D-F21, D-F22ST, ICD-BP220 - Sony Audio Service Manual (repair manual). Page 11

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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)
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