Sony HCD-EC55 Service Manual page 51

• IC Pin Function Description
BD90 BOARD IC101 TC94A70FG-006 (RF AMP, DSP, MP3)
Pin No. Pin Name
1 AVSS3
2 RFZi
3 RFRP
4 SBAD/RFDC
5 FEi
6 TEi
7 TEZi
8 AVDD3
9 FOo
10 TRo
11 VREF
12 FMo
13 DMo
14 VSSP3
15 VCOi
16 VDDP3
17 VDD1
18 VSS1
19 FGiN
20 Io0(/HSo)
21 Io1(/UHSo)
22 XVSS3
23 Xi
24 Xo
25 XVDD3
26 DVSS3
27 Ro
28 DVDD3
29 DVR
30 Lo
31 DVSS3
32 VDDT3
33 VSS1
34 VDD1
35 VDDM1
36 SRAMSTB
37 /RST
38 BUS0
39 BUS1
40 BUS2(So)
41 BUS3(Si)
42 BUCK(CLK)
43 /CCE
44 TEST
45 IRQ
46 AoUT3(Po4)
47 AoUT2(Po5)
I/O
— Ground terminal (Used CD analog 3.3V)
I RF ripple zero cross signal input terminal
O RF ripple signal output terminal
O Select terminal of sub beam output and RF peak detect signal (Not used (Open))
O Focus error signal output terminal (Not used (Open))
O Tracking error signal output terminal (Not used (Open))
I Tracking error signal input terminal (Used zero cross)
— Power supply terminal (Used CD analog 3.3V)
O Focus servo equalizer output terminal
O Tracking servo equalizer output terminal
— REF of analog power supply terminal
O Feed servo equalizer output terminal
O Disc servo equalizer output terminal
— Ground terminal (Used DSP VOC 3.3V)
O PD output terminal (Used VCO)
— Power supply terminal (Used DSP VCO 3.3V)
— Power supply terminal (Used digital 1.5V)
— Ground terminal (Used digital 1.5V)
I FG signal input terminal (Used CAV) (Not used (Fixed to "L"))
I Play speed mode flag input terminal
I Play speed mode flag input terminal (Not used (Open))
— Ground terminal (Used system clock 3.3V)
I System clock input terminal (16.934MHz)
O System clock output terminal (16.934MHz)
— Power supply terminal (Used system clock 3.3V)
— Ground terminal (Used DAC)
O Audio R-ch data output terminal
— Power supply terminal (Used DAC 3.3V)
— REF voltage terminal (Used DAC)
O Audio L-ch data output terminal
— Ground terminal (Used DAC 3.3V)
— Power supply terminal (Used Digital I/O 3.3V)
— Ground terminal (Used Digital 3.3V)
— Power supply terminal (Used digital 1.5V)
— Power supply terminal (Used 1M bit SRAM 1.5V)
I 1M bit SRAM standby input terminal (Not used (Fixed to "L"))
I Reset signal input terminal
I Data input terminal (BUS line)
I Data input terminal (BUS line)
I Data input terminal (Serial output)
I Data input terminal (Serial input)
I BUS clock input terminal (Serial clock input)
I Clip enable input terminal (U-com interface)
I Test setting terminal (Not used (Fixed to "L"))
I Cut in DSP input terminal (Not used (Fixed to "L"))
O BSIF ST-REQ signal output terminal (Not used (Open))
O Audio data output 2 terminal (Not used (Open))
HCD-EC55/EC77/GX99
Description
51