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Functional Block Diagram

For the purpose of this report, Figure 1-1 is used to illustrate the logic and translation use cases. Each red block has an associated use-case document. Links are provided in Table 1-1 and Table 1-2. For a more complete block diagram, see the Interactive Online End Equipment Reference Diagram for Body Control Modules.

Logic and Translation Use Cases

Each use case links to a separate document that provides additional details including a block diagram, design tips, and part recommendations. The nearest block and use-case identifiers are listed to match up exactly to the use cases shown in the provided Figure 1-1.

Increase the Number of Outputs on a Microcontroller

Microcontrollers often have a very limited number of GPIO pins. Serial-in parallel-out shift registers can be used to output to a large number devices while only using a few GPIO pins from the controller.

See more about this use case in the Logic Minute video Increase the Number of Outputs on a Microcontroller.

• Serial input data (BR_in) must be faster than the desired output data rate (BR_out) based on the number of output bits (N) by this equation: BR_in (Mbps) = BR_out (Mbps) × N
• The clock input controls the rate at which data is loaded into the shift register, F_clk (MHz) = BR_in (Mbps)
• For more outputs, shift registers can be daisy-chained together
• [FAQ] What is the default output of a latched device? (Flip-Flop, latch, register)
• Ask a question on our TI Engineer-to-Engineer (E2E™) forum

For more devices, browse through the online parametric tool where you can sort by desired voltage, channel numbers, and other features.