Sony HCD-EC55 Service Manual page 51

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• IC Pin Function Description
BD90 BOARD IC101 TC94A70FG-006 (RF AMP, DSP, MP3)
Pin No. Pin Name
1
2
3
4 SBAD/RFDC
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 Io0(/HSo)
TE
L 13942296513
21 Io1(/UHSo)
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36 SRAMSTB
37
38
39
40 BUS2(So)
41 BUS3(Si)
www 42 BUCK(CLK)
43
44
.
45
46 AoUT3(Po4)
47 AoUT2(Po5)
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I/O
AVSS3 — Ground terminal (Used CD analog 3.3V)
RFZi I RF ripple zero cross signal input terminal
RFRP O RF ripple signal output terminal
O Select terminal of sub beam output and RF peak detect signal (Not used (Open))
FEi O Focus error signal output terminal (Not used (Open))
TEi O Tracking error signal output terminal (Not used (Open))
TEZi I Tracking error signal input terminal (Used zero cross)
AVDD3 — Power supply terminal (Used CD analog 3.3V)
FOo O Focus servo equalizer output terminal
TRo O Tracking servo equalizer output terminal
VREF — REF of analog power supply terminal
FMo O Feed servo equalizer output terminal
DMo O Disc servo equalizer output terminal
VSSP3 — Ground terminal (Used DSP VOC 3.3V)
VCOi O PD output terminal (Used VCO)
VDDP3 — Power supply terminal (Used DSP VCO 3.3V)
VDD1 — Power supply terminal (Used digital 1.5V)
VSS1 — Ground terminal (Used digital 1.5V)
FGiN 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))
XVSS3 — Ground terminal (Used system clock 3.3V)
Xi I System clock input terminal (16.934MHz)
Xo O System clock output terminal (16.934MHz)
XVDD3 — Power supply terminal (Used system clock 3.3V)
DVSS3 — Ground terminal (Used DAC)
Ro O Audio R-ch data output terminal
DVDD3 — Power supply terminal (Used DAC 3.3V)
DVR — REF voltage terminal (Used DAC)
Lo O Audio L-ch data output terminal
DVSS3 — Ground terminal (Used DAC 3.3V)
VDDT3 — Power supply terminal (Used Digital I/O 3.3V)
VSS1 — Ground terminal (Used Digital 3.3V)
VDD1 — Power supply terminal (Used digital 1.5V)
VDDM1 — Power supply terminal (Used 1M bit SRAM 1.5V)
I 1M bit SRAM standby input terminal (Not used (Fixed to "L"))
/RST I Reset signal input terminal
BUS0 I Data input terminal (BUS line)
BUS1 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)
/CCE I Clip enable input terminal (U-com interface)
x ao
y
TEST I Test setting terminal (Not used (Fixed to "L"))
i
IRQ 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))
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HCD-EC55/EC77/GX99
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Description
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