Block Diagram - Samsung ML-6060 Service Manual

7. Block Diagram

OSC.
PLL
20 MHz
POWER
ON RESET R e set & WD T
Ge ne rati on
R OM/SRA M/
R CS
FL ASH ROM
C on trol
R D
(4 Ban k)
WR
I/O
Co ntro l
(5 Ba nk)
IOCS
GPIO
In te rrup t
Co ntro l
(4 Extern al )
Ti me r
(3 CH )
To ne
Gen er ator
OSC.(Video)
45.03224 MHz VIS
En gi ne
C omm . I/F
R AM : 5 12 B
AD C
Samsung Electronics
SPGPe
( KS3 2C 61 10 0)
ARM7TDMI
Cac he 8KB
/CS,/RD ,/WR
A/D Bu s
CPU Bus
MA
EDO / FPM
MD
Interface
D RAM
Block
Cont r ol
(4 B ank)
G EU
PVC
Systerm Bus
Interface
Bloc k
[Arbiter]
PPI
U A RT D M AC
( 2 CH )
(3 C H )
JBIG H CT
LR AM :1 29 6B
C XRAM :256 B
H PVC
RA M
51 2B + 51 2B
THERMISTOR
ADC INPUT
THV READ
ADC INPUT
PROGRAM ROM FONT ROM
(FLASHMEMORY) (MASK ROM)
512K*16b*2ea 512K*16b*2ea
R AS
C AS
NETWORK
INTERFACE
(Option)
PARALLEL
INTERFACE
USB
OSC. INTERFACE IC USB
48 MHz
(USBN9602) INTERFACE
SUPPLY 5V to each ICs
5V
SMPS
DATA RAM SIMM PostScript 3
(DRAM) (Up to 64MB) (Flash : 2MB
1M*16b*2ea Font : 2MB)
(Option)
(Option)
I/O
INTERFACE
74HC245*2EA
74LS273* 3EA
Laser Diode Vcc
on LSU
[LASER DIODE ON/OFF SWITCH]
SUPPLY 24V to
Motor/HVPS/FAN/LSU
24V 24VS
[COVER OPEN SWITCH]
Block Diagram
C PU D ATA BU S
C PU A DD R. BU S
SYSTEM DATA B US
SYSTEM ADD R. BU S
PANEL INTERCACE
MOTOR CONTROL
NV RAM INTERCACE
SENSORS INPUT
SOLENOID CONTROL
FAN/PTL CONTROL
LSU INTERFACE
HVPS CONTROL
FUSER CONTROL
SCF INTERFACE
7-1