HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
51
51
6-25. SCHEMATIC DIAGRAM - S-AIR INC Board (HDX277WC/HDX279W/HDX576WF) -
• See page 64 for Waveforms. • See page 65 for IC Block Diagrams.
3.3
1.5
1.2
1.7
1.7
1.6
1.6
1.7
1.6
(1.6)
(0)
1.2
3.3
0.1
3.3
1.6
0 (1.4)
1.7
1.7
3.3
0
0
0
0
0
0.1
0
3.3
3.3
3.3
3.3
3.3
3.3
1.6
3.3
0
0.1
(1.6)
0.1
1.6
0
1.6
3.3
3.3
3.3
0
0
3.3
0
3.3
0
1.6
1.6
1.2
3.3
3.3
3.3
3.3
2.5
2.5
2.5
4.9
1.7
1.2
3.7
4.9
4.1
3.3
1
4.1
3.3
1.7
1.7
1.6
1.6
3.3
14
13
12
11
10
98
7
6
5
4
3
2
1
PCM1808PWR
IC805
R842 100
100
R847
100
R859
100
R829
0.1
C818
220
R860
100
R830
0
R845
100
R839
28
27
26
25
24
23
22
7
6
5
4
3
2
1
21
20
16
17
18
19
13
12
11
10
8
9
15
14
SRC4182
IC803
100
R848
100
R840
100
R846
100
R841
100
R858
100
R836
220
R864
100
R835
0
R849
100
R843
0.1
C819
28
27
26
25
24
23
22
7
6
5
4
3
2
1
21
20
16
17
18
19
13
12
11
10
8
9
15
14
SRC4182
IC804
100
R834
220
R863
220
R865
0
R850
100
R844
220
R837
100
R838
100
R855
CL835
CL836
CL837
CL831
CL832
CL833
C817
100p
C814
100p
100
R831
CL834
CL830
0.1
C801
100
R809
100
R81
1
100
R808
100
R874
R878
10k
R873
10k
R872
10k
100
R876
R879 10k
R877 10k
CL850
CL852
CL853
CL854
CL855
CL856
CL857
CL858
CL859
CL860
CL861
CL862
CL863
CL864
CL865
CL867
CL868
CL869
CL847
CL848
CL849
CL828
CL829
CL838
CL839
CL800
CL801
CL802
CL803
CL804
CL805
CL808
CL811
CL812
CL813
CL814
CL815
CL816
CL820
CL821
CL822
10
R800
10
R801
100
R821
0
R856
100
R832
47
R828
47
R826
47
R827
8765
4
3
2
1
TC7WHU04FK(T5RSOYF
IC802
15p
C802
100k
R815
18p
C807
3.3k
R813
12.288 MHz
X800
1k
R806
100k
R814
0.01
C800
100
R810
220
R812
100
R822
0
R851
0
R852
0
R805
50V
10
C805
0.1
C804
10uH
L800
0.1
C823
0.1
C824
10uH
L801
0.1
C822
CL845
CL842
50V
10
C826
0.1
C821
0.1
C820
50V
10
C825
100
R824
100
R861
100
R862
CL840
CL841
MC2837
D800
E
ET802
CL866
CL851
C833
47p
C836
47p
C834
47p
C835
47p
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
20P
CN803
GND
VCC_3.3V
GND(for DET)
MCLK
A0
A1
INT
Debug_TXD
CONNECT
Link_IND
I2C_SCL
RESET
SDIN_B(Surr)
I2C_SDA
LRCK
SDIN_D
BCK
GND
SDIN_C
SDIN_A(2nd)
10uH
L802
10uH
L803
10V
220
C839
0
R880
0
R881
C840
1
C841
1
CL870
R889
0
1
C845
3.3k
R895
1
C844
5
4
3
2
1
S-T1
11B33MC-OGSTFG
IC806
10V
1000
C803
0.01
C808
22k
R818
1.5k
R817
CL826
1
2
3
4
5
R807
1k
0.01
C806
CL827
10k
R819
C843
470p
0.1
C830
CL871
CL872
C882
100p
100p
C886
100p
C885
FB801
10
C827
10
C829
10
C846
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17P
CN800
I2C_SCL
ADC_SEL
SRC_MUTE
SD1(DMIX/XM)
BCK2
LRCK1
SD2(SL/SR)
GND
S-AIR_DET
GPIO2
LRCK2
BCK1
IFMT0(DMIX/XM)
RESET
I2C_SDA
GND
A5V_SW
1
2
3
4
4P
CN804
LCH
AGND
RCH
A+5V
10
C828
1
2
2P
CN805
S-AIR-GND
E4V
10V
1000
C888
0
R904
L805
10uH
10V
470
C809
0
R896
0
R898
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
IC801
TC74VHC157FK(EL,K)
A/D CONVERTER
IC805
+3.3V REGULATOR
IC800
+3.3V REGULATOR
IC806
OSC BUFFER
IC802
DATA SELECTOR
IC801
S-AIR INC BOARD
(CHASSIS)
EZW-RT10
TRANSCEIVER
EZW-RT10
WIRELESS
IC804
ASYNC SAMPLE RATE
CONVERTER
ASYNC SAMPLE RATE
CONVERTER
IC803
D
3
A
14
11
13
8
5
B
12
7
4
J
F
K
9
I
10
2
E
C
H
6
G
1
15