Hi, you get that message if nothing but the speed-resistor is connected to the host. The host detects the presence of the resistor and thus expects a device to be present. It then tries to enumerate it and that fails.
You'd even get this message if you completely remove the FX2 from your PCB ... Till Am Samstag 16 Juni 2007 schrieb Stephan Esterhuizen: > I just finished a PCB design with the Cypress FX2LP (CY7C68013A-100AC). > When I plug the device into a linux box, I get "device not accepting > address" errors. > > Since this is such a simple interface: Power up FX2 and connect D+/D-/GND > to host controller, I suspect that the problem might be with my D- and D+ > traces, but would like other people's input. Please see below for dmesg > and usbmon output. > > I have a few questions: > > 1) I tried decoding the setup packets but it is not a 'standard device > request' but a 'class request', shouldn't it be the former or am I missing > something? > > 2) Is the fx2lp actually working? I suspect it is because according to > usbmon, the fx2lp responded to the first setup packet with: > > e89de2c0 1532923663 C Ci:001:00 0 4 = 01050100 > > 3) If the fx2lp is actually responding to usb requests, why is it not > accepting the address the host is trying to assign to it? > > I have a slew of other fx2lp devices which all work, this is the first > one that is on a custom PCB. When examining D-/D+ on a scope, things look > fine. > > Any insight will be greatly appreciated. > > ---------- dmesg ------------- > Jun 13 13:29:15 toga2 kernel: usb 1-1: device not accepting address 15, > error -71 > Jun 13 13:29:15 toga2 kernel: usb 1-1: new full speed USB device using > uhci_hcd and address 16 > Jun 13 13:29:15 toga2 kernel: usb 1-1: uhci_result_common: failed with > status 440000 > Jun 13 13:29:15 toga2 kernel: usb 1-1: uhci_result_common: failed with > status 440000 > Jun 13 13:29:15 toga2 kernel: usb 1-1: device not accepting address 16, > error -71 > Jun 13 13:29:15 toga2 kernel: hub 1-0:1.0: state 7 ports 2 chg 0000 evt > 0002 > ------------------------------ > > ---------- dmesg (high verbosity) ------------- > Jun 16 09:49:18 toga2 kernel: usb 1-1: uhci_result_common: failed with > status 440000 Jun 16 09:49:18 toga2 kernel: [f78f46c0] CTL QH link > (378f4422) element (37dd5240) Jun 16 09:49:18 toga2 kernel: urb_priv > [e37b4330] urb [f77ce1c0] qh [f78f46c0] Dev=0 EP=0(IN) CTL Actlen=0 Jun 16 > 09:49:18 toga2 kernel: 1: [f7dd5240] link (37dd51b0) e0 Stalled > CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0 Dev=0, PID=2d(SETUP) (buf=35e87d80) > Jun 16 09:49:18 toga2 kernel: 2: [f7dd51b0] link (37dd51e0) e3 SPD > Active Length=0 MaxLen=3f DT1 EndPt=0 Dev=0, PID=69(IN) (buf=37a53e80) Jun > 16 09:49:18 toga2 kernel: 3: [f7dd51e0] link (37dd5270) e3 IOC Active > Length=0 MaxLen=7ff DT1 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) Jun 16 > 09:49:18 toga2 kernel: Dummy TD > Jun 16 09:49:18 toga2 kernel: [f7dd5270] link (37dd51b0) e0 Length=0 > MaxLen=7ff DT0 EndPt=0 Dev=0, PID=e1(OUT) (buf=00000000) > > ------------------------------ > > --------- usbmon ------------- > f7dd8840 1483781836 C Ii:001:01 0 2 = 0200 > f7dd8840 1483781854 S Ii:001:01 -115 2 < > e89deac0 1483781878 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483781892 C Ci:001:00 0 4 = 01050100 > e89deac0 1483781897 S Co:001:00 s 23 01 0010 0001 0000 0 > e89deac0 1483781902 C Co:001:00 0 0 > e89deac0 1483781909 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483781913 C Ci:001:00 0 4 = 01050000 > e89deac0 1483813891 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483813900 C Ci:001:00 0 4 = 01050000 > e89deac0 1483845835 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483845843 C Ci:001:00 0 4 = 01050000 > e89deac0 1483877834 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483877841 C Ci:001:00 0 4 = 01050000 > e89deac0 1483909898 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483909906 C Ci:001:00 0 4 = 01050000 > e89deac0 1483909927 S Co:001:00 s 23 03 0004 0001 0000 0 > e89deac0 1483909933 C Co:001:00 0 0 > e89deac0 1483965835 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89deac0 1483966025 C Ci:001:00 0 4 = 00001000 > e89deac0 1483966030 S Co:001:00 s 23 01 0014 0001 0000 0 > e89deac0 1483966034 C Co:001:00 0 0 > e89deac0 1483966038 S Co:001:00 s 23 01 0001 0001 0000 0 > e89deac0 1483966042 C Co:001:00 0 0 > e89deac0 1483966050 S Co:001:00 s 23 01 0001 0001 0000 0 > e89deac0 1483966053 C Co:001:00 0 0 > > ------------------------- > > And as an example of what usbmon displays for another fx2 device that > works properly: > > --------- usbmon (development FX2, device works properly) ------------- > f7dd8840 1532923596 C Ii:001:01 0 2 = 0200 > f7dd8840 1532923618 S Ii:001:01 -115 2 < > e89de2c0 1532923647 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1532923663 C Ci:001:00 0 4 = 01050100 > e89de2c0 1532923667 S Co:001:00 s 23 01 0010 0001 0000 0 > e89de2c0 1532923674 C Co:001:00 0 0 > e89de2c0 1532923682 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1532923685 C Ci:001:00 0 4 = 01050000 > e89de2c0 1532955586 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1532955595 C Ci:001:00 0 4 = 01050000 > e89de2c0 1532987566 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1532987575 C Ci:001:00 0 4 = 01050000 > e89de2c0 1533019585 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1533019593 C Ci:001:00 0 4 = 01050000 > e89de2c0 1533051583 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1533051591 C Ci:001:00 0 4 = 01050000 > e89de2c0 1533051613 S Co:001:00 s 23 03 0004 0001 0000 0 > e89de2c0 1533051619 C Co:001:00 0 0 > e89de2c0 1533107573 S Ci:001:00 s a3 00 0000 0001 0004 4 < > e89de2c0 1533107803 C Ci:001:00 0 4 = 03051000 > e89de2c0 1533163585 S Co:001:00 s 23 01 0014 0001 0000 0 > e89de2c0 1533163594 C Co:001:00 0 0 > e89de2c0 1533163611 S Co:000:00 s 00 05 0030 0000 0000 0 > e89de2c0 1533163690 C Co:000:00 0 0 > e89de2c0 1533183595 S Ci:048:00 s 80 06 0100 0000 0008 8 < > e89de2c0 1533183701 C Ci:048:00 0 8 = 12010002 ffffff40 > e89de2c0 1533183712 S Ci:048:00 s 80 06 0100 0000 0012 18 < > e89de2c0 1533183823 C Ci:048:00 0 18 = 12010002 ffffff40 bb0f0100 02010102 > 0601 > e89de2c0 1533183844 S Ci:048:00 s 80 06 0200 0000 0009 9 < > e89de2c0 1533183948 C Ci:048:00 0 9 = 09023200 030100c0 00 > e89de2c0 1533183957 S Ci:048:00 s 80 06 0200 0000 0032 50 < > e89de2c0 1533184072 C Ci:048:00 0 50 = 09023200 030100c0 00090400 0000ffff > ff030904 010001ff ffff0407 05020200 > e89de2c0 1533184088 S Ci:048:00 s 80 06 0300 0000 00ff 255 < > e89de2c0 1533184200 C Ci:048:00 0 6 = 06030000 0904 > ---- snip ----- > > > -------------------------- ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. 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