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SK-60
POWER
ON
OFF
36 TONES |
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11 |
PIANO |
12 |
ELEC PIANO |
13 |
ORGAN |
14 |
ACCORDION |
15 |
GUITAR |
16 |
VIBRAPHONE |
21 |
VIOLIN |
22 |
STRINGS |
23 |
TRUMPET |
24 |
CLARINET |
25 |
SAX |
26 |
FLUTE |
31 |
SIREN 1 |
32 |
SIREN 2 |
52 |
DOO1 (MALE) |
33 |
TELEPHONE |
53 |
DOO2 (MALE) |
34 |
SPACE 1 |
54 |
BAH (BASS) |
35 |
SPACE 2 |
55 |
BOM (BASS) |
36 |
FUNNY |
56 |
VOICE PERCUSSION |
HUMAN VOICE |
HUMAN VOICE |
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41 |
DOO (FEMALE) |
(CYCLE) |
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42 |
BEE (FEMALE) |
61 |
DOO-BEE |
43 |
DEE (FEMALE) |
62 |
BOM-BAH |
44 |
BAH (FEMALE) |
63 |
DOO-BEE-DEE |
45 |
AHH (CHOIR) |
64 |
DOO-BEE-BAH |
46 |
OOH (CHOIR) |
65 |
DOO-BEE-DEE-BAH |
51 |
LA (CHILDREN) |
66 |
DOO-BEE-DOO-BAH |
36 |
SONG BANK |
@24 SONGS |
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11 |
VOICES OF REASON (ORIGINAL SONG) |
12 |
TWINKLE TWINKLE LITTLE STAR |
13 |
DOOIN’ MY THING (ORIGINAL SONG) |
14 |
ODE TO JOY |
15 |
LITTLE BROWN JUG |
16 |
SPRING FROM “THE FOUR SEASONS” |
21 |
WHEN THE SAINTS GO MARCHING IN |
22 |
FRÈRE JACQUES |
23 |
OLD MacDONALD HAD A FARM |
24 |
AULD LANG SYNE |
25 |
LONDONDERRY AIR |
26 |
ROW, ROW, ROW YOUR BOAT |
31 32 33 34 35 36 41 42 43 44 45 46
MARY HAD A LITTLE LAMB AMAZING GRACE
ACH DU LIEBER AUGUSTIN LONDON BRIDGE JOY TO THE WORLD GREENSLEEVES JINGLE BELLS SILENT NIGHT
O CHRISTMAS TREE YANKEE DOODLE SANTA LUCIA MARCH FROM “THE NUTCRACKER”
12 51 52 53 54 55 56 61 62 63 64 65 66
FREE SESSIONS POPS 1
BIG BAND
SWING
FOX TROT
POPS 2
WALTZ 1
WALTZ 2
POLKA
SKA
TEX-MEX
COUNTRY
BAROQUE
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VOLUME TEMPO |
1 |
2 |
3 |
TONE |
START/ MELODY |
MAGICAL |
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PAD |
PAD |
SAMPLE |
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STOP ON/OFF |
SINGER |
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EFFECT |
1 |
2 |
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SA |
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IC |
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MPL I NG M |
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A |
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B |
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4 |
5 |
6 |
SONG BANK |
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C |
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D |
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3 |
4 |
EDIT |
SAMPLING |
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TIME |
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CYCLE |
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TUNE |
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EFFECT |
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S |
M |
L |
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1-2 |
1-2-3 |
1-2-3-4 |
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RESET |
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RELEASE |
REVERSE |
LOOP |
CLEAR |
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SK-60
ELECTRIONIC KEYBOARD
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CONTENTS |
Specifications .......................................................................................................................... |
2 |
Block Diagram ......................................................................................................................... |
3 |
Circuit Description ................................................................................................................... |
4 |
Major Waveforms .................................................................................................................... |
7 |
Printed Circuit Board ............................................................................................................... |
8 |
Schematic Diagrams ............................................................................................................... |
9 |
Exploded View ...................................................................................................................... |
11 |
Parts List ............................................................................................................................... |
13 |
SPECIFICATIONS
GENERAL
Number of keys: |
32 |
Polyphonic: |
12-note |
Preset tones: |
18 |
Human voice tones: |
12 |
Voice cycles: |
6 |
Song bank: |
24-tune |
Free sessions: |
12 |
Pads: |
4 |
Pad settings: |
Sampled sounds, effects, voice percussion |
Sampling method: |
8-bit Differential Pulse Coded Modulation (DPCM) |
Sampling rate: |
13,021 kHz |
Sampling duration: |
2.4 seconds maximum |
Tuning control: |
Approx. 440 Hz |
Built-in speakers: |
4 inch dia. 2 W input rating: 2 pcs |
Terminals: |
7.5 V DC |
Power source: |
2-way AC or DC source |
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AC: AC adapter |
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DC: 5 AA size dry batteries |
Power consumption: |
2.0 W |
Dimensions(HWD): |
416 × 222 × 530 mm (16-3/8 × 8-6/8 × 20-7/8 inches) |
Weight: |
1.0 kg (2.2 lbs) excluding batteries |
ELECTRICAL
Current drain with 7.5 V DC: |
50 mA ± 20% |
No sound output |
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Maximum volume |
200 mA ± 20% |
with white keys F4 to C6 pressed in Bah tone (No. 44) |
80 μA (maximum) |
Power off |
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Speaker output level (Vrms with 4 Ω load): |
480 mV ± 20% |
with key C4 pressed in Accordion tone |
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Volume: maximum |
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Minimum operating voltage |
5.8 V |
— 2 —
BLOCK DIAGRAM
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RAM (256 Kbit) |
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LSI2 |
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HM62256BLSP-8 |
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MD0 ~ MD7 |
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MA0 ~ MA14 |
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Mic. input |
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KI4 ~ KI7 |
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Mic. Amp. |
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Q105, Q106 |
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Buttons |
3 — |
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CPU |
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LSI1 |
KO0 ~ KO7 |
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— |
Amp./Voltage Regulator |
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MSM6755B-10 |
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IC101 |
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Keyboard |
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AN8053N |
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APO |
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KI0 ~ KI3 |
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AVDD |
Q103 |
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VCC |
DVDD |
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Voltage Regulator |
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PG |
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Reset IC |
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IC1 |
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Q101, Q102, D102 |
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Q1, X1 |
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RE5VL40AA |
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Power Supply Circuit
CIRCUIT DESCRIPTION
KEY MATRIX
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KI0 |
KI1 |
KI2 |
KI3 |
KO0 (SO0) |
F3 |
C#4 |
A4 |
F5 |
KO1 (SO1) |
F#3 |
D4 |
A#4 |
F#5 |
KO2 (SO2) |
G3 |
D#4 |
B4 |
G5 |
KO3 (SO3) |
G#3 |
E4 |
C5 |
G#5 |
KO4 (SO4) |
A3 |
F4 |
C#5 |
A5 |
KO5 (SO5) |
A#3 |
F#4 |
D5 |
A#5 |
KO6 (SO6) |
B3 |
G4 |
D#5 |
B5 |
KO7 (SO7) |
C4 |
G#4 |
E5 |
C6 |
NOMENCLATURE OF KEYS
F#3 G#3 A#3 |
C#4 D#4 |
F#4 G#4 A#4 |
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KI4 |
KI5 |
KI6 |
KI7 |
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A |
1 |
1 |
Song |
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B |
2 |
2 |
Start/ |
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Stop |
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C |
3 |
3 |
Melody |
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On/Off |
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D |
4 |
4 |
Tone |
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Volume |
Magical |
5 |
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Up |
Singer |
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Volume |
Sampling |
6 |
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Down |
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Tempo |
Edit |
Effect |
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Up |
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Tempo
Down
C#5 D#5 |
F#5 G#5 A#5 |
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F3 |
G3 |
A3 |
B3 |
C4 |
D4 |
E4 |
F4 |
G4 |
A4 |
B4 |
C5 |
D5 |
E5 |
F5 |
G5 |
A5 |
B5 |
C6 |
— 4 —
CPU (LSI1: MSM6755B-10)
Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound waveform in accordance with the pressed key and the selected tone. The CPU also records the voice picked up the microphone, using the built-in ADC (Analog to Digital Convertor) and the RAM.
The following table shows the pin functions of LSI1.
Pin No. |
Terminal |
In/Out |
Function |
1 |
MA14 |
Out |
Address bus |
2 |
MWEB |
Out |
Write enable signal output |
3 |
NC0 |
— |
Not used. |
4 ~ 19 |
MA0 ~ MA13 |
Out |
Address bus |
13 |
MRDB |
Out |
Read enable signal output |
17 |
MCSB |
Out |
Chip select signal for the RAM |
20 ~ 27 |
MD0 ~ MD7 |
In/Out |
Data bus |
28, 29 |
NC1, NC2 |
— |
Not used. |
30 |
DGND |
In |
Ground source |
31 |
DVCC |
In |
+5 V source |
32, 33 |
XTL0, XTL1 |
In/Out |
20 MHz clock input/output |
34 |
NC3 |
— |
Not used. |
35 |
RSTB |
In |
Reset signal input |
36 |
RXD |
— |
Not used. Connected to +5 V. |
37 |
TXD |
— |
Not used. |
38 |
NMI |
In |
Power ON signal input |
39 |
APO |
Out |
APO(Auto Power Off) signal output |
40 |
NC4 |
— |
Not used. |
41 |
REFH |
Out |
Terminal for the built-in DAC/ADC |
42, 43 |
NC5, NC6 |
— |
Not used. |
44 |
DAOR |
Out |
Sound waveform output |
45 |
NC7 |
— |
Not used. |
46 |
AVdac |
In |
+5 V source for the built-in DAC/ADC |
47 |
DAOL |
— |
Not used. |
48 |
REFL |
Out |
Terminal for the built-in DAC/ADC |
49 |
AGdac |
— |
Not used. |
50 |
AGadc |
In |
Ground source for the built-in ADC |
51 |
ANI |
In |
Analog signal input |
52 |
AVadc |
In |
+5 V source for the built-in ADC |
53 |
NC8 |
— |
Not used. |
54 |
MOD0 |
In |
Mode selection terminal |
55, 56 |
MOD1, MOD2 |
In |
Mode selection terminal |
57 |
P40 |
In |
APO cancellation signal input |
58 ~ 65 |
KI0 ~ KI7 |
In |
Terminals for key/button input signal |
66 ~ 73 |
KO1 ~ KO8 |
Out |
Terminals for key scan signal |
74 ~ 78 |
— |
— |
Not used. |
79 |
LVCC |
In |
+5 V source |
80 ~ 95 |
— |
— |
Not used. |
96 |
LGND |
In |
Ground source |
97 ~ 100 |
— |
— |
Not used. |
— 5 —
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