36
RCD-M37 / RCD-M37DAB / D-E500 / D-M37
TC94A70FG Terminal Function
Pin
No.
Symbol I/O  Description  Default  Remarks 
1
AVSS3
㧙
Grounding pin for 3.3V CD analog circuits.
㧙
2
RFZi
I
3AI/F
Input pin for RF ripple zero-cross signal.  I 
Connect to RFRP by 
0.033uF 
3
RFRP
O
3AI/F
RF ripple signal output pin.  O 
4
SBAD/RFDC
O
3AI/F
Sub beam addition signal or 
RFDC (Hologram PUH RF peak detection 
signal) signal output pin 
O
5
FEi
O
3AI/F
Focus error signal input pin.  O 
6
TEi 
O
3AI/F
Tracking error signal input pin.  O 
Monitor pin for the signal. 
7
TEZi 
I
3AI/F
Tracking error signal zero-cross input pin.  I  Connect to TEI by 0.033uF
8
AVDD3
㧙
Power supply pin for 3.3 V CD analog 
circuits.
㧙
9
Foo 
O
3AI/F
Focus servo equalizer output pin.  O 
10
TRo 
O
3AI/F
Tracking servo equalizer output pin. 
O
Built-in series resister 3.3k
ǡ
11
VREF
㧙
Reference voltage pin for analog 
circuits(1.65V) 
㧙
Connect to VRO and 
PVREF. Connect 0.1uF 
12
FMo 
O
3AI/F
Feed servo equalizer output pin.  O 
13
DMo
O
3AI/F
Disc servo equalizer output pin  O 
Built-in series resister 
3.3kǡ 3-state output 
(AVDD3,AVSS3,VREF) 
14
VSSP3
㧙
Grounding pin for 3.3V DSP VCO circuits. 
㧙
15
VCOi O 
PD output for VCO (control voltage input 
for VCO) 
O Three-state output 
16
VDDP3
㧙
Power supply pin for 3.3V DSP VCO 
circuit.
㧙
17
VDD1
㧙
Power supply pin for 1.5V digital circuit 
㧙
18
VSS
㧙
Grounding pin for 1.5V digital circuit. 
㧙
19
FGiN
I
3I/F
FG signal input pin for CAV. 
CLV: "L", CAV: FG input 
I Analog input 
20
io0(/HSo)
I/O
3I/F
General Input/output port -0 (CD) 
(Playback speed mode flag output pin.) 
I
Schmitt input 
CMOS PORT 
21
io1(/UHSo) 
I/O
3I/F
General Input/output port -1 (CD) 
(Playback speed mode flag output pin.) 
I
Schmitt input 
CMOS PORT 
22
XVSS3 
㧙
Grounding pin for 3.3V system clock 
oscillator circuit. 
㧙
23
Xi
I
3AI/F
Input pin for system clock oscillator   
Circuit (External Rfb=1M:)
I X'tal 
24
Xo
O
3AI/F
Output pin for system clock oscillator 
circuit
O X'tal 
25
XVDD3  㧙
Power supply pin for 3.3 V system clock 
oscillator circuit 
㧙