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IC31 : TC94A70FG
Pin
Symbol
I/O
Description
No.
O
IPF
Correction flag output
56
3I/F
O
57
SFSY
Servo internal register read clock output pin
3I/F
O
Internal Audio DAC Zero data detection flag
ZDET
58
output
3I/F
I
CD General Input port(Pull down by 100K
GPIN
59
when not in use)
3I/F
I
Microprocessor I/F mode selection pin.
MS
60
3I/F
"L": Parallel I/F, "H": Serial I/F
O
Digital Audio output (SPDIF) pin
DoUT(Po6)
61
(DSP general output port -6)
3I/F
O
Audio data output pin -1(DSP general
62
AoUT1(Po7)
output port -7)
3I/F
O
Bit clock output pin for AoUT
BCKo(Po8)
63
(DSP general output port -8)
3I/F
O
L/R channel clock output pin
LRCKo(Po9)
64
(DSP general output port -9)
3I/F
I
Audio data input for Audio DAC
AiN(Pi4)
65
(DSP general input port -4)
3I/F
I
Bit clock input pin for AiN
BCKi(Pi5)
66
3I/F
(DSP general input port -5)
I
L/R channel clock for AiN
67
LRCKi(Pi6)
3I/F
(DSP general input port -6)
－
68
VDD1
Power supply pin for 1.5V digital circuit.
－
VSS
69
Grounding pin for 1.5V digital circuit.
O
AWRC
70
VCO control pin for active wide-range PLL
3AI/F
－
71
PVDD3
Power supply pin for 3.3V CD PLL circuit.
O
EFM and PLCK Phase difference signal
72
PDo
3AI/F
output pin.
O
TMAXS
73
TMAX detection result output pin
3AI/F
O
74
TMAX
TMAX detection result output pin
3AI/F
I
LPFN
75
PLL circuit LPF amplifier inversion input pin
3AI/F
O
LPFo
76
PLL circuit LPF amplifier Output pin
3AI/F
－
PVREF
77
PLL circuit 1.65 V reference voltage pin.
O
VCoF
78
VCO filter pin
3AI/F
－
PVSS3
79
Grounding pin for 3.3V CD PLL circuit.
EFM slice level output pin.
O
80
SLCo
Output impedance =2.5kΩ both of
3AI/F
analog/digital slice mode.
I
RF signal input pin
RFi
81
3AI/F
Zin is selectable by command.
I
RFRPi
82
RF ripple signal input pin
3AI/F
Pin
Symbol
I/O
Description
No.
O
RFEQo
83
RF equalizer circuit output pin.
3AI/F
O
VRo
84
1.65 V reference voltage output pin.
3AI/F
O
Pin for connecting a resistor for reference
RESiN
85
3AI/F
current generation.
－
VMDiR
86
Reference voltage output pin for LD APC.
O
LPF connection pin for RFEQO offset
87
TESTR
3AI/F
correction circuit.
I
AGCi
88
RF signal AGC amplifier input pin
3AI/F
O
RFo
89
RF signal generation amplifier output pin
3AI/F
Power supply for 3.3V RF amplifier core
－
RVDD3
90
circuit.
O
91
LDo
Laser diode amplifier output pin.
3AI/F
I
92
MDi
Monitor photodiode amplifier input pin.
3AI/F
－
RVSS3
93
Grounding pin for RF amplifier core circuit
I
Main beam signal input pin.
FNi2
94
To be connected to PIN diode C.
3AI/F
Main beam signal input pin.
I
FNi1
95
To be connected to PIN diode A.
3AI/F
I
Main beam signal input pin.
FPi2
96
To be connected to PIN diode D.
3AI/F
I
Main beam signal input pin.
FPi1
97
To be connected to PIN diode B.
3AI/F
I
Sub beam signal input pin.
TPi
98
3AI/F
To be connected to PIN diode F.
O
TNI/TPI input common capacitor connection
TNPC
99
3AI/F
pin.
I
Sub beam signal input pin.
100
TNi
3AI/F
To be connected to PIN diode E.
*
3A I/F : : 3 V analog circuit input/output pin.
1.5 I/F : 1.5Vdigital input/output pin.
3 I/F
: 3 V digital input/output pin.
Note: The servo output pins (FOO, TRO, FMO, and DMO) become undefined or GND level under the following
conditions:
/RST pin
Low
Crystal oscillation stopped according to the instructions by the Stop crystal oscillation command
Power supply for CD is OFF.
SRAMSTB pin = High
To prevent the undefined pin states from affecting the servo circuitry or any other mechanical blocks in the
system, appropriate measures should be taken, such as using a driver IC supporting a standby feature to
place the system in standby mode while either of the above conditions is satisfied.
Default
Remarks
O
CMOS PORT
O
CMOS PORT
O
CMOS PORT
I
Schmitt input
I
O
CMOS PORT
O
CMOS PORT
O
CMOS PORT
O
CMOS PORT
I
Schmitt input
I
Schmitt input
I
Schmitt input
－
－
Applicable in CLV/CAV
O
mode. Connect 0.033 uF.
－
4-state output (
PVDD3,
O
Hiz,PVSS3,PVREF)
3-state output
O
(PVDD3,PVSS3,HiZ)
3-state
O
output(PVDD3,PVSS3,HiZ)
Connect resister of LPF,
I
refer to application circuit
diagram.
Connect capacitor of LPF,
O
refer to application circuit
diagram.
Connected to VREF and
－
VRO inside of IC. Connect
0.1uF.
O
Connect 0.01uF.
－
Connect capacitor
O
according with servo
frequency band.
Zin：20kΩ，10kΩ，5kΩ
I
I
Default
Remarks
Connect to RFRPI by
O
0.1uF, to RFI by 4700pF.
Connected to VREF and
O
PVREF inside of IC.
Connect 0.1uF+100uF.
Connect 22kΩ//0.01uF.
O
－
Connect 0.1uF
Connect more than
O
0.015uF.
I
O
－
Reference
I
Voltage=178mVtyp.
－
I
I
I
I
I
Connect to VRO by
O
capacitor.
I
45
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