I2C on T2080 RDB

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I2C on T2080 RDB

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monalihaware
Contributor III

this is regarding T2080RDB I2c interface.
I believe that ccb clock is 600KHZ according to the init file. i wamt to do ask the following-

1. i2c maximum frequency is 400KHz so is it okay to program i2cfdr=0x06 (for 360.576KHz) or 0x29 (for 390KHz)

2. ADT7481 datasheet says that it's device address is 1001100(0x4c) but the user guide says 0x40. WHich is correct?

3. is it correct to program i2cdr as 10011000 for START ( "1001100" + '0' for 0x4c as device address for an instance) ?

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Pavel
NXP TechSupport
NXP TechSupport
  1. It depends on your platform clock. See the RCW[SYS_PLL_RAT] bit value.

 

  1. The ADT7481 is available with one device address, 0x4C (1001 100b). The Section 2.9 of the T2080RDB User Guide also shows address 0x4C of the ADT7481.

 

  1. See simple I2C program example in the attachment.


Have a great day,
Pavel Chubakov

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