Sony D-NF400 Service Manual page 32

D-NF400/NF401
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MAIN BOARD IC801 TMP91CY28FG-2772-01 (SYSTEM CONTROLLER)
Pin No. Pin Name
1, 2 GND
3 VCPU
4 XRST_O
5 PWM_O
6 BEEP_O
7 AMUTE_O
8 LINEOUT_I
9 OPTOUT_I
10 FG_I
11 REQ_I
12 HG-XSTB_O
13 HG-GUP_O
14, 15 RE1_I, RE2_I
16 LCD_REQ_O
17 SDXLAT_O
18 SDCLK_O
19 SDOUT_O
20 SDIN_I
21 DTS_SDTO
22 DTS_SDTI
TE
23 DTS_SCK
L 13942296513
24 AMO_I
25 VCPU
26 XOUT
27 GND
28 XIN
29 AM1_I
30 XRESET_I
31 TSB
32 XWAKE_O
33 EMU0_O
34 EMU1_O
35 ACKCD_I
36 WAKE_I
37 LID-SW_I
38 EXTBAT_I
39 XLCD_CJK_I
40 HOLD_I
41 XCE_CEL_I
42 TEST_I
43 NC
www
44 to 51 AD0 to AD7
52 FOK_I
53 GFS_I
.
54 TUPWRON_O
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I/O
— Ground terminal
— Power supply terminal (+2.0V)
O System reset signal output to the CD DSP
O Power on/off signal output terminal Not used
O Beep signal output to the electrical volume
O Analog muting on/off control signal output to the CD DSP
I Not used
I Not used
I Motor flag monitor input from the power control
I Request signal input from the MP3 decoder
O Strobe signal output to optical pick-up block
O Guide-up signal output to optical pick-up block
I Encode signal input terminal Not used
O Request signal output to the DTS micro controller
O Data latch signal output to the MP3 decoder
O Serial data transfer clock output to the MP3 decoder and EEPROM
O Serial data output to the MP3 decoder and EEPROM
I Serial data input from the MP3 decoder and EEPROM
O Serial data output to the DTS micro controller, EEPROM and LCD unit
I Serial data input from the DTS micro controller, EEPROM and LCD unit
O Serial data transfer clock output to the DTS micro controller
I Not used
— Power supply terminal (+2.0V)
O Not used
— Ground terminal
I System clock signal input from the CD DSP
I Not used
I System reset signal input from the power control
I Not used
O WAKE-UP signal output to the power control
O Not used
O Not used
I CD acknowledge signal input from the DTS micro controller
I KEY interrupt signal input terminal
I CD lid switch signal input terminal
I Not used
I Not used
I HOLD switch signal input terminal
I Not used
I Test mode setting input terminal "L": test mode, Normally: "H"
— Not used
I/O Address and data input/output with the LCD unit
x ao
I Focus OK signal input from the CD DSP
y
I GFS signal input from the CD DSP
i
O Tuner power on/off control signal output terminal
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8
Description
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3 6 7 1 3
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2 9 9 4 2 8
"H": muting on
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9