Kyocera FS-1920 - Main Board

2FP/2FY/2FR
2-3-1
2-3-1 Main board
For FS-1920 model (KP-1053)
Figure 2-3-1 Main board (KP-1053) circuit block diagram
Digital
Transistor
74LV
32A
YC6
USB I/F
USBDN
CDD15-8 EDB15-8
EBIU Data bus
EBIU Address bus
VBUS
USBDP
USBINIT
EBA22, EBA10-1
EBA22, EBA10-1
CDRST1
CDET21, CDRST2
CDWAITN
RESETN
CDWAITN
EXTOR11,12
CDCSN2
CDWAITN
EBOEN1, EBWEN1
CDET CDCSN1
EXTIOR1 CDET1,2
YC8
RESETN
FPCLK
FPDIR
FPDAT
VDEONSPL
PDN
VDATAP, VDATAN
EGSI, SCKN
SCK, SO, SEL[0-2]
SLREADY
OP24V, OP5V
EGSO, SBSY, SDIR, EGIRN
X2
X’tal (System)
X’tal (USB)
X’tal (Video)
25.0000 MHz
48.0000 MHz
X3
X1
YC4
YC7
Parallel I/F
30.2394 MHz
Engine I/F
Option I/F
CXIN
VXIN
VXOUT
U2
U16
48MHZIN
PNSELIN
PNSTROBE, PNAUTOFD,
PNINIT
PNACK, PBUSY, PPERROR
PSELECT, PFAULT
PPDATA7-0
YC5
PDATA7-0
NSELIN
PDATA7-0
Option serial I/F
P1284DIR
DTR, RTS, TXD
CTS, DSR, RXD
RSSEL
YC9
DBTXD
DBRXD, DBCLK
[Debugger connector]
YC10
TDO
TDI, TCK, TMS, HALTN
RISC watch connector
U13
3.3 V Regulator
+5 V1
+3.3 V1
SDRAM Data bus
SDD31-0
SDD15-0
SDD31-16
SDCSN1-2
SDA12-0
SDCLK
SDCLK
SDD31-0
SDA12-0
SDA12-0
SDRAM Address bus
YS02
Option
SDRAM
DIMM
Slot
U11
IIC
EEPROM
IICSCL
IICSDA
SDA12-0
SDCSN0
DQMLM, DQMLL
DQMUU, DQMUM
RASN, CASN, WEN, BA1, BA0, SDCLKE
OPRSTN
OPRDY, DMAACKN, IORN,
IOWN, EBCSN4
DMAREQ, OPACKN, OPIRN
EBA15-1
YC1
Option I/F
KUIO-LV (3.3 V)
EBD31-16
EBD31-0
U4
API ROM
Socket
EBD31-16
EBD31-16
EBD31-16
U3
EBA21-1
EBA21-1
EBCSN1, EBOEN2
EBCSN0, EBOEN2
EBA21-1
EBA21-20
EBCSN0, EBCSN1, EBOEN0, EBWEN0
YS1
System
DIMM
Slot 1
(Code ROM)
SDRAM
U09
SDRAM
U10
YC2
Option
Memory
card
socket
EDB15-0
YC3
U4
Option
Hard
disk
socket
CPU
U01
CDD7-0 EDB7-0
U5
PowerPC 266 MHz
(Core ASIC)
U1
U12
Font
Mask ROM
74LV
00
Q1
U8
U7