Why USBHost_Mass_Storage is so slow on LPC1788,LPC1850

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by whoms on Sat Apr 28 17:51:31 MST 2012
I've tested nxpUSBLib 0.94 on LPC1788,LPC1850. USB flash disk is directly sector wrote using USBHost_Mass_Storage .
The speed is only 150KB/s. And I've verified the LPC1850's USB0 host is set at High Speed mode.
LPC1788 is running at 108MHz,USB CLK=48MHz
LPC1850 is running at 167MHz,USB CLK=480MHz

Can anybody give an explanation ? How to improve the USB flash disk writing speed to about 1MB/s on LPC185x or LPC435x ?