SCHEMATIC DIAGRAMS (08/9)
SCH08_DIGITAL(3/4)
All Ref.No. has been described in the parts list are four digits.
But there are less than four digits of printed Ref.No. on the PCB, and they have become four digits after the header by adding "0" in the parts list.
GND LINE
POWER- LINE
POWER+ LINE
DSD SIGNAL STBY POWERRch SIGNAL Lch SIGNAL SPDIF PCM SIGNAL
NFM18PS105R0J3
L208
0.01Z
C228
D206
NFM18PS105R0J3
L209
0.01Z
C269
NFM18PS105R0J3
L207
NFM18PS105R0J3
L206
0.1Z
C260
1K
R274
0.01Z
C264
ALTERA_DCLK
H1
0.1Z
C261
DAC_RST_OUT
T3
0.1Z
C271
ASDO_DATA1
C1
1000P
C267
DAC_CK_OUT
R3
0.01Z
C239
CONT4.
L16
MSEL1
H12
0.1Z
C280
RB521S
D208
0.01Z
C273
0.1Z
C285
33_VCCIO
0.01Z
C279
0
R227
0.01Z
C287
0.1Z
C299
DFRST
A11
0.1Z
C291
D203
KDS160
N205
OPEN
1
2
3
4
5
6
7
8
9
10
0.1Z
C274
0.1Z
C307
0.1Z
C223
1000P
C317
0
R272
0.1Z
C296
0.1Z
C265
MDT
A12
0.01Z
C290
0.01Z
C245
0.1Z
C292
GND
0.01Z
C243
0.01Z
C237
0
R271
0.01Z
C242
10K
R259
25_VCC
CONF_DONE
H14
0.01Z
C251
R260
47K
C249
0.1Z
Rfs/FS_DSP
P1
10P
C308
0.01Z
C248
0.1Z
C268
0.1Z
C300
PD0/DFL_DSP
P2
0.01Z
C244
P3
R64fs/BCK_DSP
47P
C224
P16
USB_BCK_IN
0.01Z
C231
R16
USB_LRCK_IN
0.1Z
C283
C233
0.01Z
TCK
H3
0.1Z
C282
0.01Z
C281
0.1Z
C305
0.1Z
C225
nCONFIG
H5
OPENR257
0.1Z
C289
10P-FFC
N204
1
2
3
4
5
6
7
8
9
10
OPENR255
0
R235
4.7u
C254
10P
C310
OPENR256
1K
R275
0.1Z
C286
OPEN
R262
25_VCC
0.1Z
C303
4.7u
C255
10P
C311
DATA0
H2
0.1Z
C288
0.1Z
C297
0.01Z
C275
GND
2753MCK_O
R4
N16
USB_SPDIF_IN
TMS
J5
0.01Z
C295
PD0/DFL_O_DSP
R1
USB_DATA_IN
N15
0.1Z
C262
0.1Z
C259
USB_MCK.
T15
OPENR254
0.01Z
C278
0.1Z
C301
0
R253
U204
PQ012FZ01ZP
1
IN
2
BIAS
4
ON
5
G
3
OUT
10K
R268
0.01Z
C226
0.01Z
C238
25_VCC
ALTERA_nCEO
F16
10K
R206
C247
1000P
TDO
J4
33_VCCIO
0.01Z
C293
TEST1
A8
R261
OPEN
0.01Z
C284
10P
C309
D202
1SR154-400TE25
1000P
C266
0.01Z
C241
RSV_1.
T8
0.1Z
C294
0.1Z
C304
0.1Z
C298
/CS_A1
T11
12_VCC
10K
R273
SRCLK
T12
D204
KDS160
nSTATUS
F4
SRDATAO
R12
TDI
H4
GND
DFRST_IN
R11
4.7u
C221
C246
1000P
0.01Z
C235
4.7u
C253
0.1Z
C315
MODE2.
R10
0.1Z
C302
FLASH_nCE_Ncso
D2
GND
0.01Z
C240
0.01Z
C272
0.01Z
C232
GND
1000P
C227
WCKF15
0.01Z
C316
10K
R263
C250
0.1Z
MODE3.
T10
IN
OUT
U203
BA25BC0FP
25_VCC
nCE
J3
33_VCCIO
C234
0.01Z
0.01Z
C276
GND
4.7u
C222
D205
4.7u
C252
0.01Z
C236
0.01Z
C263
D207
1K
R269
33_VCCIO
0.1Z
C306
NFM18PS105R0J3
L211
0.1Z
C277
0.01Z
C270
NFM18PS105R0J3
L210
GND
33_VCCIO
C218
4.7u
33_VCC_DIR
33_VCC_USB-B
L203
FBMJ1608HS280NT
47P
C215
L202
FBMJ1608HS280NT
0.1Z
C214
4.7u
C212
4.7u
C213
OPENC210
GND
TDI
12_VCC
DFRST_IN
12_VCC
GND
MDT
TEST6
GND
33_VCCIO
AMUTE
1
A
2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
B
C
D
E
F
G
H
K
L
M
N
P
R
T
J
EP4CE15F17C8N
U202
A1
1
A2
2
A3
3
A4
4
A5
5
A6
6
A7
7
A8
8
A9
9
A10
10
A11
11
A12
12
A13
13
A14
14
A15
15
A16
16
B1
17
B2
18
B3
19
B4
20
B5
21
B6
22
B7
23
B8
24
B9
25
B10
26
B11
27
B12
28
B13
29
B14
30
B15
31
B16
32
C1
33
C2
34
C3
35
C4
36
C5
37
C6
38
C7
39
C8
40
C9
41
C10
42
C11
43
C12
44
C13
45
C14
46
C15
47
C16
48
D1
49
D2
50
D3
51
D4
52
D5
53
D6
54
D7
55
D8
56
D9
57
D10
58
D11
59
D12
60
D13
61
D14
62
D15
63
D16
64
E1
65
E2
66
E3
67
E4
68
E5
69
E6
70
E7
71
E8
72
E9
73
E10
74
E11
75
E12
76
E13
77
E14
78
E15
79
E16
80
F1
81
F2
82
F3
83
F4
84
F5
85
F6
86
F7
87
F8
88
F9
89
F10
90
F11
91
F12
92
F13
93
F14
94
F15
95
F16
96
G1
97
G2
98
G3
99
G4
100
G5
101
G6
102
G7
103
G8
104
G9
105
G10
106
G11
107
G12
108
G13
109
G14
110
G15
111
G16
112
H1
113
H2
114
H3
115
H4
116
H5
117
H6
118
H7
119
H8
120
H9
121
H10
122
H11
123
H12
124
H13
125
H14
126
H15
127
H16
128
J1
129
J2
130
J3
131
J4
132
J5
133
J6
134
J7
135
J8
136
J9
137
J10
138
J11
139
J12
140
J13
141
J14
142
J15
143
J16
144
K1
145
K2
146
K3
147
K4
148
K5
149
K6
150
K7
151
K8
152
K9
153
K10
154
K11
155
K12
156
K13
157
K14
158
K15
159
K16
160
L1
161
L2
162
L3
163
L4
164
L5
165
L6
166
L7
167
L8
168
L9
169
L10
170
L11
171
L12
172
L13
173
L14
174
L15
175
L16
176
M1
177
M2
178
M3
179
M4
180
M5
181
M6
182
M7
183
M8
184
M9
185
M10
186
M11
187
M12
188
M13
189
M14
190
M15
191
M16
192
N1
193
N2
194
N3
195
N4
196
N5
197
N6
198
N7
199
N8
200
N9
201
N10
202
N11
203
N12
204
N13
205
N14
206
N15
207
N16
208
P1
209
P2
210
P3
211
P4
212
P5
213
P6
214
P7
215
P8
216
P9
217
P10
218
P11
219
P12
220
P13
221
P14
222
P15
223
P16
224
R1
225
R2
226
R3
227
R4
228
R5
229
R6
230
R7
231
R8
232
R9
233
R10
234
R11
235
R12
236
R13
237
R14
238
R15
239
R16
240
T1
241
T2
242
T3
243
T4
244
T5
245
T6
246
T7
247
T8
248
T9
249
T10
250
T11
251
T12
252
T13
253
T14
254
T15
255
T16
256
FPGA_RES3
GND
DATA_DISC_MODE_
CONF_DONE
USBB_MCK_OUT.
GND
33_VCCIO
33_VCCIO
ASDO_DATA1
FPGA_BCK_OUT
GND
12_VCC
12_VCC
MCK2_OUT_DAC
DSD/PCM
12_VCC
FPGA_RES1
ERROR
25_VCC
I2S_MCK
DSDR
12_VCC
SRCLK
SPDIF_MODE_
FPGA_MCK_OUT
PCM_BCK
GND
GND
12_VCC
FS1.
USBB_DSD_L
33_VCCIO
USB-A_Mode
GND
PBCK/DBCK
25_VCC
22.5792Mhz_IN
RES_MCK
GND
WCK_OUT/DSD_R
TEST1
RSV_1.
GND
GND
ALTERA_nCEO
MTK_MODE_
USB_SPDIF_IN
33_VCCIO
GND
GND
2753MCK_O
33_VCCIO
USBB_DBCK
33_VCCIO
GND
USB_LRCK_IN
GND
/INT_EXT
33_VCCIO
GND
PCM_DSD_MODE_
GND
GND
25_VCC
TEST2
SRDATAO
33_VCCIO
GND
12_VCC
33_VCCIO
GND
DATA0
USBB_DSD_PCM.
FS0.
FS384_CONT_
GND
12_VCC
PD0/DFL_DSP
GND
CONT4.
GND
25_VCC
12_VCC
GND
FLASH_nCE_Ncso
DAC_DATA_OUT
USB_DATA_IN
PD0/DFL_O_DSP
GND
MSEL1
MODE2.
GND
GND
33_VCCIO
MCK_FS_CONT_
GND
33_VCCIO
PLRCK
USBB_44.1/48
GND
GND
GND
GND
GND
GND
DAC_CK_OUT
GND
DBCK.
USB-B_MODE.
ALTERA_DCLK
nCE
12_VCC
MODE3.
GND
GND
DSD_BCK
DSD_DATA_L
33_VCCIO
S_TEST_4
33_VCCIO
PDATA/DSDL
12_VCC
12_VCC
PCM_DATA_L
Rfs/FS_DSP
33_VCCIO
24.576MHz_IN
PLL_INPUT_CLK
FPGA_LRCK_OUT
DAC_FS_CONT
TDO
USBB_DSD_R
S_TEST_3
/CS_A1
GND
12_VCC
MCK_CONT_O
GND
R64fs/BCK_DSP
DIR_DATA_IN
33_VCCIO
FPGA_DATA_OUT
GND
DIR_BCK_IN
TCK
33_VCCIO
12_VCC
33_VCCIO
WCK
33_VCCIO
TMS
USB_MCK.
GND
GND
FPGA_VER_CONT.
12_VCC
GND
nSTATUS
GND
FPGA_RES2
PLL_OUT_CLK
nCONFIG
DIR_MCK_IN
DIR_LRCK_IN
S_TEST_5
TEST7
USB_BCK_IN
DFRST
GND
EMPHASIS
33_VCCIO
FPGA_RES4
PCM_DATA_R
DMIX_L
DAC_RST_OUT
DIR1_DATA
BIDIRECT
DIR1_LRCK
BIDIRECT
DIR1_BCK
BIDIRECT
DIR1_MCK
BIDIRECT
0
R208
DIR_DATA_IN
K1
0
R211
DIR_MCK_IN
B9
DIR_BCK_IN
L1
0
R209
DIR_LRCK_IN
K2
0
R210
ERROR
J2
DIR1_ERROR
BIDIRECT
0
R207
0
R212
FS0.
B1
0
R213
FS1.
E1
FS0
BIDIRECT
FS1
BIDIRECT
AL32_TEST3
BIDIRECT
AL32_TEST4
BIDIRECT
AL32_TEST5
BIDIRECT
AL32_SIG_SEL
BIDIRECT
S_TEST_5
B3
0
R215
0
R214
0
R216
S_TEST_3
C3
S_TEST_4
A3
0
R217
/INT_EXT
A4
FPGA_VER_CONT.
A13
EMPHASIS
A2
0
R218
0
R219
AL32_EMPHA
BIDIRECT
FPGA_VER_CONT
BIDIRECT
10K
R205
33_VCCIO
FPGA_RES1
J1
FPGA_RES2
A5
FPGA_RES3
A6
FPGA_RES4
A7
AD32_RESET
BIDIRECT
FPGA_RESERVE2
BIDIRECT
FPGA_RESERVE3
BIDIRECT
FPGA_RESERVE4
BIDIRECT
SPDIF_MODE_
J14
USB-B_MODE.
K15
0
R225
0
R224
USBB_MODE
BIDIRECT
SPDIF_MODE
BIDIRECT
0
R226
PCM_DSD_MODE_
L13
PCMorDSD
BIDIRECT
TEST2
B8
PLL_INPUT_CLK
T9
R249
33
TEST6
A10
DBCK.
M1
TEST7
B10
220
R248
PLL_OUT_CLK
R14
33
R247
33
R230
USBB_MCK_OUT.
L2
33
R231
USBB_DSD_R
C2
33
R228
33
R232
33
R229
USBB_DSD_L
J16
USBB_DBCK
G15
DMIX_L
K16
USBB_MCLK
INPUT
USBB_PBCK
BIDIRECT
USBB_PLRCK/DBCK
BIDIRECT
PDATA/DSD_DATA_L
BIDIRECT
USBB_DSD_DATA_R
BIDIRECT
USBB_44.1/48
D1
USBB_DSD_PCM.
N1
0
R234
0
R233
USBB_MCLK_FSEL
BIDIRECT
DSD_MODE_DSD/PCM
BIDIRECT
2.2
C202
SI-8008TM
U201
VIN
1
SS
5
GND
3
ADJ
4
SWOUT
2
0.1
C203
SJPB-L4
D201
47uH
L201
1
2
8.2K
R276
3.6K
R278
1.6K
R277
1.6K
R279
1000P
C204
0.01
C205
0.01
C209
1000P
C208
GND
0
R220
0
R221
0
R222
0
R223
C220
100/6.3
C229
100/6.3
C258
100/6.3
C257
100/6.3
100/6.3
C211
C216
100/6.3
C230
100/6.3
C219
4.7u
C217
100/6.3
L205
FBMJ1608HS280NT
L204
FBMJ1608HS280NT
C256
100/6.3
+5VD
RL_GND
ANA_MODE
BIDIRECT
T125FS019T200BR
N202
1
GND_D
2
A_MUTE
3
GND_D
4
+3.3VD
5
GND_D
6
MCLK_24.576MHz
7
GND_D
8
MCLK_22.5792MHz
9
GND_D
10
PCM_DATA_L
11
GND_D
12
PCM_DATA_R
13
GND_D
14
WCK/DSD_R
15
GND_D
16
DSD_DATA_L
17
GND_D
18
PBCK
19
GND_D
C328
0.1Z
R290
33
GND
R289
33
C330
0.1Z
R291
33
A_GND2
R295
33
C332
0.1Z
R293
33
33_VCCIO
C327
0.1Z
R241
33
C326
0.1Z
R292
33
+3.3VD
BLM21PG221
L212
C324
0.1Z
C329
0.1Z
C325
0.1Z
R294
33
BLM21PG221
L213
ADuM1285CRZ
U211
1
VDD1
2
VIA
3
VIB
4
GND1
5
GND2
6
VOB
7
VOA
8
VDD2
C331
0.1Z
ADuM1285CRZ
U210
1
VDD1
2
VIA
3
VIB
4
GND1
5
GND2
6
VOB
7
VOA
8
VDD2
C323
0.1Z
ADuM1285CRZ
U209
1
VDD1
2
VIA
3
VIB
4
GND1
5
GND2
6
VOB
7
VOA
8
VDD2
ADuM1285CRZ
U212
1
VDD1
2
VIA
3
VIB
4
GND1
5
GND2
6
VOB
7
VOA
8
VDD2
+12VA
-12VA
A_GND
A_GND2
T125FS019T200BR
N203
1
DAC_MS
2
DAC_MCODI
3
DAC_MC
4
DAC_RST
5
MODE
6
DAC_MCK_FS_CONT
7
GND_D
8
MCLK2
9
GND_D
10
INT/EXT
11
GND_D
12
DBCK
13
GND_D
14
+12VA
15
+12VA
16
A_GND
17
A_GND
18
-12VA
19
-12VA
A_GND2
R281
33
R285
33
R282
33
R283
33
R287
33
R240
33
R286
33
R284
33
+12VA
-12VA
A_GND
MCK2_OUT_DAC
P14
DSD_DATA_L
R7
WCK_OUT/DSD_R
T6
+3.3VD
R288
33
R280
33
0
R246
MCK_CONT_O
R13
MODE_PCM/DSD
BIDIRECT
A_MUTE
BIDIRECT
DAC_RST
BIDIRECT
DAC_MOSI
BIDIRECT
GND
33_VCCIO
4.7u
C314
33
R252
C313
0.1
47
R250
C312
0.01
1M
R251
TC7WHU04FU
U205
1A
1
2Y
2
3A
3
GND
4
3Y
5
2A
6
1Y
7
VCC
8
22.5792Mhz_IN
A9
0
R245
C320
0.01
OPEN
R266
TC7WHU04FU
U207
1A
1
2Y
2
3A
3
GND
4
3Y
5
2A
6
1Y
7
VCC
8
DIR_SCK_24.576MHz
OUTPUT
C321
0.01
0
R244
C318
0.01
47
R258
24.576MHz_IN
A15
C319
0.1
47
R270
4.7uC322
33_VCCIO
OPENR267
33
R265
GND
1M
R264
100/6.3
C207
C334
0.1Z
C333
0.01
1000P
C335
100/6.3
C336
C338
0.1Z
C337
0.01
1000P
C339
7P-PH(SMD)
N201
1
AC2_RELAY
2
+5VD
3
-12VA
4
A_GND
5
+12VA
6
+6VD
7
D_GND
GND-TERM(SD01388-28)
B201
GND-TERM(SD01388-28)
B202
DAC_DATA_OUT
T2
EPCQ16SI8N
U206
1
nCS
2
DATA1
3
VCC
4
GND
5
DATA0
6
DCLK
7
VCC
8
VCC
KTC3875S
Q202
4.7K
R236
4.7K
R237
KTC3875S
Q203
KTC3875S
Q204
GND
DIG_PROT
INPUT
2.2
C340
33K
R296
33K
R297
10K
R298
10K
R242
ADuM1285CRZ
U208
1
VDD1
2
VIA
3
VIB
4
GND1
5
GND2
6
VOB
7
VOA
8
VDD2
PCM_BCK
T7
DSD_BCK
T5
PCM_DATA_L
R6
PCM_DATA_R
R5
DAC_CS
BIDIRECT
DAC_CLK
BIDIRECT
0
R243
DAC_FS_CONT
F14
L214
FBMJ1608HS280NT
L215
L216
L217
L218
L219
L220
560/35
C201
1000/10
C206
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND GND
GND
GND
GNDGND
GND
GND
GND
GND
GND
GND
GND
GND
PBCK
DBCK
(OPEN)
x4
FPGA input
AD32 input CHK
AD32 BCK
AD32 DATA
AD32 LRCK
NC
NC
NC
NC
NC
NC
NC
SEL2
NC
NC
NC
NC
NC
NC
NC
NC
MSEL1
NC
NC
NC NCNC
NC
NC
NCNC
NC
NC
NC
NCNC
NC
NC
MSEL0
NC
NC
NC
(24.576/22.5792MHz)
Ref 201-
From Sht.004
(USB-B)
From Sht.002
(DIR)
From Sht.001
(MCU)
8U-310206
DIGITAL UNIT(3/4)
(AL32plus FPGA)
(Ref R205-)
from AC2 UNIT
8U-110205-6
N8602
W0014
From Sht.001
(MCU)
To Sht.002
(DIR)
from DAC UNIT
8U-210215
N401
from DAC UNIT
8U-210215
N402
ANA_MODE
H:Analog Mode Off (Digital On)
L:Analog Mode On (Digital Off)
FPGA_VER_CONT
H: Normal
L: Version Checl Mode
USBB_MODE
H: USB-B
L: SPDIF
SPDIF_MODE
H: SPDIF
L: USB-B
PCMorDSD
H: DSD
L: PCM
F0 F1 TEST3 TEST4 TEST5
UNLOCK 0 0
32 1 0 0 1 0
44.1 0 1 0 1 0
48 1 1 0 1 0
64 1 0 0 0 0
88.2 0 1 0 0 0
96 1 1 0 0 0
128 1 0 1 1 1
176.4 0 1 1 1 1
192 1 1 1 1 1
376.4 0 1 1 0 1
384 1 1 1 0 1
DIR1_MCK
32k/64k/128kHz :16.384MHz
44.1k/88.2k/176.4kHz:22.5792kHz
48k/96k/192kHz :24.576MHz
WCK_OUT
32k/64k/128kHz :512kHz
44.1k/88.2k/176.4/352.8kHz:705.6kHz
48k/96k/192k/384kHz :768kHz
USBB_MCK
44.1k/88.2k/176.4kHz:22.5792kHz
48k/96k/192kHz :24.576MHz
1A
TO A1
2A
TO A2
5A
TO A5
6A
TO A6
7A
TO A7
8A
TO A8
9A
TO A9
B0
TO 0B
B1
TO 1B
B2
TO 2B
N201
TO N8602
N202
TO N401
N203
TO N402
58
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
A
B
C
D
E
F
G
H
J
K
L
M
A
B
C
D
E
F
G
H
J
K
L
M
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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