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1701 : Write Back ( WB )

SigmaDSP & SigmaStudio stmoeller60 Jan 20, 2011 00:00 4 replies Original on forum ↗
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stmoeller60 Question
Jan 20, 2011 00:00

If I have ADDR0 ( pin 7 ) against GND but ADDR1 (Pin 20) left open ( not VDD and not GND ) how do I have to configure I2C - Adress in the USB interface in SigmaStudio to downlaod ? Or is it neccessary to connect Pin 20 ?

At the moment I can't download anything. The board isn't an eval-board, but the DSP circuit is almost the same.

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stmoeller60 Reply
Jan 21, 2011 00:00

Any suggestions ???

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ADIApproved Reply
Jan 21, 2011 00:00

The ADDR1 pin must not be left floating as it is a digital input to the device and is required for I2C port initialization. If you leave that pin floating, I2C communications will be either erratic or completely non-functional. Please connect it to either GND or VDD.

If you connect it to GND, use the I2C 0x68 (104) channel on the USBi.

If you connect it to VDD, use the I2C 0x6A (106) channel on the USBi.

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stmoeller60 Reply
Jan 22, 2011 00:00

Thanks very much, Brett. Will do so !

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EZAdministrator Reply
Aug 2, 2018 00:00

This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

Thank you,
EZ Admin

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