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CHAPTER 18 IEBus CONTROLLER (V850/SC2)
544
User’s Manual U15109EJ3V0UD
18.4 Interrupt Operations of IEBus Controller
18.4.1 Interrupt control block
Interrupt request signal
<1> Communication error
(IEERR)
<2> Start interrupt
(STARTF)
<3> Status communication
(STATUSF)
<4> End of communication
(ENDTRNS)
<5> End of frame
(ENDFRAM)
<6> Transmit data write request
(STATTX)
<7> Receive data read request
(STATRX)
1 through 5 of the above interrupt requests are assigned to the interrupt status register (ISR). For details, refer to
Table 18-9 Interrupt Source List
.
The configuration of the interrupt control block is illustrated below.
Figure 18-16. Configuration of Interrupt Control Block
IEERR
STARTF
STATUSF
ENDTRNS
ENDFRAM
STATTX
STATRX
IEBus macro
Interrupt control block
V850/SC2 CPU
INTIE1
INTIE2
Cautions 1. OR output of STATRX and STATTX is treated as a DMA transfer start signal (INTIE1).
2. OR output of IEERR, STARTF, STATUSF, ENDTRNS, and ENDFRAM is treated as a vector
interrupt request signal (INTIE2) for the V850/SC2.