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Message
From: <xgm77@s...>
Date: Sun, 11 Aug 2002 09:35:23 +0800 (CST)
Subject: [usb] =?GB2312?B?u9i4tDpSZTogW3VzYl0gaGk=?=
----- 原文 -----
From: Alexandre Gauthier
To: usb@o...
Subject: Re: [usb] hi
Sent: Sat Aug 10 22:00:37 CST 2002
> It gives something like that in low speed mode after bit stuffing and NRZI encoding :
>
> (IDLE) SYNC NOTPID-PID DEVICE ADDRESS ENDPOINT ADDRESS CRC5 SE0 JSTATE (IDLE)
> 01010100 0111 0010 1010101 0101 01011
>
> Since every obvious byte is right the problem must lie in the CRC5. I'm not sure I'm right on this particular one.
> You can use the usbf_crc5.v file in the USB 2.0 function core to generate your CRC5 look at usbf_pa.v or usbf_pd.v to know the exact input order
>
> ----- Original Message -----
> From: 光明 徐
> To: usb@o...
> Sent: Saturday, August 10, 2002 3:58 AM
> Subject: [usb] hi
>
>
> hi：Alexandre Gauthier
thank you for your answer,can you give me some explations for the following words:
usb 1.1 use compliant phys pass SYNC and EOP bits tto the core and use a serial line
for data reception and tansmission ,makeing the usb packets harder to correlate with the
wave form data.this is why my package is not received!!!
>
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>
> ------------------------------------------------------------------------------
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