Roland Va-3 - Block Diagram

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B
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D
E
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H
I
L
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14
11
VA-3
Jan, 2001
BLOCK DIAGRAM
A
IC1
A
A
WA
IC17
D
UCAS
ADDRESS BUS
DRAM
IC11
EA
WE
D
A
A
D
D RAM
WD
EWE
RAS
WAVE ROM
XRST
DATA BUS
IC12
XRST
A
D
IC5
RXD0
TXD0
D
IC2
CAS
ED
RAS
ED
XP
SH-uC
WAVE ROM
IC13
A
D
128 M 32 M
D[0-15]
CKIN
D[0-7]
IC10
LCD
IC4
IC11
RX2
XCS4
CLK
A
IC5,IC6
IN
Q1-Q4
D.BEAM
PA8
FDD
VD
LATCH
D[0-7]
XRST
D BEAM
&
IC5
A[1-20]
XCS4
PD[0-7]
XTAL
XCS
XRST
IC8
16MHz
LCD ADAPTER
D[0-15]
XSSEN
A0
MATRIX
LCD
AN6,7
XPORT
XCE0,1
MIDI
XCS6
CS
FLASH
XECS
SCAN
SH-uC
IC3
MATRIX
TX1
RESET
[0,2,4-9]
D[0-15]
TX1
SH GA
A0,1
20MHz
PHOTO
BUFFER
RX1
D[0-7]
XRST
SRAM
DRIVER
IC3
IC26;IC27;IC28;IC29
XRST
X1
3.5"
CNTR
DECODER
INVERTER BOARD
A0,1
MUTE
MAIN BOARD
16Mbit
BENDER
XWP
XCS6
XRST
XRES
1/4 VGA
ALPHA
DIAL
D[0-1]
X2
IC19
AN0,1,2
D[0-15]
A[0-21]
LS[0-3]
D[0-7]
VA
INVERTER
LED
A[1-12]
ROM
16Mbit
TOUCH
SCREEN
LOGIC
DRAM
CKOUT
KEY
IC3
IC47
RX1
IC12
TX2
XCS2
XCS
D
IC1,IC2
OUT
BUFF.
D216;D215;Q16;IC10
A[0-5,19-21]
IC20
VIDEO
DRIVER
WVOUTAN4
MODULATION
XRAS
XCS2
CK
LCD
DECODER
XCS
SCSIRST
XTAL
32Mbit
XRP
CAS
LLCK
OSC1
CONTRAST
AN3,5
PORT
IC16
A[1-21]
TOUCH SCREEN
AN 1,2
RAS,CAS
SS[0-3]
FDC
PORT1
Q7
SWITCH
IC5
IC21
MASK
PHONES
X2
24.576MHz
16 M
4 M
MASK ROM
4 M
RX0 TX0
XPGS4
BOARD
CONTROL
BOARD
LINE
OUTPUT
LINE
INPUT
L R L R
D/A
DATA
LOUT
ROUT
LPF
IC11
IC14
IC10
AMPL.
IC9
MIXER
SUST/EXPR.
LCD
CONTRAST
INPUT REG.
IC18
AMPL.
VOLUME
IC7
BUFFER
MUTE
CNTRL
SQUELCH
Q4,Q5,Q9
MUTE
IC2
BUFFER
Q2,Q3
AN3
POWER AMPLIFIER
&
POWER SUPPLY
POWER
INVERTER
POWER
AMPLIFIER
-12V
R+
R-
L+
L-
SPEAKER RSPEAKER L
IC2
BOARD
+5V
+12V
VPWR
+
-
SUPPLY
+5V
IN
OUT
KEYBOARD 61 KEYS
DC IN
12V 2A
ADDRESS BUS
CS BUS
XRST
10MHz
20MHz
DATA BUS
D
1
4
2
5
3 1
4
2
5
3
8
7
3
2
4
5
1
8
7
3
2
4
5
1
3 2 1
JK1
1
2
3
POWER SWITCH
1 2
20MHz
X1
IC6, IC5