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Observer ceejliu
Observer
223 Views
Registered: ‎08-05-2017

ZU4CG USB3.0 can not work well

Dear all,

When we use the USB3.0, the PC can recognize the device.

( USB 3.0 phy clock is generated by external PLL)

We will comment the MASK PLL

1. The bushund displayed the device is in USB2.0 mode.

2. The max packet size is 1024.

3. The transfer speed is lower than USB2.0(connected with USB2.0 cable)

//mask_poll(SERDES_L0_PLL_STATUS_READ_1_OFFSET, 0x00000010U);

//mask_poll(SERDES_L3_PLL_STATUS_READ_1_OFFSET, 0x00000010U);

we comment these check because when power on, the PLL are not generated. So we commented.

 

 

 

 

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Observer s03311251
Observer
74 Views
Registered: ‎08-07-2019

Re: ZU4CG USB3.0 can not work well

Have you tried to program a FTBL before programming your project? I just got my USB3.0 back with this method.

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