General-Purpose Input/Output Port (Gpio); Outline; Feature; Block Diagram - Fujitsu MB86R02 Jade-D Hardware Manual

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MB86R02 'Jade-D' Hardware Manual V1.64

24 General-Purpose Input/Output Port (GPIO)

This chapter describes the functionality and operation of the General-Purpose Input/Output port

MB86R02 'JADE-D' has a maximum sized 24 bit GPIO port which is shared with other peripheral

ports. Please refer to "1.6.1 Pin Multiplex" for shared peripherals. The data read/write and

direction are controlled via the GPIO control register.

The GPIO module has the following features:

• 24 bit GPIO port

• Composed of the following 2 registers

• Port data register (GPDR)

• Data direction register (GPDDR)

Figure 24-2 Block diagram of a GPIO module shows the block diagram of the GPIO controller.

MB86R02 'JADE-D' has 24 of these units.

Figure 24-1 Block diagram of one GPIO module