Sharp FO-3150 Service Manual page 80

FO-3150U/C
(3) Panel control description
The following controls are performed by the SCE214.
•
Operation panel key scanning
•
Operation panel LCD display
(4) Signal connection block
•
Main control block diagram
OPERATOR
PANEL,
KEYPAD,
SDCLK
SDCEN
DWEN
CAS_N
SDRAM
RAS_N
D[15:0] PD65944
ASIC
A[13:0]
SCANNER
MOTOR DRIVERS
SCANNER
CONTROLS
SCANNER
VIDEO
PREPROCESSING
SERIAL SYNC
PORTS
(SSIF)
GENERAL
PD780032A
8bit PURPOSE I/O
CPU
SYNC/ASYNC
SERIAL PORT
THERMISTOR
ZCN
POWER UNIT
PWRLY
OPO[4:0]*
OPI[3:0]*
LCD LCDCS*
CLOCK
INTN
DOPON
ASICRES
GACSN
RDN
WRN
PINON
PDAT
PCLK
PLAT
A[5:0]
D[7:0]
SCE214
1-CHIP
FAX ENGINE
SM[3:0]*
START
CLK2
VIN
SSCLK[2:1]*
SSTXD[2:1]*
SSRXD[2:1]*
SSSTAT[2:1]*
GPIO
SASCLK*
SASTXD*
SASRXD*
SASIF
TEST[1:0]
BATRSTN
RESETN
TONE
ALTTONE
TSTCLK
REGDMA
WAITN
SYNC
PWRDWNN
INTPWRDWNEN
XIN
RTC
XOUT
CRYSTAL
SXIN
SYSCLK
SXOUT
CRYSTAL
INTERNAL
IA
EXTERNAL BUS
A[23:0]
D[7:0]
A[18:0],D[7:0],RDN,WRN
RDN
WRN
A[10:0],D[7:0],CASN, RASN, DWRN
ROMCSN
CS[5:0]N*
RASN
CASN
DWRN
DEBUGN
VDD
VDRAM
VBAT
VSS
ADVA
ADGA
FAN2
FAN MOTER
Fig. 3
5 – 7
TELEPHONE
LINE
RXIN
LINE
TXOUT
INTERFACE
FLASH
ROMCSN
MEMORY
FLASH
FLCSN
MEMORY
DRAM
NOTES: * ALTERNATIVE GPO, GPI OR GPIO LINES
**FOR SAMSUNG NAND-TYPE FLASH