UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 64

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

Communication frame
RDR2
CTR
RCR
FLG
IRQ pin
MARQ
MARC
REEN
STRQ
SLRE
SLRC
CEX
Control field
"0"
"0"
"0"
Separate frame (data-length bits: N1)
Data-length field
(Broadcast reception started)
3
4
1000
Data field
N1 + 2
N1 + 3
Minimum time
(when f
Header
X
= 6 MHz)
1010 (Broadcast reception terminated normally)
Master address
field
Broadcast frame (data-length bits: N2)
Approx. 5260 s (mode 0)
Approx. 1450 s (mode 1)
Slave address
field
Control
field
Data-length
(Slave reception terminated normally)
field
3
Data field
4
0100
(Slave reception started)
N2 + 2
N2 + 3
0110