UPD72042BGT NEC [NEC], UPD72042BGT Datasheet - Page 3

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

BLOCK DIAGRAM
Remark The pin names in parentheses are used when two-wire serial I/O is selected.
BUS +
BUS –
Internal bus
Parity detection
Parity generation
Receiver
Contention
Driver
Test circuit
detection
section
section
section
TEST
Data link controller
Filter
generation
RESET
Timing
section
Synchronization
P/S conversion
control section
Data Sheet S13990EJ3V0DS
section
XI
Oscillation
Program
detection
control
section
section
crash
Frame data
control
section
XO
(33 bytes)
(40 bytes)
(5 bytes)
(7 bytes)
AV
CMR
WDB
TBF
RDB
RBF
CTR
STR
FLG
DD
V
DD
GND
PD72042B
(SIO)
(NC)
CS
C/D
SCK
SO
SEL
IRQ
SI
3