Reserved I2C bus address ranges.

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Computing using original ft hard- and software
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vleeuwen
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Reserved I2C bus address ranges.

Beitrag von vleeuwen » 13 Apr 2012, 21:38

Hi,
Today I checked the address range for the I2C device.
Beside the documented range from 0x50 upto 0x54,
I notice that:
-> 0x01 upto 0x07
-> 0x78 upto 0x7F
do not work either in my situation and do nopt generate a RoboPro warning.
I am using a simple Microchip I2C analyze tool.

These ranges are reserved.
Zuletzt geändert von vleeuwen am 13 Apr 2012, 21:55, insgesamt 2-mal geändert.

vleeuwen
Beiträge: 1609
Registriert: 31 Okt 2010, 22:23
Wohnort: Enschede (NL)
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Re: reserved I2C bus address ranges

Beitrag von vleeuwen » 13 Apr 2012, 21:52

See the latest I2C bus specificatie from NXP:
Rev. 4 — 13 February 2012
http://www.nxp.com/documents/user_manual/UM10204.pdf
Chapter 3.1.12
and also
http://www.totalphase.com/support/kb/10039/
for the set of reserved address in the 7 bits address space.Maybe this links could be added to the RoboPro I2C help file?

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