Toshiba TC9457F - Manual (Page 7)

TC9457F
2002-10-21 7
Pin No. Symbol Pin Name Function And Operation Remarks
45 SBOK
Subcode Q data CRCC determination result output pin. It
outputs a high when CRCC check is found OK.
―
46, 75 V
DD
―
47, 76 V
SS
CD unit's digital block power supply pins.
Normally, apply 5 V to V
DD
.
When not using a CD (CD off), this power supply can be
turned off, with only the controller power supply kept
active, so that the controller alone is operating. In this
case, the CDoff bit must be set to 1. When this bit is set to
1, pins 11 through 18 and pins 39 through 42 all are
changed for output ports if they have been set for CD
control signal input/output pins.
―
48 P2V
REF
PLL block-2 V
REF
pin. ―
49 PDO
This pin outputs a phase error between EFM and PLCK
signals.
―
50 TMAX
TMAX detection result output pin. Selected by command
bit TMPS.
Longer than preset period : Outputs P2V
REF
.
Shorter than preset period : Low level (V
SS
).
Within preset period : High impedance.
―
51 LPFN Inverted input of low-pass filter amp. Analog input
52 LPFO Output of low-pass filter amp. Analog output
53 PVREF PLL block V
REF
pin. ―
54 VCOF VCO filter pin. Analog output
55 AV
SS
Analog block ground pin. ―
56 SLCO DAC output pin for data slice level generation. Analog output
57 RFI RF signal input pin.
Analog input
(Zin : command select)
58 AV
DD
Analog block power supply pin. ―
59 RFCT RFRP signal center level input pin. Analog input (Zin = 50 kΩ)
60 RFZI RFRP zero-cross input pin. Analog input
61 RFRP RF ripple signal input pin. Analog input
62 FEI Focus error signal input pin. Analog input
63 SBAD Subbeam add signal input pin. Analog input
64 TEI
Tracking error input pin. This input is read when tracking
servo is on.
Analog input
65 TEZI Tracking error zero-cross input pin. Analog input (Zin = 10 kΩ)
66 FOO Focus equalizer output pin.
Analog output
(2V
REF
to AV
SS
)
67 TRO Tracking equalizer output pin.
Analog output
(2V
REF
to AV
SS
)
68 V
REF
Analog reference power supply pin. ―
69 RFGC
RF amplitude adjusting control signal output pin. It outputs
3-level PWM signals. (PWM carrier = 88.2 kHz)
―
70 TEBC
Tracking balance control signal output pin. It outputs
3-level PWM signals.
(PWM carrier = 88.2 kHz)
―
71 FMO
Focus equalizer output pin. It outputs 3-level PWM
signals.
(PWM carrier = 88.2 kHz)
―
72 DMO
Disc equalizer output pin. It outputs 3-level PWM signals.
(PWM carrier = DSP block 88.2 kHz, synchronized to
PXO)
―
73 2V
REF
CD control
input/outputs
Analog reference power supply pin. (2 × V
REF
) ―