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