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HCD-BX3R/BX4R
18
18
HCD-BX3R/BX4R
6-2. BLOCK DIAGRAM – TUNER, USB Section –
BUS1
BUS0
BUS2
BUS3
BUCK
CCE
REQ
LB
I/O0 – I/O15
D0 – D15
S-RAM
IC921
39
UB 40
OE 41
WE 17
CE 6
79 D+
80 D–
77 USBOC
USB CONTROLLER
IC901
35 USB TXD
SYSTEM CONTROLLER
IC301 (2/4)
CN902
(USB)
(USB)
3
2
1
D+
D–
78 USBPON
70 CS2
64 RD
65 WR
64 RD
65 WR
66 SRLLB
67 SRLUB
VBUS
B
DATA, CLK,
A-IN, BCK, LRCK,
GATE, ST-REQ
C
BUS0 – BUS3,
BUCK, CCE, REQ
VBUS POWER
ON/OFF SWITCH
IC915
5
1
4
OUT
EN
3
FLG
IN
VBUS
+5V
93
DATA
92
BCK
BCK
A-IN
LRCK
GATE
ST-REQ
71
LRCK
94
GATE
97
ST-REQ
E
TUNER-L
55
BUS0
56
BUS1
88
RXD1
36 USB RXD
87
TXD1
38 USB RTS
2
DI
37 USB CTS
84
DO
40 USB RESET
1
/RESET
57
BUS2
58
BUS3
59
/BUCK
60
/CCE
96
REQ
7 – 10, 13 – 16,
29 – 32, 35 – 38
18 – 25, 28 – 35
A0 – A15
A1 – A16
44 – 42, 27 – 24,
21 – 18, 5 – 1
37 – 43, 46 – 54
73
X2
75
X1
X901
9MHz
TUNER (FM/AM)
AM
FM ANT
AM ANT
L OUT
R OUT
DO/STEREO
R-CH
ST DIN
ST CLK
ST CE
FM 75
Ω
COAXIAL
ANTENNA
1 ST DATA IN/STEREO
3 ST DATA OUT
2 ST CLK
100 ST CE
SIGNAL PATH
R-ch is omitted due to same as L-ch.
: USB
: TUNER (FM/AM)
CLK
DATA
85
DATA
86
CLOCK
: CD PLAY
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