Kyocera FS-1800 - Main Board; Main Board KP-777 for FS-1800;1800 N Models; Operation of Circuit Boards

4-26
FS-1800/1800N | FS-3800/3800N
4-3-2 Operation of circuit boards
(1) Main board
Main board KP-777 for FS-1800/1800N models
Figure 4-3-4 Main board KP-777 circuit block diagram
SDRAM
U10
System
DIMM
[board]
CSN [1:0],
OEN0,
WEN0
YS01
U03-U05
Buffers
LA [22:2]
ROMA [4:2]
CPUD [31:0]
PVIDEO [7:0], BD, FSYNC, RSTOUTN
XLIDATA, SRCCLKN
U16
CSN2,
OEN0,
WEN0
CPUD [31:24]
LA [3:2]
CPUD [15:0]
CPUA [31:0]
CPUD [31:0]
U01
BCLK, BGN,
TAN, TEAN,
RSTOUTN, CPUINTN
ABBN, DBBN, TBSTN,
TSIZ [2:0], TT1, TT3
X01
X’tal
50.0000 MHz
X02
X’tal
25.50629 MHz
SDA [12:0], SDBA [1:0]
SDD [31:0]
SDCLK, SDCKE,
SDCSN [5:0],
SDRAS, SDCAS,
SDWEN,
DQMUU, DQMUM,
DQMLM, DQMLL
IICSDA, IICSCL
SCLK, SI, SO, SDIR, BD,
ENGIRN, SBSY, VDFON,
VDOUTP, VDOUTN,
FPDIR, FPCLK, PFDAT
YC07
YC01
Centronics
Buffer
Serial
Driver
P1284HD,
ACK,
BUSY,
PERROR,
SELECT,
FAULT,
P1284DIR,
SELECTIN,
STROBE,
AUTOFD,
INIT,
P1284DIR
U17
U22T
U31
U18,
U19E
CFA22,
CFA [11:2]
YC05
CFD [15:0]
CFCSM1, CFCSN2,
CFOEN1, CFWEN1,
CDET1A, CDET1B,
CFRST1, CFWAIT1
U06-U07
Buffers
EXTBOEN,
EXTDIR
U08, U09S
ROMA1
LA [21:2]
FONTs
CSN [3:2]
OEN1,
(WEN0)
LD [15:0]
LA22,
LA [11:2]
YC06
Option
hard disk
(Microdrive)
LD [15:0]
CFCSN1, CFCSN2,
CFOEN2, CFWEN2,
CDET2A, CDET2B,
CFRST2,
CFWAITN2
LA [16:2]
LD [15:0]
YC04
KUIO
KUIOCSN1
IORN1, IOWN1,
OPRDY1,
DMAACKN1
OPRST1,
IODTACKN1,
OPIRN1,
DMAREQ1
U12-U15
Buffers
EXTBOEN,
CFOEN1
+5 V
U20
+3.3 V
YC03
Serial
Interface
YC02
Parallel
Interface
CPU
PowerPC405GF
200 MHz
Regulator
+5 V
U24
+3.3 V
Regulator
+5 V
U28
+3.3 V
Regulator
+5 V
U21
+2.5 V
Regulator
Engine
Board
2nd Optional
Interface
Option
memory card
(CompactFlash)
,
Image
chip
U02
ASIC
YS02
YS03
Expanding
SDRAM
(DIMM)
Expanding
SDRAM
(DIMM)
AND NAND
XTXD,
XDTR,
XRTS,
XDSR,
XCTS,
XRXD,
RSSEL