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LC78631 PDF даташит

Спецификация LC78631 изготовлена ​​​​«Sanyo Semicon Device» и имеет функцию, называемую «Compact Disk Player DSP».

Детали детали

Номер произв LC78631
Описание Compact Disk Player DSP
Производители Sanyo Semicon Device
логотип Sanyo Semicon Device логотип 

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LC78631 Даташит, Описание, Даташиты
Ordering number : EN 5342
CMOS LSI
LC78631E
Compact Disk Player DSP
Overview
The LC78631E is a compact disc D/A signal-processing
LSI for CD-ROM drives that provides a variable clock
error correction (VCEC) mode. The LC78631E
demodulates the EFM signal from the optical pickup and
performs de-interleaving, error detection, error correction,
digital filtering, and other processing. The LC78631E
includes an on-chip 1-bit D/A converter, and executes
commands sent from a control microprocessor.
Features
• VCEC support
• Built-in PLL circuit for EFM detection (supports 4×
playback)
• Built-in PLL for variable pitch playback (±13%)
• 18KB RAM on chip
• Error detection and correction (corrects two errors in C1
and four errors in C2)
• Frame jitter margin: ±8 frames
• Frame synchronization signal detection, protection, and
insertion
• Dual interpolation adopted in the interpolation circuit.
• EFM data demodulation
• Subcode demodulation
• Zero-cross muting adopted
• Servo command interface
• 2fs digital filter
• Digital de-emphasis
• Built-in independent left- and right-channel digital
attenuators (239 attenuation steps)
• Supports the bilingual function
• Left/right swap function
• Built-in 1-bit D/A converter (third-order ∆∑ noise
shaper, PWM output)
• Built-in digital output circuit
• CLV servo
• Arbitrary track jumping (of up to 255 tracks)
• Variable sled voltage (four levels)
• Six extended I/O ports and 2 extended output ports
• Built-in oscillator circuit using an external 16.9344 MHz
or 33.8688 MHz (for 4× playback) element
• Supply voltage: 3.6 to 5.5 V (4.75 to 5.5 V for 4×
playback mode)
Package Dimensions
unit: mm
3174-QFP80E
[LC78631E]
SANYO: QFP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
62096HA (OT) No. 5342-1/34









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LC78631 Даташит, Описание, Даташиты
Equivalent Circuit Block Diagram
LC78631E
No. 5342-2/34









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LC78631 Даташит, Описание, Даташиты
Pin Assignment
LC78631E
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Input voltage
Output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD max
VIN
VOUT
Pd max
Topr
Tstg
Conditions
Ratings
–0.3 to +7.0
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
470
–30 to +75
–40 to +125
Unit
V
V
V
mW
°C
°C
Allowable Operating Ranges at Ta = 25°C, VSS = 0 V
Parameter
Supply voltage
Input high-level voltage
Input low-level voltage
Data setup time
Data hold time
Symbol
VDD1
VDD2
VDD3
VIH1
VIH2
VIL1
VIL2
tSU
tPRS
tHD
Conditions
VDD, AVDD, XVDD, LVDD, RVDD
VDD, AVDD, XVDD, LVDD, RVDD:
For variable-pitch playback
VDD, AVDD, XVDD, LVDD, RVDD: For 4× playback
TEST1 to TEST5, TAI, HFL, TES, P0/DFCK, P1/DFIN,
P2, P3/DFLR, P4, P5, SBCK, RWC, COIN, CQCK,
RES, CS, XIN, DEFI
EFMI
TEST1 to TEST5, TAI, HFL, TES, P0/DFCK, P1/DFIN,
P2, P3/DFLR, P4, P5, SBCK, RWC, COIN, CQCK
RES, CS, XIN, DEFI
EFMI
COIN, RWC: Figures 1 and 4
RWC: Figure 4
COIN, RWC: Figures 1 and 4
min
3.6
4.5
4.75
0.7 VDD
0.6 VDD
0
0
400
100
400
typ max Unit
5.0 5.5 V
5.0 5.5 V
5.0 5.5 V
VDD
V
VDD
V
0.3 VDD
V
0.4 VDD
V
ns
ns
ns
Continued on next page.
No. 5342-3/34










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