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Writing to LTC1663 DAC
Posted: Sat Jan 17, 2015 4:28 pm
by Tubes4sale
I try to write data to the LTC1663 DAC with de SUB 20 tool version 1.6.15
I get a error from SUB20 tool:
i2c status:48
ERROR: I2C error
0x48 SLA+R transmitted; NAK received
What does this error means ?
Re: Writing to LTC1663 DAC
Posted: Wed Jan 28, 2015 3:26 am
by serg
This means that your device didn't acknowledge the read transaction
Re: Writing to LTC1663 DAC
Posted: Sat Feb 14, 2015 4:37 pm
by Tubes4sale
I have found the problem, I was using the address that SUB20 returned after a SCAN for devices.
SUB-20 returns 7E no matter what configuration a make with inputs A0, A1 and A2.
When I use the address that is stated in the data sheet from the LTC1663(9) the write to LTC1663 works fine.
The only thing a have to do for the data bytes write is switch MSB and LSB.
Why is SUB 20 returning address 7e instead of the correct address from the LTC1663?
I also have connected a DAC6576 to the I2C bus, when I do a scan I get 0 devices.
Is the SUB-20 limited in recognizing devices?
Re: Writing to LTC1663 DAC
Posted: Thu Apr 02, 2015 8:04 am
by xol
HI,
What Slave address is returned by SUB-20?