RF430CL331HIPWR datasheet(15/60 Pages) TI1

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RF430CL331H

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SLASE18A – SEPTEMBER 2015 – REVISED NOVEMBER 2015

5.6.1

2C Examples

Figure 5-4 and Figure 5-5 show examples of I2C accesses to the Control and Status registers,

respectively. Comments are provided on the tags in the figures.

5.6.1.1

I2C Write

Figure 5-4. I2C Access Example: Write of the Control Register at Address 0xFFFE With 0x00, 0x16 (RF

Enable = 1)

A. I2C_READY signal, by being high indicates that I2C communication can be started.

B. The device address (18h because E0 = E1 = E2 = 0) is being transmitted out.

C. Register address is 0xFFFEh (which is the Control register).

D. I2C_READY line is now low, new I2C communication should not be started.

E. The data to write is transmitted (0016h).

5.6.1.2

I2C Read

Figure 5-5. I2C Access Example: Read of the Status Register at Address 0xFFFC, Responds With 0x00,

0x01 (Device_Ready = 1)

A. I2C_READY signal, by being high indicates that I2C communication can be started.

B. Packet has started: the device address (18h because E0 = E1 = E2 = 0) is being sent out.

C. Address FFFCh next is transmitted, which is the address of the status register.

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