Overview

The LC895297 is a single-chip CD-ROM decoder and
CD-DSP system that supports full CAV 20

operation and

includes a built-in ATA-PI (IDE) interface.

Functions

· Full CAV 20

CD-DSP and CD-ROM decoder

functions with built-in ATA-PI (IDE) interface

Features

[CD-ROM Decoder and ATA-PI (IDE) Interface Blocks]

· Full CAV 20

operation

· ATA-PI (IDE) interface
· Supports the use of EDO DRAM.
· Supports the use of up to 4 Mbits of buffer RAM.
· The user can set up arbitrary CD main channel and C2

flag areas in buffer RAM.

· Batch transfer function (function that automatically

transfers the CD main channel and C2 flag data in a
single operation.)

· Multi-block transfer function (function that

automatically transfers multiple blocks in a single
operation.)

· DVD ECC interface
· Intelligent functions

[CD-DSP Block]
· The IC inputs a high-frequency signal, slices that signal

at the correct level, converts that result to an EFM coded
signal, and compares the phase with that of the built-in
VCO.

· Uses an external 16.9344-MHz crystal element to

generate a standard clock and to correctly generate the
required internal timings.

· Performs frame synchronization, signal detection,

protection, and insertion, and assures stable data
readout.

· Demodulates the EFM coded signal to produce 8-bit

symbol data.

· After applying a CRC check to the subcode Q signal,

outputs that signal to a microprocessor over a parallel

I/O channel.

· Performs unscrambling and de-interleaving to reorder

the demodulated EFM signal in the prescribed manner.

· Performs error code detection and correction, and flag

processing. (C1: dual errors, C2: four errors)

· Sets the C2 flags based on the C1 flags and a C2 check,

and performs interpolation or muting depending on the
C2 flags. Adopts a 2-point interpolation circuit, and
converges the signal to the muting level if the C2 flags
indicate over 2 consecutive uncorrectable errors.

· Accepts the input of commands from a control

microprocessor over an 8-bit parallel interface. Supports
track jump, disc motor start/stop, muting on/off, and
track counting commands.

· Can perform arbitrary track counts.
· Includes CAV audio functions.
· Adopts zero-cross muting.
· Includes 8

oversampling digital filters.

· D/A converter with PWM output.
· Includes independent left and right channel digital

attenuators.

· Provides digital deemphasis.
· Supports bilingual functions.

Package Dimensions

unit: mm

3230-SQFP176

CMOS LSI

22898HA (OT) No. 5785-1/9

Preliminary

SANYO: SQFP176

[LC897297]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN

Full CAV 20

CD-ROM Decoder with

Built-in ATA-PI (IDE) Interface and CD-DSP

LC895297

Ordering number : EN

5785

No. 5785-2/9

LC895297

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

max

0.3 to +7.0

Input and output voltage

, V

0.3 to V

+0.3

Allowable power dissipation

Pd max

70°C

500

Operating temperature

Topr

30 to +70

°C

Storage temperature

Tstg

55 to +125

°C

Soldering conditions (pins only)

10s

235

°C

Input and output current

, I

Per individual input or output cell

±20

Note 1: Applications that use this IC must adopt heat dissipation measures, such as the insertion of a thermally conductive sheet.

Specifications

Absolute Maximum Ratings

at Ta = 25°C, V

= 0 V

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

[Input and Output Cell Power Supply]

Supply voltage

4.5

5.0

5.5

Input voltage range

[Internal Cell Power Supply]

Supply voltage

3.9

4.0

4.1

Input voltage range

Allowable Operating Ranges

at Ta = 30 to +70°C, V

= 0 V

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Input high-level voltage

TTL levels. Applicable pins: (10) and (13)

2.2

Input low-level voltage

VIL

0.8

Input high-level voltage

TTL levels. Applicable pins: (1)

2.2

Input low-level voltage

Pull-up resistor included.

0.8

Input high-level voltage

TTL levels. Applicable pins: (2), (3), and (15)

2.4

Input low-level voltage

Schmitt inputs.

0.8

Input high-level voltage

CMOS levels: Applicable pins: (14)

0.7 V

Input low-level voltage

0.3 V

Input high-level voltage

CMOS levels: Applicable pins: (4)

0.8 V

Input low-level voltage

Schmitt inputs.

0.2 V

Output high-level voltage

= 2 mA: Applicable pins: (5), (1), (9),

2.1

(10), and (15)

Output low-level voltage

= 2 mA: Applicable pins: (5), (1), (9),

0.4

(10), and (15)

Output high-level voltage

= 4 mA: Applicable pins: (3) and (6)

2.1

Output low-level voltage

= 24 mA: Applicable pins: (3) and (6)

0.4

Output low-level voltage

= 2 mA: Applicable pins: (7) and (11)

0.4

Output low-level voltage

= 24 mA: Applicable pins: (12)

0.4

Input leakage current

= V

, V

: Applicable pins: (2), (3), (4),

+10

µA

(10), and (15)

Output leakage current

In high-impedance output mode: Applicable

+10

µA

pins: (3), (6), (7), (9), (10), (12), and (15)

Pull-up resistance

Applicable pins: (1) and (11)

160

Electrical Characteristics

at Ta = 30 to +70°C, V

= 0 V, V

= 4.5 to 5.5 V

The applicable pin sets are as follows:
[INPUT]
(2) ZRESET, ZDMACK, ZHRST, DA0to DA2, ZCS1FX, ZCS3FX, ZDIOR, ZDIOW, FG
(4) ZCSCTRL, ZCS, ZRD, ZWR, HFL, TES
(14) DEFI
(13) SUA0 o SUA6
[OUTPUT]
(6) DMARQ, HINTRQ
(5) RA0 to RA8, ZRAS0, ZCAS0, ZOE, ZUWE, ZLWE, C2F, ROMXA, FSX, EFLG, PCK, FSEQ, TOFF, TGL, 4.2M, WRQ, RWC, COIN, ZCQCK, RCHP,

RCHN, LCHP, LCHN

(7) ZRSTCPU, ZRSTIC
(9) JP

, JP

, SPO

(11) ZINT0, ZINT1, ZSWAIT
(12) IORDY, ZIOCS16

Continued on next page.

No. 5785-3/9

LC895297

[INOUT]
(1) D0 to D7, IO0 to IO15
(3) DD0 to DD15, ZDASP, ZPDIAG
(10) IOP0 to IOP7
(15) DRESP, DREQ

Note: XTAL, XTALCK, R0, VCNT0, PDO0, R1, VCNT1, PO11, PO21, BSN1, R2, VCNT2, PO12, PO22, and BSN2

The above pins are not covered by the electrical characteristics.
The 1-bit D/A converter block pins are only measured using a logic tester; no analog measurements are performed.

Continued from preceding page.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Input high-level voltage

Micro-signal amplifier. Applicable pins: EFMI

3.2

Input low-level voltage

1.8

Output high-level voltage

= 4 mA. Applicable pins:

2.1

EFMO and ZEFMO

Output low-level voltage

= 4 mA. Applicable pins:

0.4

EFMO and ZEFMO

Input leakage current

= V

, V

: Applicable pins: EFMI

+10

µA

Output leakage current

In high-impedance mode: Applicable pins:

+10

µA

EFMO and ZEFMO

Electrical Characteristics

at Ta = 30 to +70°C, V

= 0 V, V

= 4.5 to 5.5 V

EFM Input and Output Signals

External Clock Generator PLL Circuit

Figure 1 PLL Circuit

While the circuit structure is fixed, the values of the components will vary with the circuit board capacitance and other application circuit parameters.

Symbol

Currently used value

Notes

7.5 k

VCO adjustment resistor

10 k

Low-pass filter resistor

200

Low-pass filter phase compensation resistor

0.1 µF

Low-pass filter capacitor

0.1 µF

VCO bias stabilization capacitor

Pin Functions

I : Input pin, O: Output pin, B : Bidirectional pin, P: Power supply pin, NC: Not connected

No. 5785-5/9

LC895297

Pin No.

Pin name

Type

Function

SS0

VCO bias resistor connection

VCNT0

VCO control voltage input

PDO0

Charge pump output

TEST0

Test pins

TEST1

IOP0 (HDB7)

IOP1 (HDB6)

IOP2 (HDB5)

IOP3 (HDB4)

General-purpose I/O ports

IOP4 (HDB3)

These pins are used for DVD ECC data input when the DVD interface is used.

IOP5 (HDB2)

IOP6 (HDB1)

IOP7 (HDB0)

DD2

4.0 V

TEST3

Test pin

TEST4

Test pin

DRESP

DVD ECC data latch signal input

DREQ

DVD ECC data request output

RCHP

1-bit D/A converter right channel P output

RCHN

1-bit D/A converter right channel N output

DD1

1-bit D/A converter left and right channel power supply

SS1

1-bit D/A converter right channel ground

LCHP

1-bit D/A converter left channel P output

LCHN

1-bit D/A converter left channel N output

SS0

XTALCK

Crystal oscillator circuit input (16.9344 MHz)

XTAL

Crystal oscillator circuit output

SS0

ZRSTCPU

CPU reset signal output

ZRSTIC

Drive IC reset signal output

ZRESET

IC reset input

Microcontroller data signal connection.

These pins include built-in pull-up resistors.

Continued on next page.

Part Number LC895297