Block Diagram（ブロックダイアグラム - Yamaha PSR-S650 Service Manual

*1: Expandable up to 512Mbit （512Mbitまで拡張可能）
*2:
Expandable up to 256Mbit （256Mbitまで拡張可能）
USB
TO DEVICE TO HOST
CN9 CN8
IC8 (56P)
P2ROM
128Mbit (*1)
<Program>
CONTRAST
VR1
IC18 (5P)
USB
SWX02
Bus Power
Controller
IC3 (316P)
Reset
Bus clk : 67.7376 MHz
Int. clk : 135.4752 MHz
IC2 (5P)
Ext. clk : 33.8688 MHz
16.9344MHz
Ctystal
X1
48MHz
Ctystal OSC
X2
Key Scan CPU
MKS
Level
IC16
Converter
5MHz
(44P)
Ceramic
IC12 (14P),
X3
IC22 (14P)
CN6
CN5 CN4
(12P)
(7P) (5P)
CN5
(7P)
(C1–B3) (C4–C6)
CN4 CN3
(12P) (12P)
LCD
UNIT
LCD
LED Back
320ｘ 240
Light
STN
CN10 (2P) CN2 (14P)
IC9 (56P) IC5 (54P)
FLASH ROM SDRAM
16Mbit (*1) 128Mbit (*2)
<Data> <WORK>
LCDC
IC7 (64P)
CPU
DAC
24bit
LPF
IC15 (16P) IC17 (8P)
IC4 (5P)
+3.3V
Dropper
FlashROM
512Mbit
IC6 (5P)
Wave
+1.2V
IC13 (56P)
Dropper
CN2 CN1
(5P) (12P)
SW & LED
Matrix
LD101–121,
EC701 SW101–129,
SW131,133,135,137,139,
SW141–156
CN701 (3P)
TR101–123
LED
DRIVER
CPU
E-PNS2a
IC101
(64P)
X101
CN104 (8P)
Level
SUSTAIN
Converter
JK401
IC12 (14P)
CN401 (8P)
IC21 (8P)
DC/DC
Converter
IC20 (8P)
+5V
CN401 (8P)
DC/DC
IC19 (5P)
CN104 (8P)
+5V
Dropper
CN103 CN204
(27P)
TOUCH RESPONSE
SW & LED
Matrix
LD301–307,
SW301–360
CN102 CN301
(15P) (15P)
PHONES/
16V
OUTPUT
+ –
JK403 JK402
CN405
(2P)
CN406
(4P)
Power AMP
12W x 2
LA4625
IC401 (14P)
CN404
(2P)
IC201
(8P)
VR501
CN202 CN501
(27P) (5P) (5P)
PITCH
VR601
BEND
CN601 (3P)
CN203 (3P)
SW & LED
Matrix
LD201–213,
LD241,242,
SW203–258,
SW261–270
SW201,202
AC-IN
PA-300C/PA300B/PA-301
AC ADAPTER