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LC78604E 데이터시트 PDF




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부품번호 LC78604E 기능
기능 Compact Disc Player DSP
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LC78604E 데이터시트, 핀배열, 회로
Ordering number : ENN7734
SANYO Semiconductors
DATA SHEET
CMOS IC
LC78604E Compact Disc Player DSP with
Built-in Microcontroller
Overview
The LC78604E CMOS IC implements the signal processing, servo control, LED display, button state acquisition, and
remote controller handling required by compact disc players without requiring a separate microcontroller. It provides
the following basic functions: demodulation of the EFM signal from the optical pickup, deinterleaving, error detection
and correction, 8× oversampling audio filters, D/A converter (with built-in analog low-pass filter), LED display drivers,
key acquisition (A/D) and control processing, and automatic discrimination and playback of CD-RW discs. Thus the
LC78604E is ideal for implementing low-end CD players that support playback of CD-RW discs.
The LC78604E also provides a radio tuner frequency display function, and allows digital display of the selected
frequency in manual tuning CD radio/cassette players.
Functions
• Implements the CD play/pause, stop, track selection, fast forward/fast rewind, repeat 1/repeat all, program
setup/play/clear for up to 30 tracks, and shuffle play functions controlled from CD player buttons.
<Signal-Processing Block>
• The signal-processing block applies slicing at the correct level to the input HF signal, and converts that signal to an
EFM signal. At the same time it generates a PLL clock signal with an average frequency of 4.3218MHz by
comparing the phase with that of the internal VCO.
• A reference clock signal and all necessary timings can be generated using an external 16.9344MHz crystal.
• The disc motor speed is controlled by a frame phase difference signal created from the playback clock and the
reference clock.
• Performs frame sync signal detection, protection, and interpolation to assure stable data readout.
• Demodulates the EFM signal and converts the result to 8-bit symbol data.
• Separates the subcode data from the EFM signal and outputs that data to the internal control processing block.
• After applying a CRC check to the subcode Q data, outputs that data to the internal control processing block.
• Buffers the demodulated EFM signal in internal RAM and compensates for up to ±4 frames of jitter due to
fluctuations in the disc speed.
• Applies unscrambling and deinterleaving to the demodulated EFM signal in the stipulated order.
• Performs error detection, correction, and flag processing (C1: double, C2: double).
• Sets the C2 flags according to the C1 flags and the C2 check and applies interpolation and previous value hold
processing to the output signal according to the C2 flags. This interpolation circuit implements 2-value
interpolation. A previous value hold operation is applied if the C2 flags indicate errors for over 2 consecutive
samples.
• The internal control processing block controls the track jump, focus start, disc motor start/stop, muting on/off, track
count, and other operations.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
32504TN (OT) No.7734-1/11




LC78604E pdf, 반도체, 판매, 대치품
LC78604E
1-Bit D/A Converter Block Analog Characteristics at Ta=25°C, VDD=3.3V, VSS=0V
Parameter
Total harmonic distortion
Dynamic range
Signal-to-noise ratio
Crosstalk
Symbol
THD+N
DR
S/N
CT
Pin name
LCHO, RCHO
LCHO, RCHO
LCHO, RCHO
LCHO, RCHO
Conditions
With a 1kHz, 0dB signal input
With the 20kHz low-pass filter
(built into the AD725D) used
With a 1kHz, –60dB signal input
With the 20kHz low-pass and A
filters (built into the AD725D) used
With a 1kHz, 0dB signal input
With the 20kHz low-pass and A
filters (built into the AD725D) used
With a 1kHz, 0dB signal input
With the 20kHz low-pass filter
(built into the AD725D) used
Ratings
min typ
0.025
85 87
88 90
80 82
* : Measured in normal playback mode in the Sanyo 1-bit D/A converter reference circuit.
max
0.04
Unit
%
dB
dB
dB
1-bit D/A converter output block reference circuit
LC78604
LRVDD
LCHO(RCHO)
4.7µF 2.2k
LRVSS
XIN XOUT
1500pF
LPF
Shibasoku Co., Ltd.
100kAD725D
Oscillator element: 16.9344MHz
The following oscillator elements are recommended :
CSTLS16M9X53-B0 (built-in capacitor) (Murata Mfg. Co., Ltd.)
Oscillator
CSTCE16M9V53-R0 (built-in capacitor) (Murata Mfg. Co., Ltd.)
element
C X’tal C
Analog output
LCH (RCH)
No.7734-4/11

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LC78604E 전자부품, 판매, 대치품
LC78604E
Pin Functions
Pin No. Pin Name
1 EFMI
2 DRF
3 DEFI
4 CLK
5 RWB
6 RWC
7 COIN
8 CQCKB
9 FSEQ
10 CLVO
11 HFL
12 JPO
13 TES
14 TOFF
15 TGL
16 DVSS
17 DVDD
18 SL+
19 SL–
20 DMUTEB
21 AMUTEB
22 MODE
23 LCHO
24 LRVDD
25 LRVSS
26 RCHO
27 XVSS
28 XOUT16M
29 XIN16M
30 XVDD
31 XOUT32K
32 XIN32K
33 DIG4
34 DIG3
35 DIG2
36 DIG1
37 SEG1
38 SEG2
39 SEG3
40 SEG4
41 SEG5
42 SEG6
43 SEG7
I/O Function
I EFM signal input
I DRF signal input
Defect detection signal (DEF) input
I
(Must be connected to ground if unused.)
O ASP system clock output (132.3kHz [16.9344MHz/128])
RW support control signal
O Low-level output: Indicates that a CD-RW disc is being played
High-level output: Indicates that a CD-DA/R disc is being played
O Command write control signal output
O Command data signal output
O Command data transfer clock signal output
Sync signal detection output monitor
O A high level is output when the sync signal detected from the EFM signal
matches the internally generated sync signal.
Spindle motor control signal output
Low-level output: Decelerate
O
High-level output: Accelerate
High-impedance output: Neither accelerate nor decelerate
I Track detection signal input (Schmitt trigger input)
Track jump control signal output
Low-level output: When moving away from the center: decelerate
When moving towards the center: accelerate
O
High-level output: When moving away from the center: accelerate
When moving towards the center: decelerate
High-impedance output: Neither accelerate nor decelerate
I Tracking error signal input (Schmitt trigger input)
Tracking off signal output
O Low-level output: Tracking on
High-level output: Tracking off
Tracking gain switching signal output
O
Low-level output: Gain increase
— Digital system ground. This pin must be connected to the 0V level.
— Digital system power supply
O
Sled feed signal outputs
O
Driver muting control signal output
O
Low-level output: When the driver is muted
Audio muting control signal output
O
Low in audio mute mode
Operating mode selection
I
This pin must be connected to the 0V level.
O D/A converter left channel signal output
— D/A converter power supply
— D/A converter ground. This pin must be connected to the 0V level.
O D/A converter right channel signal output
— Digital system ground. This pin must be connected to the 0V level.
O Connections for a 16.9344MHz crystal oscillator element.
I (Oscillation is stopped when TUNERESP is high.)
— Digital system power supply
O Connections for a 32.768kHz crystal oscillator element.
I (Oscillation is stopped when CDRESB is high.)
O Digital output (4)
O Digital output (3)
O Digital output (2)
O Digital output (1)
O Segment output (1)
O Segment output (2)
O Segment output (3)
O Segment output (4)
O Segment output (5)
O Segment output (6)
O Segment output (7)
Pin state when
CDRESB is low
Clock output
Pin state when
TUNERESB is low
Undefined
Low-level output
Undefined
Low-level output
High-level output
High-level output
Undefined
Undefined
Undefined
Low-level output
Undefined
High-impedance
output
Undefined
High-impedance
output
Undefined
High-impedance
output
Undefined
Undefined
Low-level output
Low-level output
Low-level output
Undefined
Undefined
Undefined
Undefined
Low-level output
Undefined
——
Undefined
Undefined
——
——
Undefined
Undefined
——
Clock output
Undefined
——
——
Undefined
Clock output
——
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
High-level output High-level output
Continued on next page.
No.7734-7/11

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관련 데이터시트

부품번호상세설명 및 기능제조사
LC78604E

Compact Disc Player DSP

Sanyo Semicon Device
Sanyo Semicon Device

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