherboard then the FPGA would only need a high speed
>interface to talk to its upstream port and any of the transceivers I
>looked at would do just fine.
>
>But in that case it might be more cost effective for me to use
>something like the Philips ISP1561 PCI Host Controller+Hub and replace
>the USB 2.0 core in the FPGA with a PCI one. Not as much fun, but if I
>replace two other i/o chips with PCI versions I might end up saving
>pins (and CLBs in the FPGA).
>
>-- Jecel
>
>
>----------------------------------------------------------------------
>End of usb-digest V1 #94
>-
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