UPD63710 NEC [NEC], UPD63710 Datasheet - Page 3

• Manufacturer Part Number: UPD63710
• Manufacturer: NEC [NEC]

• Supports standard-speed/double-speed
• Employs a digital loop filter for 4-channel
• Realizes fully automatic adjustment of
• Includes a digital attenuation function that
• CIRC error correction function.
• Includes a x8 oversampling digital filter
• Supports both current output and voltage
• Supply voltage: 5 V, single power source
• Package: 100-pin plastic LQFP (fine pitch)
of the PD63710.
for CD, signal processor for CD, audio
DAC, and RF amplifier on a single chip
play back
servo control.
coefficient is programmable, various filter
characteristics can be realized to accord
with the CD mechanism used (sampling
frequency of digital filter: 176.4 kHz).
servo system by microcontroller. Offset/
gain/balance for both focusing and
tracking can be automatically controlled
by microcontroller.
can set 256 steps independently for L/R
channels as audio output processing.
C1: Duplex correction
C2: Quadruplex correction (in CD-ROM
mode)
and 4th-order
audio.
output pickups
(14 mm x 14 mm)
Figure 2 shows the internal block diagram
1-bit D/A converter for
CD mechanical board
Because the filter
Features
1. Integration of functions necessary for
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
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
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.
The biggest feature of the PD63710 is
Because a digital PLL is employed for bit
The four-channel servo system employs a
compact disc player on single chip
DAI
Driver
PD63710 evaluation board
Simulation
software
PD63710
RS-232C
Fig. 3 Configuration of PD63710 Evaluation Board
RS-232C
Post filter
+audio amp.
LCD-unit
Key
matrix
Key
4. CD-TEXT decode function
function (that also supports Mode2), which
facilitates the creation of a small-size and
high-performance system.
Support Tools
of 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
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
• Under the control of a personal computer,
• Because each servo of focus, spindle,
COM
The PD63710 has a CD-TEXT decode
To evaluate and verify the basic functions
The PD63710 evaluation board has a
input from a personal computer via RS-
232C interface can be selected.
the board can be directly operated with the
servo coefficients calculated with filter
simulation software.
tracking, and sled can be individually
controlled in the servo evaluation mode,
evaluation and verification can be
PD63710 and to develop the
Power
supply
Socket
12V
Battery
ICE
LED
COM