TC74A23F Datasheet, PDF (9/20 Pages) Toshiba Semiconductor – Toshiba CMOS Digital Integrated Circuit Silicon Monolithic

Pin
Number
Symbol
43
DOUT
44
SBSY
45
SBOK
46, 75
V_DD
47, 76
V_SS
48
P2V_REF
Pin Name
Function and Operation
Digital output in.
Sub code block sync output pin.
When sub code sync is detected, outputs
High at the S1 position.
Sub code Q data CRCC result output pin.
When the result is OK, outputs High.
Power supply pins for CD digital block.
Normally, 5 V is applied.
When CD is not used (CD off), the power
supply can be set to off except to the
controller, enabling only the controller to
operate. At this time, 1 must be set in the
CDoff bit. If pins from 11 to 18 and 39 to 42
are set as CD control signal input/output pins,
setting the CDoff bit to 1 switches all the pins
to an output port.
2V_REF pin for PLL block
TC94A23F
Remarks
V_DD
V_DD
MV_SS
¾
P2V_REF
49
PDO
Outputs phase error signal between the EFM
CD processor control and PLCK signals.
input/output
PV_REF
50
TMAX
51
LPFN
52
LPFO
53
PV_REF
54
VCOF
55
AV_SS
TMAX detection result output pin. Selected by
command bit TMPS.
Longer than the specified cycle: Outputs
P2V_REF.
Shorter than the specified cycle: Outputs Low
level (V_SS).
Within the specified cycle: at high impedance
P2V_REF
Inverted input pin for low-pass filter amp.
Output pin for low-pass filter amp.
V_REF pin for PLL block
VCO filter pin
Ground pin for analog block
PV_REF
LPFN
AV_DD
LPFO
PV_REF
VCOF
VCO
¾
9
2002-02-06