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4. TROUBLE SHOOTING
13MHZ
MIDI_RST
2V8_VMEM
ADD0
RD
MIDI_CS
MIDI_INT
DATA8
DATA9
DATA10
DATA11
DATA12
DATA13
DATA14
DATA15
0.1u
C234
R238
10K
C238
0.1u
U202
R236
U201
R209
U200
YMU759B
R230
1
11
HPOUT_R
CLK1
4
10
0
_RST
HPOUT_L
30
A0
R231
31
EQ1
12
_RD
29
_CS
R232
5
33K
EQ2
13
IFSEL
10K
28
C232
WR
_WR
3
390p
_IRQ
27
EQ3
14
D0
26
EXT1
2
D1
25
19
EXT2
D2
24
D3
23
D4
22
17
D5
SPOUT1
21
D6
20
D7
R235
SPOUT2
PLLC
6
18
3.3K
VREF
9
SPVDD
15
SDOUT
32
C236
C237
C235
R239
47p
0.1u
47p
VDD
7
0
16
SPVSS
VSS
8
Figure 4-21.
C200
39p
R234
0
U201
NLAS4684MR2
1
10
V+
NO2
R236
2
9
NO1
COM2
0
3
8
COM1
IN2
4
7
IN1
NC2
R206
5
6
RCVP
NC1
GND
4.7
C207
39p
R207
RCVN
4.7
C210
39p
SPK_RCV_EN
- 58 -
C238
U200
C235
R234
CN200
C208
1
47p
2
C211
C212
39p
39p
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