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USB Hosts Hubs Transceivers

Flance_Fang
New Contributor II

Hi. Cypess

customer want to test the USB3.0 eye pattern tes in the CYUSB3314-88LTXC?The CPU may generate the LFPS data singnal into upstearm, without any singnal  pass through in down stream. how to configurate this IC(HX3 Blaster Plus) or tell me the method HX3 eye pattern and device.(客户需要测试3314这个芯片的USB眼图,CPU能发出测试LFPS码型信号,经过HUB之后没有输出。如何配置才能测试出USB3.0波形,另外我们的芯片当初的眼图是使用了哪些设备进行测试的呢)?

thanks

flance fang

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1 Solution
YiZ_31
Moderator
Moderator

你们可以咨询一下你们使用仪器的厂家怎么测HUB,我们这边不提供眼图测试指导的。

View solution in original post

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5 Replies
YiZ_31
Moderator
Moderator

Hi Flance,

正常来说所有的测试设备都可以测,没有特殊的步骤。我查到之前有用Agilent U7243A的记录。按照相应仪器说明书中测试HUB的方法就可以。

Regards,
Eddie

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Flance_Fang
New Contributor II

Hi. Eddie

假设CPU出发包命令,这时候接usb的测试夹具,随意接一个HUB的USB口,能保证完整测试出来?

        我们的问题是HUB外接3个USB口,假设是1/2/3,我们要如何设置配成,CPU发包通过HUB能指定出来到1/2/3口,以便于测试正常进行,而不至于出问题。(他们希望在测试过程芯片做透传,是否可以设置)

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YiZ_31
Moderator
Moderator

你们可以咨询一下你们使用仪器的厂家怎么测HUB,我们这边不提供眼图测试指导的。

View solution in original post

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Flance_Fang
New Contributor II

Hi. Eddie

the attachment is their test report, FYI, pls give some advise on TSSC-Freq-Dev-Max (Max) item

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YiZ_31
Moderator
Moderator

Hi Flance,

进一步检查需要看原理图和PCB,你需要线下联系Cypress。

Regards,
Eddie

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