USB hosts hubs transceivers Forum Discussions

Hello,

is there example connection diagram for CYUSB4347 gigabit ethernet DS5 port

thank you in advance.

I have Uploaded the MSC_EEPROM_scan_LCP_v2.bin into 24LC512 EEPROM

But USB key Is Not Detecting to My Controller Please Guide me..

Regards

Eshwar P

Hello! Recently, our team is  using chip CYUSB3304-68LTXI to achieve a usb 3.0hub. The main controller is Hi3559AV100 soc whose CPU core is arm cortex A73. We compiled uboot-2016.11 and linux kernel  4.9.37 to emmc, the system can work properly after debugging except the usb hub. The usb hub chip CYUSB3304 is connected to Hi3559AV100 usb module.

1.Firstly, we set the MODE_SEL[0] to low level and MODE_SEL[1] to high level, that is to say we configure the chip as a IIC slave device to be configured from external Hi3559 controller.  But we don't configure anything to CYUSB3304 through IIC bus. Then the CYUSB3304 chip cannot be identified by uboot and kernel. Then we forcely pull the MODE_SEL[0] to high level , that is to say we configure the chip to be configured from internal rom. Then the CYUSB3304 chip can be identified by uboot and kernel. If configured as a IIC slave device ,should I download firmware to CYUSB3304 or just configure some options like PID/VID through IIC bus? Otherwise, is there any firmware in chip rom or just some configure options in it? Can we get the default firmware or configure options?

2. After configured from internal rom,  the CYUSB3304 chip can be identified by uboot and kernel. In linux system, the CYUSB3304 can be identified as a usb2.0 and usb3.0 hub separately, whose ID is 04b4:6502 and 04b4:6500. But in uboot only usb2.0 device can be identified while usb3.0 hub cannot be identified. Meanwhile, we test a realtek usb hub, which can be identified as a usb2.0 usb3.0 device successfully both in uboot and linux system. By openning the debug info in uboot, we can see the usb3.0 hub of CYUSB3304 has been identified as super speed by uboot, but returned a stalled status while uboot getting hub configuration of usb3.0 hub of CYUSB3304, leading to the failure of identification of usb3.0 hub of CYUSB3304. What's the matter?

[Control msg data is :  request: 0x6, requesttype: 0xA0, value 0x2900 index 0x0 length 0x4]

Hello,

My customer is considering HX3.

The host is running Linux OS, the version is Kernel 4.9, and the OS is Ubuntu 18.04.

The datasheet states that the HX3 is compatible with Linux kernel version 3.11, but is the Generic hub class driver for Kernel 4.9 also compatible?

Regards,

Naoaki Morimoto

Hello

[Q1]  About CY7C65642-28LTXCT pins, Is it necessary to solder all pins? (Without heat dissipation pad)
Especially, there are some not using pins(floating), By covering the pad with a resist and not opening the metal mask, it is possible to prevent a short circuit between terminals during component mounting.

[Q2] Does the performance of parts change depending on whether or not the open pins are soldered? (Without heat dissipation pad)
Example: Doesn't D+/D- use for 1 port, so does the performance change when the pins are floated?
(Open on the board even if solder is applied)

Best Regards

Arai

Hi Cypress

Can you offer power on sequence of CYUSB3304  Figure or datasheet for reference , Thank !!

Hi All

I have a question regarding CYUSB3304-68LTXC, is there anyway to disable USB 2.0 functionality?

Looking at the datasheet I can only see a way to disable USB 3.0 functionality

Hello

     The two DS ports of CYUSB3304 are connected to two USB2.0 camera devices, and the data transfer speed is 30MB/s.

     The theoretical bandwidth of USB2.0 is 480Mbps. If this is used, what is the actual transmission bandwidth of the US and DS ports? Is there similar test data?

Best Regards，

Ferris