Datasheet

Theory of Operation for Multi-Cal-Slave EVM Hardware

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Figure 4 illustrates the jumpers and associated circuitry for selecting the slave (1 through 7). The seven

slave signals are used to clock in data to U35. These data are used to control the multiplexers on the

slave board.

Figure 4. Slave Select Jumpers to U35

The signals from U933 are used throughout the Multi-Cal-Slave board to set the I

C address on bus

expanders. Figure 5 shows a typical example of this configuration. Pins 1, 2, and 3 on U800 select the I

address for this device. The same connections are made on U820, U821, and U921.

Figure 5. I

C Address Decoding from U933 to U800

Multi-Cal-Slave Evaluation Module SBOU094–September 2010

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