20
SRF-HM01V
4-11.
IC PIN FUNCTION DESCRIPTION
•
MICROCOMPUTER BOARD IC301 TC9329FA-112 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1 to 4
COM1 to COM4
O
Common drive signal output to the liquid crystal display
5 to 15
S1 to S11
O
Segment drive signal output to the liquid crystal display
16
P8-1
I
Not used
17
TR TEST
I
Setting terminal for TR mode (fixed at “L” in this set)
18
P8-3
I
Not used
19, 20
P9-0, P9-1
I
Not used
21, 22
KS1, KS2
O
Key scan signal output to the key matrix
23 to 25
KR1 to KR3
I
Key return signal input from the key matrix
26
P1-3
I
Not used
27
VDD
—
Power supply terminal (+1.5V)
28
BEEP
O
Beep sound signal output “H”: beep sound on
29
MEGA BASS
O
Mega bass control signal output “H”: mega bass on
30
AM BAND
O
AM band selection signal output “H”: AM
31
MUTE
O
Muting control signal output “L”: muting on
32
MUTE
O
Muting control signal output Not used
33
TEST
I
Setting terminal for test mode Not used
34
POWER SW
I
POWER switch input “H”: power on
35
INT1
I
Battery voltage (1.0V) detection signal input “L”: low battery
36
IF IN2
I
Not used
37
GND
—
Ground terminal
38
OSC IN
I
FM/AM/TV/WEATHER OSC signal input from the tuner circuit
39
VDD
—
Power supply terminal (+1.5V)
40
D0
O
PLL phase comparator output
41
V REG
—
Power supply terminal (connected to the coupling capacitor)
42
POWER ON2
O
Power on/off signal output “L”: power on
43
FM BAND
O
FM band selection signal output “L”: FM/TV (2ch to 6ch) (fixed at “L” in this set)
44, 45
P3-2, P3-3
I
Not used
46
REF SW
I
TV reference frequency selection signal output “L”: 3.125kHz, “H”: 6.25kHz
(fixed at “L” in this set)
47 to 49
P5-1 to P5-3
I
Not used
50
MONO/ST
O
Mono/stereo selection signal output “L”: mono
51
POWER ON1
O
Power on/off control signal output to the audio master amp “H”: power on
52
BAND1
O
Band 1 selection signal output “L”: AM, “H”: FM/TV/WEATHER
53
BAND2
O
Band 2 selection signal output
“L”: FM/TV (2ch to 6ch), “H”: AM/TV (7ch to 13ch)/WEATHER
54
RESET
I
System reset signal input “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
55
XOUT
O
Main system clock output terminal (75 kHz)
56
XIN
I
Main system clock input terminal (75 kHz)
57
GND
—
Ground terminal
58
VDB
—
Connection terminal of doubler circuit capacitor for liquid crystal display drive power supply
59, 60
C1, C2
—
Connection terminal of doubler circuit capacitor for liquid crystal display drive power supply
61
VEE
—
Connection terminal of doubler circuit capacitor for liquid crystal display drive power supply
62, 63
C3, C4
—
Connection terminal of doubler circuit capacitor for liquid crystal display drive power supply
64
VCLD
—
Connection terminal of doubler circuit capacitor for liquid crystal display drive power supply
Summary of Contents for S2 Sports Walkman SRF-HM01V
Page 8: ...8 SRF HM01V MEMO ...
