R (with price) CTK-650 CTK-650 ELECTRONIC KEYBOARD
CONTENTS SPECIFICATIONS ....................................................................................................1 BLOCK DIAGRAM ...................................................................................................2 CIRCUIT DESCRIPTION CPU (HD6433298A16P : H8/329) .....................................................................3 DIGITAL SIGNAL PROCESSOR, LSI-S (HG51A115A01FD) ..........................4 KEY TOUCH LSI (HG52E35P) .................................................
SPECIFICATION Number of keys: Polyphony: Preset tones: Magical preset: Auto-accompaniment: Song memory: Registration memory: Sound control pads: Digital effects: DEMO tunes: Other functions: Speakers: I/O terminals: Power supply: Auto power off: Power consumption: Dimensions: Weight: Accessory: 61 32-note(max.
BLOCK DIAGRAM 7-Segment LED RAM-1(64K) MN4464-08L-1 LO0~LO4 LED driver BA612 KO0~4 La ~Lp KC0~KC7 Key Touch LSI Address Bus Keyboard SI0~SI7 KO0~KO5 CPU D0~D7 HG52E35P HD6433298A16P (H8/329) Buttons KI1~KI7 FI0~FI7 VDD 100K MIDI OUT EA0~EA12 RA0~RA19 LSI-S ROM(16M) RAM-2(64K) MN4464-08L-2 HG51A115A01FD TC5316200CP-C079 Power Switch IN ED0~ED7 RD0~RD15 WCK1 SLOP BCK D/A Converter µPD6376CX Filter Filter Main Volume Output Power Amplifier Speakers LA4598 —2—
CIRCUIT DESCRIPTION CPU(HD6433298A16P : H8/329) The 16-bit CPU contains a 32K-byte ROM, a 1K-byte RAM, an 8-bit A/D converter, timers and I/O ports. The CPU accesses to the DSP, Key Touch LSI, RAM, buttons and LEDs. But the CPU directly receives MIDI and pedal signals. Pin No.
DIGITAL SIGNAL PROCESSOR, LSI-S (HG51A115A01FD) The LSI-S is a 16-bit DSP(Digital Signal Processor) and accessable to 16M-bit sound source ROM and to 64Kbit RAM. The DSP can read data of 32 polyphonic note from the ROM and provides two 16-bit serial dat with timing signals to each channel's D/A converter. Pin No.
KEY TOUCH LSI(HG52E35P) By counting the time between the first key input signal FI and the second SI from the keyboard unit, the key touch LSI detects key velocity of 256-step. Then the LSI sends the CPU note numbers and their velocities. CPU HD6433298A16P Key Touch LSI HG52E35P P52/SCK A12 A14 P44/-WR P42/IRQ0 P43/-RD RESB CCSB KC0~KC7 CWRB CRDB Keyboard FI0~FI9 SI0~SI9 Pin No.
POWER AMPLIFIER(LA4598) LA4598 is 2-channel power amplifier with standby switch. Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Terminal Power GND Ch1 B.S. Ch1 OUT VCC Ch1 N.F. Ch1 IN D.C. Pre GND Standby Ch2 IN Ch2 N.F. Ch2 OUT Ch2 B.S. NC In/Out In Out In In In In In In In Out - Function Ground(0V) source. Terminal for bootstrap capacitor. Channel 1 output. +9V source. Negative feedback input. Channel 1 input. Terminal for decoupling capacitor. Ground(0V) source. Control signal input.
BUTTON MATRIX KI1 KI2 KI3 KO0 3 0 KO1 SPLIT KO2 KI4 KI5 KI6 KI7 ACCOMP VOLUME 2 1 SONG NO.
KEY MATRIX KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7 FI0 C2 1 C#2 1 D2 1 D#2 1 E2 1 F2 1 F#2 1 G2 1 SI0 C2 2 C#2 2 D2 2 D#2 2 E2 2 F2 2 F#2 2 G2 2 FI1 G#2 1 A2 1 A#2 1 B2 1 C3 1 C#3 1 D3 1 D#3 1 SI1 G#2 2 A2 2 A#2 2 B2 2 C3 2 C#3 2 D3 2 D#3 2 FI2 E3 1 F3 1 F#3 1 G3 1 G#3 1 A3 1 A#3 1 B3 1 SI2 E3 2 F3 2 F#3 2 G3 2 G#3 2 A3 2 A#3 2 B3 2 FI3 C4 1 C#4 1 D4 1 D#4 1 E4 1 F4 1 F#4 1 G4 1 SI3 C4 2 C#4 2 D4 2 D#4 2 E4 2 F4 2 F#4 2 G4 2 FI4 G#4 1
WIRING DIAGRAM M616T-KY2M M616T-KY1M JA CONNECTOR JB-CONNECTOR 1 17 KC0 KC1 KC2 KC3 KC4 KC5 FI4 SI4 KC6 KC7 SI5 SI6 SI7 FI5 FI6 FI7 17 FI1 FI2 FI0 SI0 SI1 SI2 SI3 FI3 KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7 1 1 1 17 JA-CONNECTOR JB-CONNECTOR DC JACK 17 LSP PG PHONES/OUTPUT SUSTAIN M5711-MA1M MIDI IN MIDI OUT 12 1 JD-CONNECTOR 12 BATT.+ BATT.
IC LEAD IDENTIFICATION AND INTERNAL CIRCUIT UPD6376CX (D/A converter) TIMING GENERATOR SHIFT REGISTER LATCH LRCK 13 LRSEL/RSI 14 SI/LSI 15 CLK 16 4/8 fs SEL 1 MAIN DAC 11 L.OUT SUB DAC 10 L.REF SUB DAC 9 R.REF MAIN DAC 6 R.OUT D.GND 2 4 D.VDD 3 N.C. 5 12 A.GND 8 7 A.
M5218APR S-8053ANO 8 VDD 2 7 6 5 3 GND 4 VCC + 1 OUT + 1 VSS 3 2 S-81350HG S-8053ANO 2SB1274 1 B C E 2SC1740 DTA114TS 2SA933 2 2SB1240 2SD1858 E C B E C 3 B — 11 —
PCB VIEW & MAJOR WAVEFORMS 3 6 2 5 14 15 18 19 1 4 7 16 17 10 11 12 13 9 8 — 12 —
SCHEMATIC DIAGRAM M5711-MA1M 2 14 15 5 3 6 4 7 16 17 18 19 9 1 8 10 11 12 13 — 13 —
SCHEMATIC DIAGRAM M5711-CN1M — 14 —
PARTS LIST CTK-650 Notes: 1. Prices and specifications are subject to change without prior notice. 2. As for spare parts order and supply, refer to the "GUIDEBOOK for Spare parts Supply", published separately. 3. The numbers in item column correspond to the same numbers in drawing.
N N N N N N N N N N N N N N N N N Item Code No.
N Item N N N N N N N N JC N JA N N N JB Code No.
N Item N 1 2 3 4a 4b 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 20-1 20-2 20-3 20-4 20-5 N N N N N N N N N N 23 24 25 26 Code No.
EXPLODED VIEW — 19 —
MA0200941A
