Sanyo EP93F manual LC78648NEH

Super System-on-Chip Digital Servo IC with On-Chip RF System

LC78648NEH	Conditional ❋ : Use of conditional products requires
	development
	Product	consultation with a SANYO representative
		prior to the use of the device.

Under

Overview

The LC78648NEH integrates, on a single chip, the RF signal processing, servo control, EFM signal processing, and audio signal processing required for audio CD playback.

This single IC can perform all the CD data signal processing required to convert the signal read from the disc to an analog audio signal. A basic CD player system can be implemented with just three ICs

(this IC, a microcontroller, and a driver IC) and a minimal number of external components.

Features

Compact Discc PlayerPlayer MP3MP3 DecoderDecoder

LC78684E4E	ProductProduct	:: UseUse ofof conditionalconditional productsproducts requiresrequires
	❋❋
	ConditionalConditional	consultationconsultation withwith aa SANYOSANYO representativerepresentative
		priorprior toto thethe useuse ofof thethe devicedevice..

Overview

The LC78684E integrates, on a single chip, CD-ROM signal-processing functions, MP3 signal-processing functions, and CD-DA anti-skip signal-processing functions.

These signal-processing functions are implemented as hard-wired circuits for reduced power consumption. The LC78684E, in combination with a CD DSP, DRAM, an audio D/A converter, and other devices can implement CD players that provide playback of MPEG layer 3 (MP3) audio recorded on CD media as well as anti-skip CD-DA playback.

Features

■Playback functions

◆Playback speeds: 1 , 2 - CD-R/W: 1 , 2

◆Jitter-free playback (VCEC)

■RF processing block

◆RF system: AGC, CD-R and R/W playback, peak hold, bottom hold

◆Error system: Variable balance TE signal playback, FE signal playback

◆Detection: Track count signal, jitter, defect (black and mirror) ◆Laser power control

◆DC offset voltage cancellation

■Servo control block

◆Implements all servo functions (tracking, focus, sled, and spindle) in digital ◆Automatic control function: Focus gain, focus bias, focus offset, tracking

gain, tracking offset, tracking balance ◆Mechanical shock detection ◆Interruption detection

■EFM processing block

◆Error detection and correction (C1: double, C2: double)

◆Jitter margin: ±4 frames ◆DOUT output ◆Built-in text decoder

◆EFM signal sync detection, protection, and interpolation

■Audio processing block

◆Interpolation (4 sample interpolation)

◆Digital attenuator ◆Deemphasis filter

◆1-bit D/A converter (third-order ∆∑ noise shaper converter) ◆8 oversampling digital filters

◆Fadeout function ◆Bilingual function

◆Built-in second-order audio output low-pass filter

◆Supports external supply of the digital filter and D/A converter clock

■Supply voltage: 3.3 V

■ Package: QFP80 (14 14)

■MP3 (MPEG audio standard ISO/IEC 11172-3 layer 3) decoder functions

◆Decoding and output as a digital audio signal of MP3 data decoded by the CD-ROM decoder ◆Supports all bit rates including variable bit rate decoding

◆Supports the following sampling frequencies ◆MPEG1 (Fs = 32, 44.1, and 48 kHz) ◆MPEG2 (Fs = 16, 22.05, and 24 kHz) ◆MPEG2.5 (Fs = 8, 11.025, and 12 kHz)

◆Supports readout of the MPEG header information and ancillary information ◆Provides automatic muting on CRC errors using an MP3 CRC check function ◆MPEG data external serial input function supports memory card playback

■CD-ROM decoder functions

◆Support for CD-ROM mode 1 and mode 2 (form 1 and form 2)

◆CD-ROM error correction function for faithful decoding of data written to CD-ROM discs ◆Header and sector management

◆Supports up to 4 speed playback

◆In addition to data buffering also supports C2 error flag buffering ◆Can provide external serial output of the decoded CD-ROM data

■CD-DA playback functions (anti-skip support)

❋:This product is subject to change without notice for improvement. When considering the use of this product, first refer to the latest SANYO "Semiconductor News" publication related to this device and

Block Diagram		finally refer to the latest specifications for the device.
PHLPF/RFMON	MONITOR
VREF	VREF				FDO
LDD		D/A		D/A	TDO
	APC				SPDO
LDS					SLDO
LPF		AUTO		RAM	AVDD1
RF	RF SIGNAL	ADJUST	SERVO		AVSS
AIN					AVDD2
	PROCESSOR	TRACK	PROCESSEROR	RUPTURE
CIN
BIN		JUMP		DEFECR
DIN		CLA			DEFECT
FEC	FOCUS ERROR
		CAV		DRF	DRF
	PROCESSOR
		CONTROL

◆Up to 180 seconds of skip-proof operation when 64M of DRAM is used

◆Provides compressed/uncompressed selection as well as a data through output function ◆VCEC (variable speed) function supports up to 4 speed playback

■Audio signal processing

◆Serial audio signal output using the LRCK, BCK, and DATA signals

(Output supports the I2S format, 16- or 20-bit PCM output precision, 16-, 24-, and 32-bit output modes selectable for data-slot output)

◆Digital bass boost function (4 modes), attenuator function, and muting (-∞ , -12 dB) function ◆Base clock (384 Fs) output pin for external digital filters and D/A converter

■DRAM interface

◆Supports use of 1 to 64M bits of external memory (EDO, 2 CAS, 16-bit data bus memory) ◆A user area can be allocated in DRAM during CD-ROM (MP3) playback

■Supply voltages ◆Internal: 1.8 V ◆I/O: 3.3 V

◆Analog system: 3.3 V

■ Package: QFP80 (14 14)

❋:This product is subject to change without notice for improvement. When considering the use of this product, first refer to the latest SANYO "Semiconductor News" publication related to this device and

EIN	TRACKING	VPB
FIN
TEC	ERROR

Block Diagram

finally refer to the latest specifications for the device.

TE	PROCESSOR			CL
TEIN			CPU I/F	CE
JITTC				DI
	JITTER/DETECT			DO
				WRQB
SLCO	SLICE LEVEL		PORT	CONT1 to 6
EFMIN	CONTROL			OUT1
PDO1			FRAME SYNC
PDO2
	PLL		DETECT,PROTECT	FSEQ
PCKIST
VVDD			INSERT
			EFM DECODE
VVSS		ERROR		FSX
XVDD	RAM
		CORRECTION		EFLG
XVSS				C2F
XIN	CLOCK		MONITOR SIGNAL	MONI 1 to 5
XOUT		INTERPOLATION
F16MIN	GENERATOR		SELECTOR
F16MOUT		MUTE
ASLRCK	EXTERNAL	ATTENUATION	SUBCODE DECODE CRC &
ASDACK			TEXT
	AUDIO IN
ASDFIN
RVDD		8FS DIGITAL	AUDIO OUT	DOUT
		FILTER
RCHO	LPF	DEEMPHASIS		LRSY
LRVSS			SERIAL
LCHO				DATACK
		1bit DAC	OUT
LVDD				DATA
RESB				DVDD
TEST				DVDD
IOMODE				DVSS
				DVSS

		WEB OEB CASLB CASUB RASB	MADRS[12:0]	MDATA[15:0]	CL CE	CMDIN CMDOUT	INTB
	System				CPU-I/F
CKIN	Clock-gen	DRAM-I/F
VPRFR	VCO
VCOC
VPDO	+
CKOUT	PLL
WOK					Data-I/F		STREQ
		Anti-Shock					STCK
CNTOK					CDROM		STDAT
OVF		Compressed, uncompressed			Decoder		CRCF
LRSY					MP3
DATACK
					Decoder		FSYNC
DATAIN
C2FIN
SFSY
PW					M
SBSY
					U
SBCK
					X
RESB							ADLRCK
					Audio I/F
							ADBCK
							ADDATA

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