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3 7 63 1515 0
5-1. IC PIN DESCRIPTIONS
• IC61 TC9327AF-631 (TUNER PLL, LCD DRIVER)
Pin No.
1 – 4
5 – 20
21
22
23
24
25
XLOCAL/XMONO-DET-I
26, 27
28
29
30
EEP D0/D1-IO
31
32
33
34, 35
36
MEM-KEY (3-BIT)
37
PRESET KEY
38
39
CDON-IWP-CDU
40
I/O (RESERVED)
41
42
TE
L 13942296513
43
AD2 RMKEY
44
AD3 BATT HIDC
45
46
47
SDO-O-CDU (RESERVED)
48
49
50
51
XHOLD-I-SW
52
XAVLS-I-SW
53
XDC IN DET-I
54
55
ST OR DX-O-CTR
56
57
TU TEST MODE
58
59
60
61
62
63
64
65
www
66
67
68
.
69
70
http://www.xiaoyu163.com
Pin Name
I/O
COM1 – 4
O
LCD driver signal output
S1 – 16
O
LCD driver signal output
AM STEP-I
I
AM 9K/10K tuning step select signal input (initialization)
DEST2-I
I
Bit2 tuner destination setting signal input (Fixed at "L" in this set)
DEST1-I
I
Bit1 tuner destination setting signal input (Fixed at "L" in this set)
DEST0-I
I
Bit0 tuner destination setting signal input (Fixed at "L" in this set)
I
LOCAL/DX or MONO/STEREO ON-OFF switch detect signal input
NC
—
Not used. (Open)
LCDREQ-I
I
LCD display request signal input
LID OPEN
I
CD door open detect signal input
I/O
Data signal input/output for EEPROM IC.
EEP SK-O
O
Clock signal output for EEPROM IC.
EEP CS-O
O
Chip select signal output for EEPROM IC.
XL/O-I
I
Line out signal input
NC
—
Not used. (Open)
I
Memory key signal input (Fixed at "H" in this set)
I
Not used in this set. (Open)
CD ACK-I
O
CD acknowledge signal output
I
CD ON request signal input (Wake-up tuner in sleep mode)
—
Not used. (Open)
NC
—
Not used. (Open)
AD1 KEY
I
Set keys signal input
I
Remote key signal input (Fixed at "L" in this set)
I
Battery/HiDC level detect signal input
AD DC REF
I
Reference DC signal input of A/D.
SDI-I-CDU
I
Serial data signal input from system control IC.
O
Serial data signal output to system control IC.
SCK-I-CDU
I
Serial clock signal input from system control IC.
TUBEEP-O
O
Beep sound control signal output
NC (I/O)
—
Not used. (Open)
I
HOLD detect signal input
I
AVLS detect signal input
I
DC-in detect signal input
TU ON-O
O
Tuner ON request signal output
O
LOCAL/DX or MONO/STEREO ON-OFF control signal output
TUBASS2-O
O
MEGA BASS 2 sound mode signal output (Not used in this set)
I
Tuner test mode detect signal input
TUBASS1-O
O
MEGA BASS 1 sound mode signal output (Not used in this set)
AM/XFM-O
O
Band control FM/AM signal output to tuner IC.
+B ON/OFF
O
Radio power ON/OFF signal output
IFREQ-O
O
IF request signal output
TUMUTE-O
O
Mute HP control signal output
TEST
—
Not used. (Open)
IFIN
I
FM/AM IF signal input
EO (DO1)
O
PLL error signal output
NC (DO2)
—
Not used. (Open)
x
ao
HOLD
I
Not used. (Connect to ground in this set)
y
NC
—
Not used. (Open)
i
GND
—
Ground
FM IN
I
FM oscillation signal input
http://www.xiaoyu163.com
SECTION 5
DIAGRAMS
8
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
Pin Description
1 5
0 5
8
2 9
9 4
m
co
D-F20
9 9
2 8
9 9
9
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