Sony NW-A605 Service Manual page 23

• IC Block Diagrams
– MAIN Board –
IC301 TB2173FTG
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
IC401 RV5C348A-E2
32K 1
32kHz
OUT
OUTPUT
CONTROL
SCLK
2
SO
3
SI
4
VSS
5
OSC
OSC
DETECT
44 43 42 41
PORT
+
–
+
–
13 14
COMPARATOR_W
COMPARATOR_D
DIVIDER
DIV
CORRECTION (SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
ADDRESS
DECODER
INTERRUPT
CONTROL
40 39 38 37 36 35 34
VOLUME/SWITCH MODE
33
/PORT CONTORL SWITCH
32
VOLUME 31
30
–
+
29
+ 28
–
27
VOLUME 26
ATTENUATOR 25
ATTENUATOR 24
23
BIAS BEEP
15 16 17 18 19 20 21 22
ALARM_W REGISTER
(WEEK, MIN, HOUD)
ALARM_D REGISTER
(MIN, HOUR)
TIME COUNTER
ADDRESS
DECODER
I/O
CONTROL
SHIFT
REGISTER
NW-A605/A607/A608
C-SW
GND
IN2A
VOL OUTA
PRE INA
PRE INB
VOL OUTB
IN2B
IN1A
IN1B
PRE GND
VOLTAGE
DETECT
10 VDD
9 OSCIN
8 OSCOUT
7 CE
6 /NTR
23