Marantz DV4100 User Manual download pdf (Page 113)

IC Descriptions.

GB 57ASD-1 9.

DSP for CD and DVD-ROM systems

SAA7335

FEATURES

• Compatibility with CD-I, CD-ROM, MPEG-video

DVD-ROM and DVD-video applications

• Designed for very high playback speeds

• Typical CD-ROM operation up to n = 12, DVD-ROM to

n = 1.9, maximum rates (tbf)

• Matched filtering, quad-pass error correction

(C1-C2-C1-C2), overspeed audio playback function

included (up to 3 kbytes buffer)

• Lock-to-disc playback, Constant Angular Velocity

(CAV), pseudo-Constant Linear Velocity (CLV) and CLV

motor control loops

• Interface to 32 kbytes SRAM for DVD error correction

and de-interleave

• Sub-code/ header processing for DVD and CD formats

• Programmable HF equalizer

• In DVD mode it is still compatible with Philips block

decoders

• Sub-CPU interface can be parallel or fast I

C-bus

• On-chip clock multiplier.

GENERAL DESCRIPTION

This device is a high-end combined Compact Disc (CD)

and Digital Versatile Disc (DVD) compatible decoding

device. The device operates with an external 32 kbytes

S-RAM memory for de-interleaving operations. The device

provides quad-pass error correction for CD-ROM

applications (C1-C2-C1-C2) and operates in lock-to-disk,

CAV, pseudo CLV and CLV modes.

In DVD modes double-pass C1-C2 error correction is used

which is capable of correcting up to 5 C1 frame errors and

16 C2 frame errors.

The SAA7335 contains all the functions required to

decode an EFM or EFM+ HF signal directly from the laser

pre-amplifier, including analog front-end, PLL data

recovery, demodulation and error correction. The spindle

motor interface provides both motor control signals from

the demodulator and, in addition, contains a tachometer

loop that accepts tachometer pulses from the motor unit.

The SAA7335 has two independent microcontroller

interfaces. The first is a serial I

C-bus and the second is a

standard 8-bit multiplexed parallel interface. Both of these

interfaces provide access to a total of 32 × 8-bit registers

for control and status.

This data sheet contains an descriptive overview of the

device together with electrical and timing characteristics.

For a detailed description of the device refer to the user

guide

“SAU/UM96018”

Supply of this CD/DVD IC does not convey an implied

license under any patent right to use this IC in any CD or

DVD application.

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

DDD

digital supply voltage 4.5 5.0 5.5 V

DDD

digital supply current − 70 300 mA

DDA

analog supply voltage 4.5 5.0 5.5 V

DDA

analog supply current − 70 300 mA

xtal

crystal input frequency 4 25 tbf MHz

amb

operating ambient temperature −20 − +70 °C

stg

storage temperature −55 − +125 °C

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Marantz DV4100 User Manual Page 113

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