JVC XM-P55 Service Manual page 9

HD6433045SV14X (IC501): Beams Microcomputer
Terminal Layout
Block Diagram
Port B
Port 3
Interrupt controller
ROM
Mask ROM
PROM
Flash memory
RAM
16 bits
integrated
timer unit
(ITU)
Programmable
timing pattern
controller (TPC)
Port A
Port 4
Address bus
Data bus (upper level)
Data bus (lower level)
DMA
controller
(DMAC)
Refresh
controller
Watch dog timer
(WDT)
Serial communication
interface (SCI) 2ch
A/D converter
D/A converter
Port 7
XM-P55
XM-PJ1
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