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