LC78630E

Ordering number : EN 5121B CMOS LSI LC78630E Compact Disk Player DSP Overview The LC78630E is a CD-DA signal-processing LSI for use in video CD player systems. The LC78630E incorporates signal-processing circuits for demodulating and deinterleaving the EFM signal from the optical pickup, error detection and correction, and digital filtering. It also includes a 1-bit D/A converter and executes commands sent from a system control microprocessor. Package Dimensions unit: mm 3174-QFP80E [LC78630E] Features Built-in PLL for EFM signal synchronization (a hybrid analog-digital PLL that 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) 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) Built-in oscillator circuit using an external 16.9344 MHz or 33.8688 MHz (for 4× playback) element Sup...