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PDF LC78632RE Data sheet ( Hoja de datos )
| Número de pieza | LC78632RE | |
| Descripción | Compact Disk Player DSP | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN*5826
CMOS LSI
LC78632RE
Compact Disk Player DSP
Preliminary
Overview
The LC78632RE is a compact disc D/A signal-processing
LSI for Video-CD players that provides a variable clock
error correction (VCEC) mode. The LC78632RE
demodulates the EFM signal from the optical pickup and
performs de-interleaving, error detection, error correction,
digital filtering, and other processing. The LC78632RE
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)
• 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: 4.5 to 5.5 V
Package Dimensions
unit: mm
3174-QFP80E
[LC78632RE]
SANYO: QFP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D3097HA (OT) No. 5826-1/9
1 page  
LC78632RE
D/A Converter Analog Characteristics at Ta = 25°C, VDD = 5 V, VSS = 0 V
Parameter
Symbol
Conditions
min typ max Unit
Total harmonic distortion
LCHP, LCHN, RCHP, RCHN; 1 kHz: 0 dB input,
THD + N using a 20-kHz low-pass filter (AD725D built in)
0.006
%
Dynamic range
LCHP, LCHN, RCHP, RCHN; 1 kHz: –60 dB input, using
DR the 20-kHz low-pass filter (A filter (AD725D built in))
90 dB
Signal-to-noise ratio
LCHP, LCHN, RCHP, RCHN; 1 kHz: 0 dB input, using
S/N the 20-kHz low-pass filter (A filter (AD725D built in))
98 100
dB
Crosstalk
LCHP, LCHN, RCHP, RCHN; 1 kHz: 0 dB input,
CT using a 20-kHz low-pass filter (AD725D built in)
96 98
dB
Note: Measured in normal-speed playback mode in a Sanyo 1-bit D/A converter block reference circuit, with the digital attenuator set to EE (hexadecimal).
Figure 1 Command Input
Figure 2 Subcode Q Output
Figure 3 Subcode Output
No. 5826-5/9
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