mb90f377pff-g Fujitsu Microelectronics, Inc., mb90f377pff-g Datasheet - Page 91

• Manufacturer Part Number: mb90f377pff-g
• Description: 16-bit Proprietary Microcontroller
• Manufacturer: Fujitsu Microelectronics, Inc.

(3) Block diagram of the 6-channel serial IRQ control circuit
Register
write
disable
Serial interrupt
control register
(lower)
Serial interrupt
control register
(upper)
Serial interrupt
frame number
register
SERIRQ
busy
EN0A,
EN0B
IRR4
IRR0A, IRR0B, IRR1 to IRR3
Serial IRQs
frame no. for
channel 1 to channel 4
Initiate serial
IRQ transfer
request
IRQEN
channel 0A, 0B
Latches for
Software
control
selector for channel
Serial IRQ control
sample cycle
Serial IRQ
Serial interrupt
0A, 0B, 1 to 3
data latch and
output control
Protocol
machine
state
Hardware
control
MB90370/375 Series
cycle count
Frame
SIRQ enable
SIRQO
LCK
LRESET
SIRQI
LCK stop
status
LCK
restart
request
OBF0
OBF1
OBF2
OBF3
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