MSP430's with USB 3.0?

John Westmoreland43

Guru 13915 points

Hello All,

I did a forum search on this - if it was there i missed it - any plans to have a USB 3.0 peripheral anytime soon?

If there is a thread - please just point me to it.

Thanks!
John

over 12 years ago

0 Argail over 12 years ago

Expert 2080 points

Why do you want to have an USB3 integrated in MSP430? Do you think you can handle 600mo/s?

0 John Westmoreland43 over 12 years ago in reply to Argail

Guru 13915 points

Maybe this will help:

http://low-powerdesign.com/donovansbrain/2011/03/01/power-management-in-usb-3-0/

0 Argail over 12 years ago in reply to John Westmoreland43

Expert 2080 points

Thank you for the link

0 Dragon Jam over 10 years ago

Prodigy 70 points

I too am curious about USB 3.0 support for an MSP430 chip. It's not just about raw bandwidth. USB 3.0 supports full duplex communication. If two processors wish to bi-directionally communicate asynchronously, then full duplex communications is a definite advantage. Using half duplex, one needs *two* separate ports for bi-directional i/o, or one can implement a protocol involving polling and heavier cpu load, to support rapid bi-directional i/o.

Here's a link showing differences between 2.0 and 3.0: www.diffen.com/.../USB_2.0_vs_USB_3.0

0 Ilmars over 10 years ago in reply to Dragon Jam

Guru 46710 points

Msp430 processing power is insufficient to handle even USB 2.0 data speeds. What's the point of asking for USB 3.0? Power management? - USB2.0 provides 2.5W - few orders of magnitude needed for fastest msp430 available. You shall check power consumption of USB 3.0 controllers before asking such for ultra low power microcontroller :)

0 Clemens Ladisch over 10 years ago in reply to Dragon Jam

Guru 316380 points

USB is a set of extremely complex protocols.

If you want two processors to communicate with each other, just use something simple, like SPI.

0 Ilmars over 10 years ago in reply to Dragon Jam

Guru 46710 points

Dragon Jam said:
USB 3.0 supports full duplex communication. If two processors wish to bi-directionally communicate asynchronously, then full duplex communications is a definite advantage.

UART is asynchronous and bidirectional. SPI is bidirectional, thou synchronous (which for small, closed systems is rather advantage).

0 zrno soli over 10 years ago in reply to Dragon Jam

Guru 34483 points

USB hardware module on MSP430 can go up to 1 MByte/s. Of course, exchanging frequently only few bytes between host and device will be slow. USB is not designed for this.

http://forum.43oh.com/topic/2775-msp430-usb-benchmark/

And MSP430 USB stack can be very lite.

http://forum.43oh.com/topic/3931-native-usb-port-on-lm4f120-board/?p=37130

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MSP430's with USB 3.0?