UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 81

• Manufacturer Part Number: UPD72042BGT
• Description: LSI DEVICE FOR Inter Equipment Bus (IEBus) PROTOCOL CONTROL
• Manufacturer: NEC [NEC]

6.4.7 Reception Processing Routine
This routine is executed when RERQ has been set by the interrupt routine.
Fig. 6-12 shows the flow of the reception processing routine.
Notes 1. Indicates that reception of the communication frame has ended (terminated normally or suspended).
2. Indicates that reading of the reception data has been completed with the current RBF.
Read RBF
J>SIZE
J
Start
J + 1
N
R
?
Fig. 6-12 Flow of Reception Processing Routine
Y
Data Sheet S13990EJ3V0DS
End 2
RECF
Note 2
R
?
00
10 or
11
Increment PR
End 1
J
1
Note 1
; Reception terminated
normally or suspended?
PD72042B
; Initialize J.
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