Sony D-NF400 Service Manual page 34

D-NF400/NF401
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MAIN BOARD IC3 TC9327AF-04CDW (DTS MICRO CONTROLLER)
Pin No. Pin Name
1 to 4 COM1 to COM4
5 to 20 S1 to S16
21 MODEL1
22 RE2
23 RE1
24 MODEL2
25 DESTVSS_O
26 AO_O
27 CS_O
28 LCD-REQ_I
29 XLID-OPEN_I
30 EEP DO/DI_IO
31 EEP-SK_O
32 EEP-CS_I
33 XL/O_I
34 RM-KEY_I
35 DEST
36 AD-KEY3_I
37 KEY2
38 TU-ON_O
TE
39 CD-ON_I
L 13942296513
40 TU-AVLS_O
41 TV-L-ON_O
42 AD-KEY1_I
43 BATT_I
44 HIDC_I
45 AD-DC_REF
46 CDU-SDI_I
47 CDU-SDO_O
48 CDU-SCK_I
49 TU-BEEP_O
50 VOL-PWM_O
51 TU-HOLD_I
52 BAND-CTL2_O
53 BAND-CTL1_O
54 ACK-CD_O
MONO/LOCAL-
55
CTR_O
56 S/W IDEN_I
57 XTU-TEST_I
58 XTU-BASS1_O
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59 XTU-BASS2_O
60 +B ON/OFF_O
61 IF-REQ_O
.
62 TU-MUTE_O
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I/O
O Common drive signal output to the liquid crystal display Not used
O Segment drive signal output to the liquid crystal display Not used
I Key setting selection terminal Fixed at "L" in this set
O AM mode DC/DC converter frequency shift signal output terminal Not used
O AM mode DC/DC converter on/off control signal output terminal
O Not used
O Destination setting terminal
O AO signal output to the LCD unit
O Chip select signal output to the LCD unit
I Request signal input from the system controller
I CD lid switch signal input terminal
I/O Serial data input/output terminal Not used
O Serial data transfer clock signal output terminal Not used
O Chip select signal output to the EEPROM
I Line out jack detection terminal Not used
I Not used
I Destination setting terminal
I Not used
I Key input terminal
O Tuner on request signal output to the system controller
I CD on request signal input from the system controller
O Not used
O Not used
I Key input terminal
I Battery voltage detection input terminal
I High DC voltage monitor input terminal
I Reference voltage (+1.5V) input terminal (for DC)
I Serial data input from the system controller and EEPROM
O Serial data output to the system controller and EEPROM
I Serial data transfer clock signal input from the system controller
O Beep sound control signal output to the electrical volume
O Volume control PWM signal output for the electrical volume
I HOLD switch signal input terminal
O Tuner band selection signal output terminal "H": AM
O Tuner band selection signal output terminal "H": FM
O CD acknowledge signal output to the system controller
O Local/DX or Mono/Stereo selectionl signal output terminal
O Line/headphone out selection signal output terminal Not used
I Test mode setting input terminal "L": test mode, Normally: "H"
O Bass on/off control signal output to the electrical volume
O Bass line/headphone out selection signal output to the electrical volume
O Tuner system power supply on/off control signal output "H": tuner power on
x ao
y
O Intermediate frequency request signal output terminal
i
O Muting on/off control signal output to the electrical volume
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