Yamaha CDX-97 Service Manual download pdf (Page 16)

CDX-497/CDX-397

–

To be fixed at “H” or “L” when com-

munication is not in progress, so

that the pin will not become HiZ.

To be fixed at “H” when communi-

cation is not in progress, so that

the pin will not become HiZ.

To be connected to 0.1 uF.

–

Genelal-purpose I/O (input after a

reset).

The playback speed mode flag

output can be switched, using

command bits.

–

General-purpose I/O (input after a

reset).

As per CP-1201

–

Normal speed: 32fs = 1.4112 MHz

Normal speed: 44.1kHz

1-bit DAC external input

Controllable in CLV/CAV.

–

Quaternary output (PVDD3, HiZ,

VSS, and PVREF).

Ternary output (PVDD3, VSS, and

Hiz).

VDDM

VSS1

BUS0

BUS1

BUS2

BUS3

BUCK

/CCE

/RST

STBY

VDDT

FGIN

IO0A

(/HSO)

IO1A

(/UHSO)

TESTD

VSSP

VCOI

VDDP

TESTC

PIO0

PIO1

PIO2

PIO3

DOUT

AOUT

BCK

LRCK

AIN

BCKI

LRCKI

VDD1

VSS1

AWRC

PVDD3

PDO

TMAX

1.5V supply voltage pin dedicated to the DSP/1Mbit SRAM

circuit.

1.5V groundind pin dedicated to the DSP/1Mbit SRAM circuit.

Data input/output pin for the microcontroller interface.

Clock input pin for the microcontroller interface.

Chip enable signal input pin for the microcontroller interface.

BUS3 to BUS0 are active if this pin is “L”.

Reset signal input pin. The internal registers and servo section

registers are reset, respectively, when the reset signal is “L”

and on the positive-going edge of the reset signal.

STANDBY control pin dedicated to the DSP/1Mbit SRAM

circuit.

3.3V supply voltage pin dedicated to the Digital I/O circuit.

FG signal input pin for CAV.

CLV: “L”. CAV: FG input.

Genelal-purpose input/output pins.

(Pin for outputting the playback speed mode flag.)

DSP/Test input pin. Usually fixed at “L”.

1.5V grounding pin dedicated to the DSP/VCO circuit.

PD output pin dedicated to the DSP/VCO circuit.

1.5V supply voltage pin dedicated to the DSP/VCO circuit.

CD/Test input pin. Usually fixed at “L”.

General-purpose I/O (CD/DSP)

General-purpose I/O (DSP)

Digital-out output pin. Digital data for up to double speed can

be output when a frequency of 16.9344 MHz is used.

Audio data output pin. Which bit is first (MSB first or LSB first)

can be selected, using a command.

Bit clock output pin. 32fs, 48fs, and 64fs can be selected,

using a command.

LR channel clock output pin. L for the L-channel and “H” for

the R-channel. The output polarity can be inverted, using a

command.

1-bit DAC external input: AIN

1-bit DAC external input: BCKI

1-bit DAC external input: LRCKI

1.5V supply voltage pin dedicated to the DSP circuit.

1.5V grounding pin dedicated to the DSP circuit.

VCO control pin for active wide range.

3.3V supply voltage pin dedicated to the PLL circuit.

Pin for outputting a phase difference signal between the EFM

signal and PLCK signal.

Pin for outputting the result of TMAX detection.

The TMAX pin output the same signal.

–

I/O

3I/F

I/O

3I/F

I/O

3I/F

I/O

3I/F

–

3AI/F

I/O

3I/F

I/O

3I/F

–

1.5AI/F

–

3I/F

I/O

3I/F

I/O

3I/F

I/O

3I/F

I/O

3I/F

–

3AI/F

–

3AI/F

Remark

IC21 : TC94A54 (MAIN P.C.B)

DSP

Pin No. Pin name FunctionPin name

100

LPFN

LPFO

PVREF

VCOF

VCOREF

PVSS3

SLCO

RFI

RFRPI

RFEQO

RESIN

VRO

VMDIR

TESTR

INVSEL

AGCI

RFO

PNSEL

EQSET

RVDD3

LDO

MDI

RVSS3

FNI2

FNI1

FPI2

FPI1

TPI

TNI

FTE

3AI/F

–

3AI/F

–

3AI/F

–

3AI/F

–

3AI/F

–

3AI/F

Pin for receiving an inverted output of the PLL-circuit low-pass

filter amp.

Pin for the PLL-circuit low-pass filter amp output.

1.65V reference supply voltage pin dedicated to the PLL

circuit.

VCO filter pin.

Input pin for the VCO center frequency reference level.

3.3V grounding pin dedicated to the PLL circit.

EFM slice level output pin.

For both analog and digital slice modes, the output impedance

= 2.5 k-ohms.

RF signal input pin.

The input resistance can be selected, using a command.

RF ripple signal input pin.

RF equalizer circuit output pin.

Pin for connecting a reference current generating resistance.

1.65V reference voltage output pin.

Reference voltage poutput pin for the APC circuit.

LPF pin for RFEQO offset correction.

Test pin, usually fixed at “L”.

Pin for RF signal amplitude adjustment amp input.

RF signal peak detsction input pin.

RF signal generation amp output pin.

Test pin, usually fixed at “H”.

External connection pin for the RF signal equalizer.

3.3V supply voltage pin for the Rfamp core section.

Laser diode amp output pin.

Monitor photodiode amp input pin.

3.3V grounding pin for the RF amp core section.

Main beam input pin.

Connected to PIN diode C.

Main beam input pin.

Connected to PIN diode A.

Main beam input pin.

Connected to PIN diode D.

Main beam input pin.

Connected to PIN diode B.

Subbeam input pin.

Connected to PIN diode F.

Subbeam input pin.

Connected to PIN diode E.

Focus /tracking signal output.

(Test pin for servo characteristic measurement.)

The resistance side is connected.

See an applicable circuit diagram.

The capacitor side is connected.

See an spplicable circuit diagram.

Connected to the VREF and PVREF

within the IC.

A 0.1 uF capacitor is connected.

–

To be connected to the PVREF if

the AWRC is not used.

–

A capacitor to be connected is se-

lected according to the servo op-

eration band.

Zin: 20 k-ohms, 10 k-ohms, 5 k-

ohms

–

To be connected to the RFRPI via

0.1 uF and to the RFI via 4700 pF

or higher.

To be connected to 22 k-ohms

and 680 pF in parallel.

Connected to the VREF and

PVREF within the IC

To be connected to 0.1uF anf 100

uF.

To be connected to 0.1uF.

To be connected to 0.015 uF or

higher.

–

To be connected directly to the

RFDCI.

To ne connected to the AGCI via

0.1 uF.

To be kept open when the RFEQ

is used.

–

Reference to 178 mV (typ.)

–

Switchable using a command.

I/OPin No. Pin name Description Remark

Note: “3AI/F : 3V circuit analog input/output pin.”

“3I/F : 3V circuit digital input/output pin.”

“1.5AI/F : 1.5V circuit analog input/output pin.”

IC21 : TC94A54 (MAIN P.C.B)

DSP

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Yamaha CDX-97 Service Manual Page 16

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