microwire protocol

Here we discuss the JTAG on platforms. CPU,CPLD etc.
merkin
Posts: 246
Joined: Thu Jun 28, 2007 8:49 pm

microwire protocol

Post by merkin » Wed Mar 28, 2018 12:37 pm

hi, does usbjtagnt support microwire bus protocol for read/write microwire eeprom?
http://www.interfacebus.com/Microwire_B ... ption.html

usbbdm
Posts: 8560
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm » Wed Mar 28, 2018 9:39 pm

merkin wrote:hi, does usbjtagnt support microwire bus protocol for read/write microwire eeprom?
http://www.interfacebus.com/Microwire_B ... ption.html
I think EEPROM in general is working. Do you have specific EEPROM to try?

merkin
Posts: 246
Joined: Thu Jun 28, 2007 8:49 pm

Post by merkin » Thu Mar 29, 2018 9:19 am

for eeprom, i see SPI and I2C protocol support, but not MICROWIRE.

here is specific eeprom:
http://ww1.microchip.com/downloads/en/D ... oc5140.pdf

MICROWIRE protocol is subset of SPI, but not the same protocol (data latch is different).

usbbdm
Posts: 8560
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm » Fri Mar 30, 2018 6:44 am

I see. I do not think USB JTAG NT can support it. The slowest clock is 6M. But I will keep this in mind.

usbbdm
Posts: 8560
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm » Fri Nov 02, 2018 6:25 pm

Microwire might be supported in future project.

usbbdm
Posts: 8560
Joined: Mon Jul 18, 2005 9:33 pm

Re: microwire protocol

Post by usbbdm » Thu Feb 06, 2020 10:18 pm

u-Link NT can support microwire EEPROM 93CXX. https://youtu.be/MPoyYrS7eT4

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