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