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• IC Block Diagram
– MAIN Board –
IC101 TB2132FNG
30
29
28
27
26
25
OSC
AM
AM
MIX
OSC
1/2
AM
TV 1/8
1/4
BUFFER
1/16
FM 1/32
TV
FM/TV 1/2
RF
FM/TV
MIX
FM
RF
AGC
1
2
3
4
IC201 TB2173FTG
44
43
PORT
BEEP OUTA 1
+
OUTA
2
–
OUTC 3
PW GND 4
+
OUTB 5
–
BEEP OUTB 6
VCC2 7
BST TC 8
AGC DET 9
AGC IN 10
BST OUT 11
12
13
14
D-NF430/NF431
24
23
22
21
20
19
18
17
16
AM OSCIN
PROGRAM
PHASE
COUNTER
COMPARATOR
FM OSCIN
REFERENCE
DIVIDER
IFIN
PLL
1/8
FM/AM/TV
SWITCH
AM
FM
IF
FM
BUFFER
DET
AM
FM MPX
DET
FM
AM
AF
IF
IF
MUTE
5
6
7
8
9
10
11
12
13 14
15
42
41
40
39
38
37
36
35
34
VOLUME/SWITCH
MODE
33
C-SW
/PORT CONTORL
SWITCH
32
GND
VOLUME
31
IN2A
30
VOL OUTA
–
+
29
PRE INA
+
28
PRE INB
–
27
VOL OUTB
VOLUME
26
IN2B
ATTENUATOR
25
IN1A
ATTENUATOR
24
IN1B
23
PRE GND
BIAS
BEEP
15
16
17
18
19
20
21
22
IC250 XC6367A303MRN
PHASE
VOUT
1
COMPENSATION
PWM
ERROR AMP
COMPARATOR
VDD
2
+
+
–
–
PWM/PFM
CONTROLER
REFERENCE
VOLTAGE WITH
RAMP WAVE
CE
3
SOFT START/
GENERATOR/
CHIP ENABLE
OSC
IC603 XC6213B212NR
ON/OFF
CE 1
CONTROL
+
CURRENT
LIMIT
–
VOLTAGE
REFERENCE
VSS 2
IC803, 841 XC6219B272MR
VCC
VIN 1
+
–
VOLTAGE
VSS 2
REFERENCE
VCC
ON/OFF
CE 3
CONTROL
11
11
BUFFER/
5
EXT
DRIVER
4
GND
4
VIN
3
VOUT
5
VOUT
CURRENT
LIMIT
4
NC
D-NF430/NF431
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