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TUSB2036
Related Posts

  • Forum Post: Suspend PIN status while charging from an external USB power adapter apart from PC

    Bijeta chakraborty9485
    Hello Team, My customer is making a small card called as BB Adapter with two USB ports and power supply circuitry including a battery charging Circuit.They are planning to use a USB Hub that will detect the different system states and control the current taken from PC and for that downstream port...
    on Feb 9, 2010

  • Forum Post: Re: Suspend PIN status while charging from an external USB power adapter apart from PC

    DHarmon
    Bijeta, I have some questions about your post... The TUSB2036 has one upstream port that must be connected to the HOST system (typically a PC) and either 2 or 3 downstream ports that get connected to either peripheral devices or another hub. These are the only legal connections to a downstream...
    on Feb 10, 2010

  • Forum Post: TUSB2036 Device Not Recognized

    BMurphy
    Hello all, I am having problems with the TUSB2036 HUB device and I was hoping someone here could help me out. My design followed the reference designs where possible and is highlighted below: TUSB2036 configured as a two port hub (NP3 pin HIGH). Self-powered hub (BUSPWR pin HIGH...
    on May 18, 2010

  • Forum Post: Re: TUSB2036 Device Not Recognized

    DHarmon
    BMurphy, The TUSb2036 does not require any specific drver and should work with the standard hub driver provided by the operating system. The first thing we need to do is review your schematic. If you do not want to post it on the forum, please sned it via e-mail to usb@ti.com .
    on May 18, 2010

  • Forum Post: TUSB2036 RESET Function

    Scott Burton
    Hello Forum, I hope someone can help me with a question regarding this device. I'm doing a two-port design with the TUSB2036 and want to ensure that the two TPS2553 port protection devices are held disabled until the 5V power rail is present and stable. I don't want a heavy load on the...
    on Jul 13, 2010

  • Forum Post: Re: TUSB2036 RESET Function

    Scott Burton
    Hi Julie, Thank you for your response! With the PWRONz outputs disabled when the TUSB2036 is held in reset I'll be able to use a PWRONz signal to keep the TPS2553 USB port power switch off until the voltage supervisor detects the USB power rail is present and stable. Excellent! Regarding...
    on Jul 15, 2010

  • Forum Post: TUSB2036 DP0PUR Question

    Scott Burton
    Hello Again Forum, Thanks very much for all your help with my previous questions on this device. Now I need your assistance again in understanding the purpose of the DP0PUR output so I ensure I'm using it correctly on my design. I understand from the TUSB2036 datasheet, and the USB2.0 standard...
    on Sep 20, 2010

  • Forum Post: Re: TUSB2036 DP0PUR Question

    Scott Burton
    Thank you very much Julie.Two follow-up questions for you please. 5/ You indicate that DP0PUR pulls active high only. Unfortunately, the datasheet is very vague on its behaviour in the opposite direction, indicating that "DP0PUR output goes to inactive low". I think its low state behaviour...
    on Oct 4, 2010

  • Forum Post: TUSB2036 Crystal Oscillator stops

    Scott Burton
    Hello Forum, Our design has the TUSB2036 clock supplied by a 6MHz crystal oscillator. When power is applied to the chip with it held in reset, the oscillator starts up and operates as expected and it does so indefinitely provided the chip continues to be held in reset. However, unless the upstream...
    on Jan 10, 2011

  • Forum Post: Re: TUSB2036 Crystal Oscillator stops

    Scott Burton
    Thank you Elias. Based on your feedback we've confirmed that the TUSB2036 is entering suspend mode. We now understand that this is due to the upstream host not communicating with the hub within the required 3ms window. We believe that this is because, in our application, the upstream USB host...
    on Jan 11, 2011

  • Forum Post: Re: TUSB2036 Crystal Oscillator stops

    Scott Burton
    That's good news Elias, but I'm a bit confused by your last statement. From the datasheet: When MODE is low, the APLL output clock is selected as the clock source to drive the internal core of the device and 6-MHz crystal or oscillator can be used. it appears that the MODE pin has to...
    on Jan 11, 2011

  • Forum Post: Re: TUSB2036 Crystal Oscillator stops

    Scott Burton
    Thank you for your help with this Elias!! Cheers, Scott
    on Jan 14, 2011

  • Forum Post: TUSB2036 cannot be recognized without overcurrent protection

    Gyorgy Sagi
    I built a hub based on this "6Mhz Bus-powered 2-port hub.pdf" schematic found in the TUSB2036 Reference schematic. I wouldn't like to use overcurrent protection and TPS2042. Is it possible to use TUSB2036 it without TPS2042. If it is possible , then what modifications should I make to the...
    on Feb 21, 2011

  • Forum Post: Re: TUSB2036 Device Not Recognized

    Guy Leishman
    Hello All I am having a similar problem with the TUSB2036 hub IC as well. This is an in circuit design. I get the "USB Device not recognized" as well. The Device manager sees the Generic USB Hub, but I also get another "Unknown device" under the Universal Serial Bus Controllers...
    on Oct 12, 2011

  • Forum Post: Re: TUSB2046B

    DHarmon
    Remo, If I read you schematic correctly, you need to tweak your reset circuitry. From the data sheet pin decription: " Generally, a reset with a pulse width between 100 μs and 1 ms is recommended after 3.3-V VCC reaches its 90%. Clock signal has to be active during the last 60μ s of...
    on Nov 7, 2011

  • Forum Post: 6-MHz Crystal Input or 48-MHz Clock

    Sebastian Maile
    Device: TPS2036 Do I have to use a 48-MHz Clock for USB2.0 or does it work also with a 6-MHz Crystal? I try to built a USB2.0 Hub but it also works with USB1.1
    on Jan 9, 2012

  • Forum Post: Re: TUSB2036 is initializing and entering in SUSPEND MODE.

    DHarmon
    Douglas, The USB 2.0 is a specification that defines three different speeds of operation - USB low-speed (1.5 Mbps), USB full-speed (12 Mbps), and USB high-speed (480 Mbps). The USB 2.0 specification superceded (replaced) the USb 2.2 specification. Low-speed & full-speed are identically to what...
    on Feb 29, 2012

  • Forum Post: Re: TUSB2036 Debugging issues

    DHarmon
    Sal, How are you powering the downstream ports? Can we review your schematic?
    on Mar 5, 2012

  • Forum Post: tusb2036 and tusb3200 reset issue

    bruce shine
    hello : there is a project , I use tusb2036 as usb hub conecting to pc, and tusb3200 connect to tusb2036 port 1. i want to know that reset the tusb2036 first or reset the tusb3200 first,, or there is no reset sequence between the two ic. please help me to get the result. thank you very much
    on Jun 16, 2012

  • Forum Post: RE: TUSB2036 cannot be recognized without overcurrent protection

    Faizan Zafar
    Hello! I'd like to extend this old question. If you avoid using the TPS2042 in both the self-powered and bus-powered modes, what should one set pin 21 (_ocprot/_pwrsw) to? (I'm trying to develop a self-powered usb hub without the TPS2042 but I set pin 21 high, for the very reason that I WASN'T...
    on Feb 3, 2013

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