Interrupt Function - Fujitsu MB90335 Series Hardware Manual

MB90335 Series
17.3.4

Interrupt Function

Extended I/O serial interface can generate the interrupt request to the CPU.
■ Interruption Function of Extended I/O Serial Interface
Upon completion of data transfer, SIR bit indicating an interrupt flag is set, and when SIE bit of the SMCS
enabling interrupts is "1", the interrupt request is output to the CPU.
Figure 17.3-9 shows the output timing of interrupt signal.
SCK
BUSY
SIR
RD/WR of SDR
SOT
CM44-10137-6E
Figure 17.3-9 Output Timing of Interruption Signal
SIE=1
DO6
FUJITSU MICROELECTRONICS LIMITED
CHAPTER 17 EXTENDED I/O SERIAL INTERFACE
17.3 Operation of Extended I/O Serial Interface
(Transfer complete) MODE=1
DO7
(Data hold)
383