Kyocera KM-1500 - Main Board

2DC
2-3-1
2-3-1 Main board
Figure 2-3-1 Main board circuit block diagram
ASIC
9.71MHz
(SYSTEM)
19.42MHz
(MEMORY)
2.5V Regulator
ASIC debugger I/F
DBOUT7-0
DBOUT7-0
DQM3-1, RASN, CASN
WEN, BA1, BA0
CK2, CK3, MCS4N, MCSGN
IICSCL
IICSDA
SDRAM data bus
SDRAM address bus
SDRAM
8MB
SDRAM
8MB
DIMM
slot
APC I/F
VDATA
PLGCLK
SCKN, FGSO
CSAION
CPUD7-0
RD
CSFLASHN
CPUD7-0
CPUD7-0
CPUA17-0
CPUA14-0
WR, RD
WR, RD
CSSRAMN
Decoder
Debugger
connector
CPUA23-21
DBRXD
EEDIO
KEYON, KEY1N, EY2N
SCANON, SCAN1N, SCAN2N, SCAN3N
SCAN4N, SCAN5N
LEDON, LED1N, LED2N, LED3N
LED4N, LED5N, LED6N, BUZERDRN
EEPROM
Operator panel I/F
Scanner I/F
EESCL
DBTXD
CODE
DIMM
4Mbit
Flash
ROM
4Mbit
SRAM
256kbit
CSROMN
CPUA17-0
Engine I/F
CPU data bus
CPU address bus
RSTN
SBSY, EGSI, SDIR, EGIRN, PDMASKN
PDMASKN
OVSYNCN
PDN
OUTPEN
SAMPLEN
CK1
CK0
MCSON
+5V
Xtal (VIDEO)
17.483375MHz
Xtal (CCD)
14.798200MHz
+2.5V
CCDG(O)
IMG7-0
ADCCLK, SHD, LCLP
OEB, AFESDENB
AFESDIN, AFESDCLK
Xtal
(SYSTEM)
9.71MHz
CPUCLK
9.71MHz
PLL
READYN
INTREQN
RD, WR
CPUA18-0
CPUD7-0
A F/E
CCDCLKN, CCDCLK, RSN, CPN, SH
CCDG(E)
CCDR
CPU