TQ2440通过GL850G扩展的USB接口。HUB芯片重启几次就死了。

我们在2440的DP0、DN0这个USB口上接了一个HUB芯片,GL850G并且在分出的四个USB中的一个上面，接了一个USB键盘芯片。现在问题是偶尔有HUB芯片重启的现象，甚至有时HUB芯片死了。下面是我们串口信息：
usb 1-1: reset full speed USB device using s3c2410-ohci and address 2
usb 1-1: device not accepting address 2, error -110
usb 1-1: reset full speed USB device using s3c2410-ohci and address 2
usb 1-1: device not accepting address 2, error -110
hub 1-1:1.0: hub_port_status failed (err = -19)
hub 1-1:1.0: hub_port_status failed (err = -19)
hub 1-1:1.0: hub_port_status failed (err = -19)
hub 1-1:1.0: hub_port_status failed (err = -19)
hub 1-1:1.0: activate --> -19
usb 1-1: USB disconnect, address 2
usb 1-1: new full speed USB device using s3c2410-ohci and address 7
usb 1-1: device descriptor read/64, error -110
usb 1-1: device descriptor read/64, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 8
usb 1-1: device descriptor read/64, error -62
usb 1-1: device descriptor read/64, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 9
usb 1-1: device not accepting address 9, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 10
usb 1-1: device not accepting address 10, error -62
hub 1-0:1.0: unable to enumerate USB device on port 1


麻烦各位大虾给看看。

用别的usb设备会不会有这个问题？

HUB死后，任何USB设备插上都没有用。单独查其他设备是否会出现，那倒没有试过。

是否有可能是电源不稳定，供电不足所造成的呢？ 可以接其他USB设备试下。