CHAPTER 19 IEBus CONTROLLER (V850/SB2)
User’s Manual U13850EJ4V0UM
491
(2) Master reception
Figure 19-35. Master Reception (Interval of Interrupt Occurrence)
P A
P A
P A
P A
P A
P
A
Data
Data
Data
P
t1
T
Communication starts
Start bit
Broad-
casting
Master address
Slave address
Control
Telegraph
length
Data
T
T
A
End of communication
End of frame
Communication
start interrupt
T
T
T
T
T
A
T
t4
t4
t5
t2
A
P
T
A
t3
Remarks 1.
T: Timing error
P: Parity error
A: ACK error
: Data set interrupt (INTIE1)
2.
End of frame occurs at the end of 32-byte data.
(IEBus: at 6.29 MHz)
Item
Symbol
MIN.
Unit
Communication starts – timing error
t1
Approx. 93
µ
s
Communication starts – communication start interrupt
t2
Approx. 1282
µ
s
Communication start interrupt – timing error
t3
Approx. 15
µ
s
Communication start interrupt – end of communication
t4
Approx. 1012
µ
s
Receive data read interval
t5
Approx. 375
µ
s
Содержание MPD703030A
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