TI中文支持网Part Number:TUSB9261
您好，请教一个问题：关于TUSB9261这个芯片，在我们的设计中，我需要知道连接的信号是USB2.0还是USB3.0，所以使用的固件版本是v1.03。 但是在应用中，会出现概率性的连接失败，能否说说芯片检测连接的方式和过程，以及判断的依据。 以便我分析USB主机的问题或USB枚举过程中的哪个步骤异常。目前我们是通过读取GPIO的高低电平来判断USB是否已经识别成功，但是我们不知道你们这边判断USB是否识别成功的依据是什么？我们现在需要分析，非常希望你们可以帮忙解答。
jiong huang：
有人帮忙解答疑惑吗？非常感谢！
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Kailyn Chen：
您好，判断是USB2.0还是3.0是上位机来控制的，比如PC和TUSB9261连接，如果PC的USB接口是USB3.0，那么TUSB9261的USB连接就是3.0的，如果PC的USB 接口是２.０的，那么TUSB9261的USB连接的就是2.0的。
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jiong huang：
抱歉可能我描述得不是很准确，我想问的是我们目前是通过读取GPIO7的高低电平来判断USB3.0信号是否识别到，这个GPIO的状态是TUSB9261固件内部去切换的，我想知道这个内部的判断识别成功与否的依据是什么？
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Kailyn Chen：
您好，是的，GPIO7 可以监测是否或判断USB3.0的连接。
我看到英文E2E上有一个和您相同的帖子，美国工程师也已经给出详细回复，您可以参考下：
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1022434/tusb9261-how-to-detect-the-connection-between-usb2-0-and-usb3-0/3780675#3780675
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jiong huang：
您好，美国那边跟咱们这边时差很大，您能帮忙回答下问题吗？感谢。
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jiong huang：
我们在切换到USB3.0检测的时候，TUSB9261的debug UART口输出的信息如下，请问这些log信息怎么解读？能大致跟我们说下吗？或者有什么文档描述可以参考吗？谢谢。
========================================================|| TUSB926x Firmware v1.03 [Sep 13 2013 17:02:30] |||| Device ID: 0x0000 ||========================================================
Reset Flag(s): [Power-Up]
[0000000001] Datapath RAM Usage: 80208 / 81920 bytes.[0000000001] Supported NCQ Depth: 32[0000000001] U1/U2 Transistions: OFF[0000000001] USB PHY Suspend: ON[0000000001] SATA LPM: OFF[0000000001] Device is Self-powered.[0000000001] -> usb_hal_init()[0000000001] USB Core Ver: 0x120a.[0000000001] USB SSC is OFF.[0000000051] -> usb_hal_connect()[0000000051[0000000051] LTSSM state = (0x5) RX DETECT.] -> ahci_init()[0000000051] -> ahci_hba_reset()[0000000065] USB Reset event occurred.[0000000065] LTSSM state = (0x7) POLLING.[0000000078] Connected at SUPER speed.[0000000191] -> usb_hal_set_address() – addr: 0x1.[0000000306] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000306] -> ahci_port_reset(0)[0000000361] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000361] -> ahci_port_reset(0)[0000000416] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000416] -> ahci_port_reset(0)[0000000471] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000471] -> ahci_port_reset(0)[0000000526] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000526] -> ahci_port_reset(0)[0000000581] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000581] -> ahci_port_reset(0)[0000000636] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000636] -> ahci_port_reset(0)[0000000691] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000691] -> ahci_port_reset(0)[0000000698] -> handle_usb_set_configuration() – val = 1.[0000000704] -> handle_usb_set_interface() – num = 0, alt = 1.[0000000704] -> ums_uas_reset()[0000000746] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000746] -> ahci_port_reset(0)[0000000801] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000801] -> ahci_port_reset(0)[0000000856] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000856] -> ahci_port_reset(0)[0000000911] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000911] -> ahci_port_reset(0)[0000000966] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000000966] -> ahci_port_reset(0)[0000001021] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001271] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001271] -> ahci_port_reset(0)[0000001326] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001326] -> ahci_port_reset(0)[0000001381] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001381] -> ahci_port_reset(0)[0000001436] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001436] -> ahci_port_reset(0)[0000001491] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001491] -> ahci_port_reset(0)[0000001546] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001546] -> ahci_port_reset(0)[0000001601] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001601] -> ahci_port_reset(0)[0000001656] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001656] -> ahci_port_reset(0)[0000001711] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001711] -> ahci_port_reset(0)[0000001766] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001766] -> ahci_port_reset(0)[0000001821] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001821] -> ahci_port_reset(0)[0000001876] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001876] -> ahci_port_reset(0)[0000001931] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000001931] -> ahci_port_reset(0)[0000001986] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000002236] -> ahci_wait_complete() timed out! Rd: 0xfb000128 = 0x00000000, cmplt_val = 0x00000003.[0000002236] @Error: Timeout waiting for PHY Ready. P0SSTS = 0x00000000, P0SERR = 0x00000000.[0000002236] -> ums_uas_init_queue_depth() – 32.[0000002236] Connected to[0000002236] -> ums_uas_send_sense_iu() – cmd_index = 0, status = 0x02, tag = 0x1f, CDB[0] = 0x00, retry = N. 0 AHCI device(s).[0000002239] -> ums_uas_send_sense_iu() – cmd_index = 11, status = 0x02, tag = 0x1f, CDB[0] = 0x00, retry = N.
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Kailyn Chen：
抱歉回复晚了,在您提供的debug信息中,其中已经有提示connected at super speed 说明USB3.0 link成功了.
