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6-2. Block Diagram – TUNER/USB/BLUETOOTH Section –
CN902
USB CONTROLLER
(USB)
3
D+
79 D+
2
D–
80 D–
VBUS POWER
ON/OFF SWITCH
IC915
1
VBUS
VBUS
5
OUT
IN
4
+5V
EN
FLG
1
3
77 USBOC
78 USBPON
S-RAM
IC921
CE 6
70 CS2
OE 41
64 RD
WE 17
65 WR
LB
39
66 SRLLB
UB 40
67 SRLUB
75
ANT901
PATTERN
ANTENNA
(FOR BLUETOOTH)
BLUETOOTH MODULE
HCD-HX3/HX5/HX7
IC901
A-IN
DATA
93
BCK
BCK
92
LRCK
LRCK
71
GATE
GATE
94
ST-REQ
ST-REQ
97
BUS0
BUS0
55
BUS1
BUS1
56
BUS2
BUS2
57
BUS3
BUS3
58
BUCK
/BUCK
59
CCE
/CCE
60
REQ
REQ
96
RXD1
88
TXD1
87
DI
2
DO
84
/RESET
1
ANTENNA
TUNER (FM/AM)
FM75Ω
FM ANT
COAXIAL
AM
AM ANT
DO/STEREO
X1
X2
73
RDS DATA
RDS CLK
X901
9MHz
(HX3: AEP/HX5: AEP,UK)
IC904
A_OUT_P_L
10
MIX AMP
IC902
A_OUT_N_L
9
A_OUT_P_R
8
R-CH
A_OUT_N_R
7
A_IN_P_L
5
LINE AMP
IC901
A_IN_N_L
4
A_IN_P_R
3
R-CH
A_IN_N_R
2
UART_RXD
40
UART_TXD
41
UART_CTS
38
UART_RTS
39
PIO_00
12
RESET
46
(HX3/HX5)
A-IN, BCK, LRCK,
GATE, ST-REQ
B
(Page 18)
BUS0 – BUS3,
BUCK, CCE, REQ
C
(Page 18)
SC_D_IN,
SC_D_OUT
D
(Page 20)
SYSTEM CONTROLLER
IC301 (2/5)
(HX7)
35 USB TXD/SAT TXD
36 USB RXD/SAT RXD
38 USB_RTS
37 USB_CTS
27 USB RESET
TUNER-L
E
L OUT
R OUT
R-CH
(Page 20)
88 ST DATA IN/STEREO
ST DIN
90 ST DATA OUT
ST CLK
89 ST CLK
ST CE
87 ST CE
86 RDS DATA
18 RDS INT
BT-L
F
(Page 20)
BT OUT-L
G
(Page 20)
31 BT_DOUT/DAB TXD
32 BT_DIN/DAB RXD
34 BT_RTS
61 BT_CTS
60 BT_AV_ROLE
63 BT RESET
(HX5/HX7)
19
19
R-ch is omitted due to same as L-ch.
SIGNAL PATH
: AUDIO
: TUNER (FM/AM)
: USB
: BLUETOOTH IN
: BLUETOOTH OUT
HCD-HX3/HX5/HX7
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