4-11. Ic Pin Function Description - Sony SRF-HM01V Service Manual

SRF-HM01V

4-11. IC PIN FUNCTION DESCRIPTION

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