Справочник Пользователя для Olimex Open Source Hardware Embedded ARM Linux Single board computer with i.MX233 ARM926J @454Mhz IMX233-OLINUXINO-NANO IMX233-OLINUXINO-NANO
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IMX233-OLINUXINO-NANO
OLIMEX© 2013
iMX233-OLinuXino-NANO user's manual
3.3V I2C Master 0
0
0
1
3.3V SPI Flash 1 Master 0
0
1
0
3.3V SPI Flash 2 Master 0
0
1
1
3.3V NAND 0
1
0
0
Start up waits for JTAG
debugger connection 0
1
1
0
3.3V SD/MMC 1 (Default !!!) 1
0
0
1
3.3V SD/MMC 2 1
0
1
0
6.9 Jumper description
Please note that all the jumpers on the board are SMD type. If you feel insecure in your
soldering/cutting technique it is better not to try to adjust the jumpers. Additionally for the NANO
board the jumpers are pretty tiny to keep the board factor as small as possible. If you are not good at
soldering you might damage the board permanently.
soldering/cutting technique it is better not to try to adjust the jumpers. Additionally for the NANO
board the jumpers are pretty tiny to keep the board factor as small as possible. If you are not good at
soldering you might damage the board permanently.
6.9.1 CH
/CS and DH/DS
Those two jumpers must be moved together – there are two available options – configuring
software I2C interface (CS, DS) or hardware I2C interface (CH, DH).
software I2C interface (CS, DS) or hardware I2C interface (CH, DH).
The default positions for the first revision released (revision B) of the NANO board is DS/DH
(software I2C).
(software I2C).
The default positions of these jumpers for future revisions of the board would be CS/DS (hardware
I2C).
I2C).
Note that if you wish to use our UEXT modules the jumpers should be set to hardware I2C
position.
position.
6.9.2 CSS/CSH
This jumper controls whether the I2C CS (chip select) is software or hardware.
CS_SW:Open/CS_HW:Close
The default position is CS_HW closed (hardware CS).
6.9.3 Boot mode selecting jumpers
The boot mode is discussed in chapter 6.8 of this manual.
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