Sharp FO 4400 - B/W Laser - All-in-One Service Manual page 92

FO-4400U
FO-CS1
MMU
TLB
CCN
CACHE
H-UDI
INTC
CPG/WDT
EXTERNAL BUS
INTERFACE
Legend:
ADC: A/D converter
AUD: Advanced user debugger
BSC: Bus state controller
CACHE: Cache memory
CCN: Cache memory controller
CMT: Compare match timer
CPG/WDT: Clock pulse generator/watchdog timer
CPU: Central processing unit
DAC: D/A converter
BRIDGE
Fig. 2 HD6417706F133 BLOCK DIAGRAM
CPU
UBC
AUD
BSC
DMAC
CMT
I/O PORT
DMAC: Direct memory access controller
H-UDI: Hitachi user-debugging interface
INTC: Interrupt controller
MMU: Memory management unit
RTC: Realtime clock
SCI: Serial communication interface (with smart card interface)
SCIF: Serial communication interface (with FIFO)
TLB: Address translation buffer
TMU: Timer unit
UBC: User break controller
5 – 2
SCI
TMU
RTC
SCIF
ADC
DAC