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Message
From: a.zaretsky@z...<a.zaretsky@z...>
Date: Fri Nov 26 13:40:00 CET 2004
Subject: [usb] Enumeration...
----- Original Message -----
From: info@s...<info@s...>
To:
Date: Wed Nov 17 11:59:38 CET 2004
Subject: [usb] Enumeration...
> hello,
> now i got the USB1.1 function core working with the SMSC GT3200
PHY
> chip. (little changings in usb1_utmi_if.v and usb_pa.v, because the
> tx-
> ready signals have different length)
> but windows dont accepts the enumeration :-(
> it asks for 64Byte device-descriptor, but since this is only 18Byte
> long, i
> am sending these 18 bytes (the original usb1_ctrl.v does so)
> after PC had recieved these 18 bytes it sends again an IN-Token, to
> wich the fpga replies with Zero-length-packet.
> a lot of miliseconds later the PC sets an USB-RESET and asks again
> for
> 64 byte device-descriptor...
> this repeats 3 times.. then it stops...
> what do i have to do?
> sending these 18 bytes only in packets a 8 byte?
> sending 64 bytes? wich bytes?
> or could it be, that my device-descriptor is wrong?
> 7'h00: dout <= #1 8'd18; // this descriptor length
> 7'h01: dout <= #1 8'h01; // descriptor type
> 7'h02: dout <= #1 8'h10; // USB version low byte
> 7'h03: dout <= #1 8'h01; // USB version high byte
> 7'h04: dout <= #1 8'hff; // device class
> 7'h05: dout <= #1 8'hff; // device sub class
> 7'h06: dout <= #1 8'hff; // device protocol
> 7'h07: dout <= #1 8'd64; // max packet size
> 7'h08: dout <= #1 8'h34; // vendor ID low byte
> 7'h09: dout <= #1 8'h12; // vendor ID high byte
> 7'h0a: dout <= #1 8'h78; // product ID low byte
> 7'h0b: dout <= #1 8'h56; // product ID high byte
> 7'h0c: dout <= #1 8'h10; // device rel. number low byte
> 7'h0d: dout <= #1 8'h00; // device rel. number high byte
> 7'h0e: dout <= #1 8'h00; // Manufacturer String Index
> 7'h0f: dout <= #1 8'h00; // Product Descr. String Index
> 7'h10: dout <= #1 8'h00; // S/N String Index
> 7'h11: dout <= #1 8'h01; // Number of possible config.
> thank you very much!
> best regards
> Suheel
>
>
I have got exactly the same problem.
Do you send the 18 bytes device descriptor in chunks of 8 bytes
packets?
I realised that you also should transmit the zero len packet after each 8
byte packet.
How do you send the last 2 bytes?
Do you receive the reset command from the host after sending the 1rst
8 bytes? Do you receive the SET_ADDRESS request?
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