UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 76

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

76
(3) Master reception processing routine
Fig. 6-8 shows the flow of the master reception processing routine.
SAR1
SAR2
MCR
1
1
Fig. 6-8 Flow of Master Reception Processing Routine
Slave address (four low-order bits)
Slave address (eight high-order bits)
Broadcast bits, number of arbitrations,
and control bits (The MSB is 0.)
CMR
MRRQF
Read FLG
Read FLG
CEX?
Start
CEX?
End
00001000
0
0
Data Sheet S13990EJ3V0DS
1
; Waiting for termination of previous command?
; Set master communication request command.
;
Waiting for termination of processing of
master communication request command?
;
Set data only when changing
SAR1, SAR2, or MCR.
PD72042B