Sony D-F21 / D-F22ST / ICD-BP220 Service Manual ▷ View online
9
D-F21/F22ST
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC61 TC9327AF-631 (TUNER PLL, LCD DRIVER)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
COM1 – 4
O
LCD driver signal output
5 – 20
S1 – 16
O
LCD driver signal output
21
AM STEP-I
I
AM 9K/10K tuning step select signal input (initialization)
22
DEST2-I
I
Bit2 tuner destination setting signal input (Fixed at “L” in this set)
23
DEST1-I
I
Bit1 tuner destination setting signal input (Fixed at “L” in this set)
24
DEST0-I
I
Bit0 tuner destination setting signal input (Fixed at “L” in this set)
25
XLOCAL/XMONO-DET-I
I
LOCAL/DX or MONO/STEREO ON-OFF switch detect signal input
26, 27
NC
—
Not used. (Open)
28
LCDREQ-I
I
LCD display request signal input
29
LID OPEN
I
CD door open detect signal input
30
EEP D0/D1-IO
I/O
Data signal input/output for EEPROM IC.
31
EEP SK-O
O
Clock signal output for EEPROM IC.
32
EEP CS-O
O
Chip select signal output for EEPROM IC.
33
XL/O-I
I
Line out signal input
34, 35
NC
—
Not used. (Open)
36
MEM-KEY (3-BIT)
I
Memory key signal input (Fixed at “H” in this set)
37
PRESET KEY
I
Not used in this set. (Open)
38
CD ACK-I
O
CD acknowledge signal output
39
CDON-IWP-CDU
I
CD ON request signal input (Wake-up tuner in sleep mode)
40
I/O (RESERVED)
—
Not used. (Open)
41
NC
—
Not used. (Open)
42
AD1 KEY
I
Set keys signal input
43
AD2 RMKEY
I
Remote key signal input (Fixed at “L” in this set)
44
AD3 BATT HIDC
I
Battery/HiDC level detect signal input
45
AD DC REF
I
Reference DC signal input of A/D.
46
SDI-I-CDU
I
Serial data signal input from system control IC.
47
SDO-O-CDU (RESERVED)
O
Serial data signal output to system control IC.
48
SCK-I-CDU
I
Serial clock signal input from system control IC.
49
TUBEEP-O
O
Beep sound control signal output
50
NC (I/O)
—
Not used. (Open)
51
XHOLD-I-SW
I
HOLD detect signal input
52
XAVLS-I-SW
I
AVLS detect signal input
53
XDC IN DET-I
I
DC-in detect signal input
54
TU ON-O
O
Tuner ON request signal output
55
ST OR DX-O-CTR
O
LOCAL/DX or MONO/STEREO ON-OFF control signal output
56
TUBASS2-O
O
MEGA BASS 2 sound mode signal output (Not used in this set)
57
TU TEST MODE
I
Tuner test mode detect signal input
58
TUBASS1-O
O
MEGA BASS 1 sound mode signal output (Not used in this set)
59
AM/XFM-O
O
Band control FM/AM signal output to tuner IC.
60
+B ON/OFF
O
Radio power ON/OFF signal output
61
IFREQ-O
O
IF request signal output
62
TUMUTE-O
O
Mute HP control signal output
63
TEST
—
Not used. (Open)
64
IFIN
I
FM/AM IF signal input
65
EO (DO1)
O
PLL error signal output
66
NC (DO2)
—
Not used. (Open)
67
HOLD
I
Not used. (Connect to ground in this set)
68
NC
—
Not used. (Open)
69
GND
—
Ground
70
FM IN
I
FM oscillation signal input
10
D-F21/F22ST
Pin No.
Pin Name
I/O
Pin Description
71
AM IN
I
AM oscillation signal input
72
VDD (1.8-2.2V)
—
Power supply pin
73
RESET
I
Power reset signal input
74
XOUT
O
Crystal oscillation signal output (75 kHz)
75
XIN
I
Crystal oscillation signal input (75 kHz)
76
VXT
—
Crystal oscillation signal pin
77
VLCD
—
LCD voltage doubler
78, 79
C1, 2
—
LCD voltage doubler
80
VEE
—
Constant voltage output to LCD.
11
D-F21/F22ST
• IC801 TMP88CM22AF-3H31 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
VSS
—
Ground
2
PWRSW
O
Headphone AMP IC power switch signal output
3
FOK I
I
Focus OK signal input from DSP IC. (“L”: NG, “H”: OK)
4
AGCPWM O
O
AGC control pulse signal output (Not used in this set)
5
CDON O
O
CD ON request signal output
6
SWEN2 O
O
CD/tuner select signal output
7
AMUTE O
O
Analog audio mute ON/OFF control signal output
8
VCC2ON O
—
Power supply pin (Not used in this set)
9
XRST O
O
Reset signal output to DSP IC.
10
SCK O
O
Serial data transfer clock signal output to DSP IC.
11
(SENS) SDTI I
I
Serial data signal input from DSP IC.
12
SDTO O
O
Serial data signal output to DSP IC.
13
SLPOUT O
O
WAKE-UP control signal output
14
AD CDTEST
I
CD test signal input (“L”: CD test) (Fixed at “H” in this set)
15
AD CHGMNT
I
Not used in this set. (Open)
16
AD RMKEY
I
Not used in this set. (Fixed at “L”)
17
AD BATMNT
I
Battery voltage detect signal input
18
AD CDKEY
I
Key signal input
19
AD RM INT
I
Not used in this set. (Open)
20
AD DCINMNT
I
DC-in voltage detect signal input (A/D input) and DC-in jack use/no use detect signal input.
21
WP OPEN
I
CD door open switch signal input
22
VREFL
I
Reference voltage signal input (0 V) for A/D converter.
23
VREFH
I
Reference voltage signal input (+2 V) for A/D converter.
24
VDD
—
Power supply pin (+2 V)
25
SCOR I
I
Sub-code sync (S0+S1) detect signal input from DSP IC.
26
GRSCOR I
I
GRSCOR signal input from DSP IC.
27
WFCK I
I
WFCK signal input from DSP IC.
28
BEEP O
O
Beep sound signal output to headphone AMP IC.
29
XCDRESET TU O
O
Reset signal output to DSP IC.
30
TUSCK O
O
Communication clock signal output to DSP IC.
31
(CD) SDI I
I
Communication data bus signal input from DSP IC.
32
(CD) SDO O
O
Communication data bus signal output to DSP IC.
33
RESERVE
—
Not used. (Open)
34
ACK CD I
I
CD acknowledge signal input
35
TUON I
I
Tuner ON request signal input
36
ESP
I
ESP switch signal input
37
L/O I
I
Line out signal input
38
AVLS I
I
AVLS switch signal input
39
HOLD I
I
HOLD switch signal input
40
CD-RW
I
Not used in this set. (Open)
41
—
—
Not used. (Open)
42
XHGON O
O
Not used in this set. (Open)
43
XTL O
O
Serial data latch pulse signal output
44
XSOE O
O
Serial data output enable signal output
45
TUVCPU O
O
Not used in this set. (Open)
46
POWLT O
O
Latch signal output to power control IC.
47
TUAUDIO O
O
Not used in this set. (Open)
48
XAPC OFF O
O
APC mute signal output (“L”: mute)
49
CDAUDIO O
O
Not used in this set. (Open)
50
RESERVE
—
Not used. (Open)
12
D-F21/F22ST
Pin No.
Pin Name
I/O
Pin Description
51
BASS1 O
O
Not used. (Fixed at “H” in this set)
52
BASS2 O
O
Not used. (Fixed at “H” in this set)
53
LCDREQ O
O
LCD display request signal output
54 – 64
SEG10 – 0
O
Not used in this set. (Open)
65 – 68
COM3 – 0
O
Not used in this set. (Open)
69 – 71
V3 – 1
O
Not used in this set. (Open)
72, 73
C1, 0
O
Not used in this set. (Open)
74
CDWP I
I
WAKE-UP control signal input
75
ICTEST
I
Test pin for IC. (Fixed at “L” in this set)
76
—
—
Not used. (Open)
77
—
—
Not used. (Fixed at “L” in this set)
78
RESET I
I
System reset signal input from power control IC. (“L”: reset)
79
XIN I
I
System clock signal input
80
XOUT
O
Not used in this set. (Open)
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