DV-4070-B/4900/DVF-R7030-B/R9030
5
CIRCUIT DESCRIPTION
Port No.
Port Name
I/O
Description
1
WAIT
O
Optical Device Control(ODR) wait
2
NRD
O
Read(RD) port for ODC/AV
3
-
-
No use
4
NWA
O
write(WR)
5
RAMCS
O
Chip Select(CS) Flash RAM
6
ODCCS
O
Chip Select(CS) ODC
7
AVCS
O
Chip Select(CS) AV decoder
8
RAMCS
O
Chip Select(CS) DRAM for TEXT buffer
9
SCLOCK
O
Clock of Video DAC(ADV7172)
10
SDATA
O
Data of Video DAC(ADV7173)
11
FRD
O
Read(RD) port for Flash ROM
12
MODE2
I
H: Chip Select 0, 8bit bus
13-16
CPUADR0-3
O
Address A(0-3)
17
Vdd
I
+5V
18
SYSCLK
O
AV decoder HCLK
19
Vss
O
GND
20
XI
I
Clock input port
21
XO
O
Clock output port
22
Vdd
I
+5V
23
CLK
I
13.5MHz clock input port
24
OSCO
O
No use
25
MODE2
I
CPU mode: H=Memory enhanced mode
26-33
CPUADR4-11
O
Address A(4-11)
34
Vdd
I
+5V
35-42
CPUADR12-19
O
Address A(12-19)
43
Vss
-
GND
44
196BSY
I
Busy of writing jig
45
256BSY
O
Busy of unit
46
ATTL
O
Analog output attenuator L: active
47
-
-
No use
48
KMODE
I
writing mode. H=writing. L=normal.
49
AMUTE
O
Audio mute
50
ADSCEN
I
CIRC enable
51
-
O
No use
52
SLEEP
O
Front End Processor(AN8825) standby
53
FRNTH
O
Front DAC selector. H=front.
54
Vdd
-
+5V
55
FEPEN
I
Front End Processor SEN
56
CLKSEL
O
Sampling frequency selector. L=44,88,176kHz, H=48,96,192kHz
57
STBDAC2
O
DAC2(AK4393) Strob
58
STBSP
O
Serial/parallel(NJU3711) Strob
59
STBDAC1
O
DAC1(AK4393) Strob
60
ADSC
O
Advanced Digital Servo Control serial data transfer.
61
Vss
O
GND
62
-
O
No use
63
XS
O
Chip Select of E2PROM
64
SCSIEN
O
Enable control of writing jig. L=enable
65
DARK-DET
I
Video signal check by Y-signal
66
Vdd
I
+5V
67
SCLKO
O
Sub-microprocessor clock
68
SIO
I
Sub-microprocessor data input
69
SOO
O
Sub-microprocessor data output
70
SCLKI
O
Clock for every Ics
MAIN MICROPROCESSOR: MN102LP25G(X35,IC500)
