Roland Va-7 - BLOCK DIAGRAM

A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
U
J
K
12345678910 12131415161718192021222324252627282930
17
11
VA-7
July, 2000
BLOCK DIAGRAM
D[0-15] D[0-15]
DRAM
FLASH
RAS,CAS
A[0-21] D[0-15]
XRP
XWP
A[1-20]
XRAS
CAS
XCS6
XCS4
XCS2
XRST
PA8
A[0-5,19-21]
D[0-7]
XCS4 XCS2
SH GA
CKIN CKOUT
XECS
SS[0-3]
LS[0-3]
XSSENLLCK
XRST
PD[0-7]
CK
X1
XTAL
KEYBOARD
3.5"
FDD
IC20
XRST CLK XCS
A0,1
D[0-7]
KEY
SCAN
FDC
D[0-7]
A0
OSC1
XRES
XCS
LCD
CNTR
VD
VIDEO
SRAM
AD
20MHz
IC10 IC3
SH-uC
PORT1
VA
1/4 VGA
VOLUME
DECODER DECODER
LATCH
DRIVER
DRIVER
IC5,IC6
IC1,IC2
PHOTO
FOOT FOOT
SWITCHIN OUT THRU
BUFFER BUFFER
BUFFER
CONTROL BOARD
PEDALS
+12V ANG
-12V ANG
SWITCHING
IC6 IC5
AC INLET
POWER SWITCH
INVERTER
INVERTER BOARD
LCD
IC4
POWER SUPPLY
IC7
MATRIX
SWITCH
LED
MATRIX
XRST XCS
A0,1
D[0-7]
XRST CLK
D[0-7]
SUBCPU
A[0-7]
PEDAL SWITCH
SUSTAIN
RX1 TX1
XCS
LCD
CONTRAST
ALPHA DIAL
PART-BAL
VR3
BUFF.
BUFF.
PB[3-7]
AN0,6,7
AN3,5
IC1
MIXER I/V I/V
RELAY
IC4
PHONES BOARD
L/M
R
L/M
R
MASTER
LPF
LPF
+5V DIG
+5V LCD
+5V FLOPPY
RESET
IC5
IC1
XPORT
PORT
D[0-1]
IC8
SCSIRST
MUTE
XRST
WVOUT
RL1
IC9IC3IC5
IC11
IC12
[0,2,4-9]
IC21
A[1-12]
XCE0,1
IC16
X2
16MHz
XTAL
IC13
MAIN BOARD
AUDIO BOARD
MIDI BOARD
IC3,IC4Q1-Q11
MIDI
INPUT
OUTPUT
IC12,IC13,Q3
MUTE
+17V POWER AMP
SWM-80
DEBOUNCE
IC10;IC11;IC12;IC13
IC9
RELAY
DRIVER
AMP
AMP
TWETEER L
SPEAKER L
TWETEER R
SPEAKER R
L
R
RELAY
AMPLIFIER BOARD
IC6
Q1,Q2
D BEAM
AN4
IC26;IC27;IC28;IC29
D.BEAM
D216;D215;Q16;IC10
EQU
IC1,IC2
D[0-15]
MASK
ROM
XCS6
A[1-21]
IC19
LCD ADAPTER
64Mbit 16Mbit
XPGS-6
RX2 RX3 TX3TX2
RX1 RX2TX2TX1
RX0 TX0
AUDIO OUT
AUDIO OUT
VARIPHRASE
BOARD
MIKE
AUDIO IN1
AUDIO IN2
AUDIO IN
+5V +12V -12V
+5V +12V -12V
16Mbit
TOUCH SCREEN
TOUCH
SCREEN
LOGIC
CS
AN 1,2
AN0,1,2
INPUT
ZIP
IDE
A[0-3]
INTERFACE
IDE
IC17
D[0-15]
XIDE
BENDER
&
MODULATION
IC7
BUFF.
RIBBON
FC7-PEDAL
61TP9/AT
AFTER TOUCH
AFTER TOUCH
XRST
10MHz
20MHz
ADDRESS BUS
DATA BUS
CS BUS
1
4
2
5
3 1
4
2
5
3 1
4
2
5
3
3 1 2 3 1 2 3 1 2
12
3
1
2
3
1
2
3
1
2
3
1
2
8
7
3
2
4
5
1
8
7
3
2
4
5
1
3
1
2
1
4
2
5
3
76
8