UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 65

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

Communication frame
CMR
RCR
FLG
STR
RBF
LOR1, LOR2
IRQ pin
MARQ
MARC
LOCK
STRQ
SLRE
SLRC
CEX
RFL
Data-length
bits: 24
"0"
"0"
P A
0
ACK
Data 1
0100 (Slave reception started)
P A
0
ACK
Minimum time
(when f
Data 22
X
= 6 MHz)
P A
0
Approx. 1570 s (mode 0)
Approx. 390 s (mode 1)
ACK
Data 23
0101 (Slave reception buffer full)
P A
1
NAK
Data 23
P A
0
(Slave reception terminated normally)
ACK
Data 24
(last)
P A
0
ACK
0110
Lock address