View UPD63710_432467.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

NEW PRODUCTS 7
INDUSTRY'S FIRST SINGLE-CHIP LSI WITH RF AMPLIFIER FOR CD PLAYER
PD63710
Introduction The compact-disc player market is now mature, in fact saturated, in the home audio and portable fields. However, this is not the case in the automobile field, where the market is expected to grow at a rate of about 10% annually. The most recent player systems are required to offer high cost performance as well as be space saving by reducing the number of components.
Masanori Ogura
Especially in the field of automobiles, a compact disc player needs to be as small as possible because it must coexist with other equipment such as a mini-disc player and an in-dash TV in a limited space. The singlechip LSI for CD, PD63710, to be introduced in this article has been developed to satisfy these requirements. The PD63710 integrates the functions necessary for a compact disc player on a
single chip, and in addition to existingproduct specifications, contains an RF amplifier and its peripheral components to enhance system integration. As a result, this LSI can reduce the number of external components, helping to create a small and cost-effective system (Fig. 1). Product Outline * Industry-first integration of digital servo
CD mechanism
Spindle motor Pickup (focus/tracking coil) Sled motor
L channel R channel
Post filter
PD63710
Signals A to F RF amplifier EFM Data processor CD-TEXT decoder TE,FE MIRR,DEFECT,RFOK Digital servo processor D/A converter
CD-TEXT interface
Microcontroller interface System control microcontroller 4-bit/8-bit PD78058, etc.
FD TD MD SD
4-channel driver
Servo D/A converter
Fig. 1 System Configuration Example of CD Player Using PD63710
Published April 1999 2nd Systems Engineering Department, Semiconductor Solution Engineering Division
PACK
ATEST TSO
RFMODE
A.GND
TEVCA
AGCO TSCK TSTB DACO TEST SD TSI FD GND EFM TD FBAL TBAL A.VDD ASY VDD MD
C2D3 C2D2 C2D1 C1D2 C1D1 GND EFM demodulator CLV processor Timing generator Digital PLL PLCK WFCK RFCK LOCK ADDER ADDER interface Auto gain control SVDRAM SVDRAM interface DEFECT comparator SVROM ROM decoder RFOK comparator Focus register Tracking register De-emphasis circuit MIRR comparator x8 oversampling digital filter Noise shaper Microcontroller interface Output buffer MULTIPLIER SVCRAM interface Switch SVCRAM Digital audio interface VDD LIMIT C16M GND TX WDCK LRCK LRCKIN D/A interface circuit SCKO SCKIN DOUT DIN Noise shaper Output buffer OSC FLAG EMPH VDD
C3T
RFI
AGCI Microcontroller interface CD-TEXT decoder Subcode processor 16K SRAM
RFO
EFM comparator
EQ2
EFM
Error correction processor
EQ1 D/A Memory processor
RFFD/TD/SD/MD control
A.GND
A
Fig. 2 Internal Block Diagram of PD63710
EFM A/D converter Output processor SI LRL+ NC A0 R+ SO NC VDD SCK RST STB FOK X.VDD XTAL XTAL X.GND DA.VDD DA.VDD DA.GND DA.GND
C
B
D
RF amplifier block
F
E
A.VDD
REFOUT
FE-
DEFECT
FEO
FOK
TE-
A3T
TEO
FEO
TE2
TEO
TEC
MIRR
A.GND
PD
LD
Comparator
PN
A.VDD
GND
MIRR
HOLD
* *
*
*
*
*
* * *
for CD, signal processor for CD, audio DAC, and RF amplifier on a single chip Supports standard-speed/double-speed play back Employs a digital loop filter for 4-channel servo control. Because the filter coefficient is programmable, various filter characteristics can be realized to accord with the CD mechanism used (sampling frequency of digital filter: 176.4 kHz). Realizes fully automatic adjustment of servo system by microcontroller. Offset/ gain/balance for both focusing and tracking can be automatically controlled by microcontroller. Includes a digital attenuation function that can set 256 steps independently for L/R channels as audio output processing. CIRC error correction function. C1: Duplex correction C2: Quadruplex correction (in CD-ROM mode) Includes a x8 oversampling digital filter and 4th-order 1-bit D/A converter for audio. Supports both current output and voltage output pickups Supply voltage: 5 V, single power source Package: 100-pin plastic LQFP (fine pitch) (14 mm x 14 mm)
Features 1. Integration of functions necessary for compact disc player on single chip The biggest feature of the PD63710 is the incorporation of the industry's first CMOS RF amplifier and its peripheral components. In addition, this LSI integrates the functions necessary for a compact disc player, such as digital servo, CD signal processor, and audio DAC, on a single chip, contributing to the creation of a small-size and cost-effective application set. 2. Employment of digital PLL circuit Because a digital PLL is employed for bit clock playback, no external component is necessary for this block. As a result, fluctuations in characteristics due to temperature changes and aging can be suppressed. 3. Flexible setting of filter coefficients The four-channel servo system employs a digital loop filter. The coefficients of each filter can be flexibly set. By this, various characteristics that match the optimum servo characteristics of the pickup to be used can be realized. In addition, offset, gain, and balance for focusing and tracking can be automatically adjusted by a microcontroller, so that the optimum servo characteristics can always be realized without being affected by variations of the pickup and disc.
4. CD-TEXT decode function The PD63710 has a CD-TEXT decode function (that also supports Mode2), which facilitates the creation of a small-size and high-performance system. Support Tools To evaluate and verify the basic functions of the PD63710 and to develop the microcontroller firmware, a PD63710 evaluation board is available. In addition, filter simulation software that sets the coefficient of the internal digital loop filter of the PD63710 to the optimum value is also available. 1. Outline of PD63710 evaluation board The PD63710 evaluation board has a microcontroller (PD78P058) for system control and the firmware already written to the memory has the following specifications: * Key input from a key matrix board or key input from a personal computer via RS232C interface can be selected. * Under the control of a personal computer, the board can be directly operated with the servo coefficients calculated with filter simulation software. * Because each servo of focus, spindle, tracking, and sled can be individually controlled in the servo evaluation mode, evaluation and verification can be
Figure 2 shows the internal block diagram of the PD63710.
PD63710 evaluation board CD mechanical board
Post filter +audio amp.
12V Battery
Driver
Power supply
PD63710
LCD-unit
LED
RS-232C DAI RS-232C
COM
Socket
Key
Simulation software
Key matrix
COM ICE
Fig. 3 Configuration of PD63710 Evaluation Board
Fig. 4 Display Example for Calculating Frequency Characteristics with PD63710 Filter Simulation Software performed with an emphasis placed on the servo characteristics of the PD63710. * In the system evaluation mode, the basic operations of a CD player, such as fastforward/rewind, random, and repeat playback, can be verified. By connecting an emulation board with an emulation probe, firmware of a microcontroller can be developed instead of using the PD78P058 (Fig. 3). 2. Outline of PD63710 filter simulation software The PD63710 filter simulation software performs the following simulation for each of the filters for focus, tracking, sled, spindle, and gain detection: * If a specific coefficient is set, the frequency characteristics of the gain and phase under the set conditions are calculated. * By setting a filter type and parameters related to the filter type, the characteristics that can be realized are approximated and coefficients are calculated. * An output wave with a sine wave input to the filter is shown above (Fig. 4). The calculated coefficients can be saved to or read from a file. Future Development NEC has successfully integrated an RF amplifier on an LSI for CD, which has been considered a difficult task. Based on this success, NEC will continue promoting the development of SOC (System-On-a-Chip).

▲Up To Search▲

Price & Availability of UPD63710

	To Download UPD63710 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .