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LC78620E PDF даташит

Спецификация LC78620E изготовлена ​​​​«Sanyo Semicon Device» и имеет функцию, называемую «Compact Disc Player DSP».

Детали детали

Номер произв LC78620E
Описание Compact Disc Player DSP
Производители Sanyo Semicon Device
логотип Sanyo Semicon Device логотип 

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LC78620E Даташит, Описание, Даташиты
Ordering number : EN*5130
CMOS LSI
LC78620E
Compact Disc Player DSP
Preliminary
Overview
The LC78620E is a CMOS LSI that implements the signal
processing and servo control required by compact disk
players, laser disks, CD-V, CD-I and related products. The
LC78620E provides several types of signal processing,
including demodulation of the optical pickup EFM signal,
de-interleaving, error detection and correction, and digital
filters that can help reduce the cost of CD player units. It
also processes a rich set of servo system commands sent
from the control microprocessor. It also incorporates an
EFM-PLL circuit and a one-bit D/A converter.
Functions
• Input signal processing: The LC78620E takes an HF
signal as input, digitizes (slices) that signal at a precise
level, converts that signal to an EFM signal, and
generates a PLL clock with an average frequency of
4.3218 MHz by comparing the phases of that signal and
an internal VCO.
• Precise reference clock and necessary internal timing
generation using an external 16.9344 MHz crystal
oscillator
• Disk motor speed control using a frame phase difference
signal generated from the playback clock and the
reference clock
• Frame synchronization signal detection, protection and
interpolation to assure stable data readout
• EFM signal demodulation and conversion to 8-bit
symbol data
• Subcode data separation from the EFM demodulated
signal and output of that data to an external
microprocessor
• Subcode Q signal output to a microprocessor over the
serial I/O interface after performing a CRC error check
• Demodulated EFM signal buffering in internal RAM to
handle up to ±4 frames of disk rotational jitter
• Demodulated EFM signal reordering in the prescribed
order for data unscrambling and de-interleaving
• Error detection, correction, and flag processing (error
correction scheme: dual C1 plus dual C2 correction)
• The LC78620E sets the C2 flags based on the C1 flags
and a C2 check, and then performs signal interpolation
or muting depending on the C2 flags. The interpolation
circuit uses a quadruple interpolation scheme. The
output value converges to the muting level when four or
more consecutive C2 flags occur.
• Support for command input from a control
microprocessor: commands include track jump, focus
start, disk motor start/stop, muting on/off and track
count (8 bit serial input)
• Built-in digital output circuits.
• Arbitrary track counting to support high-speed data
access
• Zero cross muting
• D/A converter outputs with data continuity improved by
8× oversampling digital filters. (These filters function as
4× oversampling filters during double-speed playback.)
• Built-in third-order ∑∆ D/A converters (PWM output)
• Built-in digital attenuator (8 bits – alpha, 239 steps)
• Built-in digital de-emphasis
• Built-in digital level and peak meter functions
• Support for bilingual applications
Features
• 80-pin QIP (miniature, reduced space package)
• Silicon gate CMOS process (for low power)
• 5 V single-voltage power supply (for use in portable
products)
Package Dimensions
unit: mm
[LC78620E]
3174-QFP80E
SANYO: QIP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
92895HA (OT) No. 5130-1/34









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LC78620E Даташит, Описание, Даташиты
Equivalent Circuit Block Diagram
LC78620E
Pin Assignment
No. 5130-2/34









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LC78620E Даташит, Описание, Даташиты
LC78620E
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Maximum input voltage
Maximum output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD max
VIN max
VOUT max
Pd max
Topr
Tstg
Conditions
Ratings
VSS – 0.3 to VSS + 7.0
VSS – 0.3 to VDD + 0.3
VSS – 0.3 to VDD + 0.3
300
–20 to +75
–40 to +125
Unit
V
V
V
mW
°C
°C
Allowable Operating Ranges at Ta = 25°C, VSS = 0 V
Parameter
Symbol
Conditions
Supply voltage
Input high level voltage
VDD
VIH (1)
VDD, XVDD, LVDD, RVDD, VVDD
DEFI, FZD, ASDACK, ASDFIN, ASDFIR, ASLRCK,
COIN, RES, HFL, TES, SBCK, RWC, CQCK, TAI,
TEST1 to TEST5, DEMO, CS
Input low level voltage
VIH (2)
VIL (1)
EFMIN
DEFI, FZD, ASDACK, ASDFIN, ASDFIR, ASLRCK,
COIN, RES, HFL, TES, SBCK, RWC, CQCK, TAI,
TEST1 to TEST5, DEMO, CS
Data setup time
Data hold time
High level clock pulse width
Low level clock pulse width
Data read access time
Command transfer time
Subcode Q read enable time
Subcode read cycle time
Subcode read enable time
Input level
Operating frequency range
VIL (2)
tset up
thold
tWøH
tWøL
tRAC
tRWC
tSQE
tsc
tse
VIN (1)
VIN (2)
fop
EFMIN
COIN, RWC: Figure 1
COIN, RWC: Figure 1
SBCK, CQCK: Figures 1, 2 and 3
SBCK, CQCK: Figures 1, 2 and 3
SQOUT, PW: Figures 2 and 3
RWC: Figure 1
WRQ: Figure 2, with no RWC signal
SFSY: Figure 3
SFSY: Figure 3
EFMIN
XIN: Input capacitor coupled
EFMIN
Crystal oscillator frequency
fX (1)
fX (2)
XIN, XOUT: In 16M mode
XIN, XOUT: In 32M mode
Note: Due to the structure of this LSI, an identical voltage must be supplied to all the power supply pins.
min
4.5
typ
max
5.5
Unit
V
0.7 VDD
0.6 VDD
0
0
400
400
400
400
0
1000
400
1.0
1.0
11.2
136
16.9344
33.8688
VDD
VDD
0.3 VDD
0.4 VDD
400
10
V
V
V
V
ns
ns
ns
ns
ns
ns
ms
µs
ns
Vp-p
Vp-p
MHz
MHz
MHz
Electrical Characteristics at Ta = 25°C, VDD = 5 V, VSS = 0 V
Parameter
Current drain
Input high level current
Input low level current
Output high level voltage
Symbol
IDD
IIH (1)
IIH (2)
IIL
VOH (1)
VOH (2)
VOH (3)
VOH (4)
VOH (5)
Conditions
DEFI, EFMIN, FZD, ASDACK, ASDFIN, ASDFIR,
ASLRCK, COIN, RES, HFL, TES, SBCK, RWC,
CQCK: VIN = 5 V
TAI, TEST1 to TEST5, DEMO, CS: VIN = VDD = 5.5 V
DEFI, EFMIN, FZD, ASDACK, ASDFIN, ASDFIR,
ASLRCK, COIN, RES, HFL, TES, SBCK, RWC,
CQCK, TAI, TEST1 to TEST5, DEMO, CS: VIN = 0 V
EFMO, EFMO, CLV+, CLV, V/P, FOCS, PCK, FSEQ,
TOFF, TGL, THLD, JP+, JP, EMPH, EFLG, FSX:
IOH = –1 mA
MUTEL, MUTER, LRCKO, DFORO, DFOLO, DACKO,
TST10, LRSY, CK2, ROMXA, C2F, SBSY, PW, SFSY,
WRQ, SQOUT, TST11, 16M, 4.2M, CONT:
IOH = –0.5 mA
LASER: IOH = –1 mA
DOUT: IOH = –12 mA
LCHP, RCHP, LCHN, RCHN: IOH = –1mA
min
25
–5
4
4
4.6
4.5
3.0
typ max Unit
30 45 mA
5 µA
75 µA
µA
V
V
V
V
4.5 V
Continued on next page.
No. 5130-3/34










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Номер в каталогеОписаниеПроизводители
LC78620ECompact Disc Player DSPSanyo Semicon Device
Sanyo Semicon Device

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