ADAU1787 I2C Address different in datasheet and Eval board sample.
ADAU1787 datasheet stated that its I2C address started at 0x28. But when I am in Sigma Studio, when I connected USBi and AD1787, the pulldown only showed I2C address 0x50. The development kit schematics also had address 0x50 printed, But, on page 8 of eval kit user's manual, Figure 15, it showed i2C address 0x28. However, page 9, Figure 20, the address became 0x50. I am completed confused.
Using 0x28 and 0x50, I was able to execute the sample code described in eval kit user manual. How can it be, two addresses single ADAU1787?
Please help.
ADAU1787
Integrated/Special Purpose A/D Converters
Audio CODECs
7 bit vs. 8 bit descriptions for I2C address. ADI uses both.
I reread ADAU1787 datasheet, though page 50 I2C address showed 7-bits, but on page 51, figure 60, it showed ADAU1787 is using 8-bit I2C address which is 0x28. But why Sigma Studio using 0x50 to communicate with ADAU1787 eval kit?
I didn't go read the reference you made but 0x28 and 0x50 are the same actual I2C address if one is a 7 bit description and the other's an 8 bit description. The LSB of the address is the R/W bit. If it seems swapped based on the documents then it's a typo as to whether they mean 7 or 8 bit format.
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