DP-4090/5090/D-S300
6
CIRCUIT DESCRIPTION
1. Main Microprocessor : uPD78055GC-A02 (X32-, IC19)
1-1 Microprocessor periphery block diagram
55 CLK
56 LAT
57 DATA
19 ~ 26
58 SENSE
(AD0 ~ AD7)
73 FOK
27 ~ 32
62 SCOR
(A8 ~ A13)
16 SUBQ
66 GFS
RD 40
18 SQCK
WR 41
59 MON
WAIT 42
54 MUTEG
ASTB 43
TYPE 76
10 SCLK
8 SRDT
DEFECT 50
63 DQSY
uPD 78055GC-A02
39 OPEN_SW
38 CLOSE_SW
36 SLT_SW
37 POS_SW
44 OPENM
45 CLOSEM
MLEN 1
MCK 2
MDT 3
6 CLK
5 SDA
15 STANBY
46 LDC
A/D PEAK 79
80 RMUTE
REM 61
12 DATA
13 CLK
8/16bit
14 CE
SDATA 53
SBUSY 52
77 A/D KEY0
78 A/D KEY1
RESET 60
CXD2507AQ
CLK
XLT
DATA
SENS
FOK
SCOR
SQSO
GFS
SQCK
MON
S300 / 4090 MUTE
X32 IC19
X32 IC2
SM5843ASI MUTE
DP-5090
LC89170M
SCLK
(CD TEXT)
SRDT
DQSY
X32 IC18
HM62256
BLFP 8T
(SRAM)
OE
WE
CE
LE
5.0V : D-S300
2.5V : DP-5090
0.0V : DP-4090
CDM-30
MECHA SW
LOADING
DRIVER
SM5843ASI
MLEN
MCK
MDT
DP-5090
X32 IC3
SGATE
SCK
SDATA
KAN03
X2C00P
(EEPROM)
SLK
SDA
X32 IC25
DP-5090 / DP-4090
STANDBY LED
LASER ON / OFF
ANALOG METE
LC75712E
(DOT DRIVER)
FIP15
XM1BA
(FL)
A/D KEY
A / D PEAK SEARCH
DEFECT
PORT VOLT
A/D0
A/D1
4. 8 ~ 4. 2
OPEN / CLOSE
POWER (*2)
4. 2 ~ 3. 4
PLAY / PAUSE
TEXT DISPLAY (*1)
3. 4 ~ 2. 5
STOP
PEAK SEARCH (*1)
2. 5 ~ 1. 6
UP
FF (*1)
1. 6 ~ 0. 8
DOWN
FB (*1)
0. 8 ~ 0. 2
REPEAT (*2)
RANDOM (*2)
(*1) DP-5090/DP-4090 ONLY
(*2) D-S300 ONLY
X32 IC21
X25 IC1
X14 IC4
REMOCON
8bit / 16bit
SERIAL COMMU-
NICATION
RESET
