Interrupt Function - Epson S1C63558 Technical Manual

CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Serial Interface)
Timing chart
Figure 4.11.7.4 show the asynchronous transfer timing chart.
RXEN
RXTRG(RD)
RXTRG(WR)
Sumpling
clock
SIN
D0 D1 D2 D3 D4 D5 D6 D7
(In 8-bit mode/Non parity)
TRXD
OER control signal
OER
Interrupt

4.11.8 Interrupt function

This serial interface includes a function that generates the below indicated three types of interrupts.
• Transmitting complete interrupt
• Receiving complete interrupt
• Error interrupt
The interrupt factor flag ISxx and the interrupt mask register EISxx for the respective interrupt factors are
provided and then the interrupt can be disabled/enabled by the software.
Figure 4.11.8.1 shows the configuration of the serial interface interrupt circuit.
90
TXEN
TXTRG(RD)
TXTRG(WR)
Sumpling
clock
SOUT
D0 D1 D2 D3 D4 D5 D6 D7
(In 8-bit mode/Non parity)
Interrupt
(a) Transmit timing
D0 D1
(b) Receive timing
Fig. 4.11.7.4 Timing chart (asynchronous transfer)
EPSON
D2 D3 D4 D5 D6 D7
1st data
D0 D1 D2 D3 D4 D5 D6 D7
2st data
S1C63558 TECHNICAL MANUAL