Structare Of 8-Bit Serial I/O; Figure 8.2-1 Block Diagram Of 8-Bit Serial I/O - Fujitsu F2MC-8L Series Hardware Manual

8-bit microcontroller

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Structare of 8-bit Serial I/O

Each channel of the 8-bit serial I/O consists of the following 5 blocks:

• Shift clock controller

• Shift clock counter

• Serial data register (SDR)

• Serial mode register (SMR)

• Serial I/O interrupt (IRQ4)

Block Diagram of 8-bit Serial I/O

: Instruction cycle

Transfer direction selection

(Shift direction)

Serial data register (SDR)

Output enable

Output buffer

Internal data bus

Output buffer

Output enable

Shift clock selection

Shift clock counter

8.2 Structare of 8-bit Serial I/O

Serial mode register