CHAPTER 19 IEBus CONTROLLER (V850/SB2)
User’s Manual U13850EJ4V0UM
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19.4 Interrupt Operations of IEBus Controller
19.4.1 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 19-9 Interrupt Source List
.
The configuration of the interrupt control block is illustrated below.
Figure 19-29. Configuration of Interrupt Control Block
IEERR
STARTF
STATUSF
ENDTRNS
ENDFRAM
STATTX
STATRX
IEBus macro
Interrupt control block
V850/SB2 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 V850/SB2.
Содержание MPD703030A
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