- 40 -
3. H/W Circuit Description
MIDI SOUND circuit description
The YMU762 has features as described below.
• Simultaneous generation of up to 40 tones:
• Voice Synthesis function by HV Synthesizer.
• Time Fluctuation Low-pass Filter function by AL Synthesizer.
• ADPCM/PCM stream playback.
• Default voices for FM and Wave Table synthesizer are in a ROM, and voice registration to SRAM is
possible.
• Digital Audio Input function. (Valid only for slave mode.)
• Digital Audio Output function. (Fixed to Fs=48 kHz. Valid only for master mode.)
• Speaker Amplifier and Equalizer circuit are integrated.
• Stereo head phone amplifier and bus boost circuit are integrated.
• External output amplifier is integrated.
• PLL is integrated. Master clock input up to 27 MHz is available. TCXO available
• 16-bit stereo D/A converter is integrated.
40 POLY MELODY CHIP
R201
33K
47p
C206
R206
0
1000p
C210
C212
0.1u
C211
0.1u
VBAT
C204
47p
R204
3.3K
R203
120K
_WR
32
2
LED
MTR
19
NC
5
6
PLLC
SPOUT1
17
SPOUT2
18
SPVDD 15
16
SPVSS
VDD
7
VREF
9
8
VSS
_CS
29
3
_IRQ
31
_RD
4
_RST
28
30
A0
1
CLK1
D0
27
D1
26
D2
25
D3
24
D4
23
22
D5
21
D6
20
D7
12
EQ1
EQ2
13
EQ3
14
HPOUT_L
10
HPOUT_R
11
IOVDD
YMU762C-QZ
U202
C200
22n
V_SRAM
C209
0.1u
0.022u
C202
R200
39K
C203
47p
0
R202
D(6)
D(7)
MIDI_SPK_I
MCLK
MELODY_INT
LCD_RESET
_WR
_MIDI_CS
A(1)
_RD
D(0)
VIBRATOR
D(1)
D(2)
D(3)
D(4)
D(5)
D(0:7)
SPKN
SPKP
Figure 21. MIDI sound Circuit
Z3X-BOX.COM
Содержание MG220
Страница 1: ...Date May 2006 Issue 1 0 Service Manual MG220 Service Manual Model MG220 Z 3 X B O X C O M ...
Страница 3: ... 2 Z 3 X B O X C O M ...
Страница 5: ...Z 3 X B O X C O M ...
Страница 32: ...3 H W Circuit Description 31 Figure 14 Power Supply Scheme Z 3 X B O X C O M ...
Страница 46: ...4 TROUBLE SHOOTING 45 4 TROUBLE SHOOTING 4 1 Main Components Placement Z 3 X B O X C O M ...
Страница 91: ...5 DOWNLOAD 90 5 2 Download Procedure 5 2 1 Computer Program file MultiGSM EXE Click Z 3 X B O X C O M ...
Страница 93: ...5 DOWNLOAD 92 5 2 3 Configuration Setting C GSMULTI Model MG220 dll Z 3 X B O X C O M ...
Страница 94: ...5 DOWNLOAD 93 5 2 4 Press Start Button Z 3 X B O X C O M ...
Страница 95: ...5 DOWNLOAD 94 5 2 5 After Start Button Which Stand by condition Z 3 X B O X C O M ...
Страница 96: ...5 DOWNLOAD 95 5 2 6 SW downloading Condition MG220 Z 3 X B O X C O M ...
Страница 97: ...5 DOWNLOAD 96 5 2 7 SW downloading END Condition Z 3 X B O X C O M ...
Страница 99: ...6 SERVICE AND CALIBRATION 98 4 Click on CALIBRATION START button Z 3 X B O X C O M ...
Страница 108: ... 107 8 pcb layout Z 3 X B O X C O M ...
Страница 109: ... 108 8 pcb layout Z 3 X B O X C O M ...
Страница 113: ... 112 Z 3 X B O X C O M ...
Страница 129: ...Note Z 3 X B O X C O M ...
Страница 130: ...Note Z 3 X B O X C O M ...