14
14
D-NS707F
BLOCK DIAGRAM – TUNER SECTION –
• SIGNAL PATH
: FM
TU R
TU L
FM/TV MIX
FM RF IN
OSC OUT
DET OUT
FM MIX
AM MIX
AM OSC
TV FM OSC
2
FMANT
H
24
TV RF IN
1
K
L
AM RF IN
27
AM BYPASS
28
4
8
IFIN_I
IFREQ_O
IC61
TUNER CONTROLLER
IC1
RF/IF AMP, FM/AM DET, FM MPX
BPF
REF
REF
VT
FL1/FL2
EQ(DO1)_O
65
NC
40
VT
Q84,85
OSC
Q86
3.2V
T81
DDCON
Q152
AM MIX
FM/AM/TV
PW SW
5
23
TV
OSC
FM
OSC
AM
OSC
1/8
1/16
FM IF IN
AM IF IN
1/2
CF2
CF1
25
TV-L ON_O
41
TV RF OUT
30
FM RF OUT
29
REF
10
FM
DET
FM
MPX
AGC
LEVEL
DET
AM
DET
SW
AF
12
MPX IN
13
R OUT
15
LPF1
14
L OUT
16
VOL CTRL
TUBEEP
PWM OUT_O 50
BST SW
BST SW_O 58
TUMUTE
TUMUTE_O
IC62
EEPROM
62
TUBEEP_O 49
MONO_O 55
IF COUNT
19
IF REQ
20
64
61
+B ON/OFF_O
60
CS
32
1
SK
48
2
DI
47
3
DO
EEP CS_O
75
XIN
74
X61
75kHz
XOUT
73
RESET_I
DST RST
VCPU
ACKCD
HOLD
1.4VREF
AD I HIDC
AD I BATT
ADKEY1
CD ON
TU ON
ADKEY2
57
XTU TEST_I
54
ACK CD-O
51
TU HOLD_I
45
AD DC REF
44
HIDC_I
43
BATT_I
42
KEY_I
39
CD ON_I
38
TU ON_O
37
SUBEY1_2
SCK-I-CDU
SDO-O-CDU
SDI-I-CDU
46
4
27
CS_O
A0_O
26
AM IN
71
BAND CTRL 1_O
MODE1
21
53
BAND CTRL 2_O
MODE2
22
52
IF
Q1
Q89
VCPU
A0
XCS
DTS SDTO
DTS SDTI
DTS SCK
I
J
BUFF
Q71
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