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Chapter 3 Peripheral Control

3.1 Peripheral control mode

SH-2 can control peripherals via SMPC. There are the following two peripheral control methods.
  1. SMPC control mode
  2. SH-2 direct mode

SMPC control mode

● Block diagram

Figure 3.1 shows a block diagram of the SMPC control mode. SMPC control mode is activated by setting a command parameter in IREG of the SH-2 interface register and issuing an INTBACK command. The peripheral data collection result is output to OREG as a result parameter.

Figure 3.1 Block diagram of SMPC control mode

● Features

This is an effective way to minimize the overhead for accessing peripherals within an application.

● Settings for using SMPC control mode

Figure 3.2 shows a setting example for using the SMPC control mode.
Figure 3.2 shows an example of setting for port 1. Mode settings can be set independently for each port.

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