Interrupt Function Of The I/O Extended Serial Interface - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 18 I/O EXTENDED SERIAL INTERFACE

18.3.4 Interrupt Function of the I/O Extended Serial Interface

The I/O extended serial interface can generate an interrupt request to the CPU. When
data transfer has completed, the SIR bit will be set as an interrupt flag. If the SIE bit of
the SMCS register is "1" to allow an interrupt, an interrupt request is output to the
CPU.
■ Interrupt Function of the I/O Extended Serial Interface
SCK0, SCK1
BUSY
SIR
Read/write
of SDR
DO6
SOT0, SOT1
300
Figure 18.3-8 Output Timing for Interrupt Signals
(End the transfer)
SIE = 1
DO7 (Holds the data)
* When MODE = 1