Compact Disc Player DSP with Built-in HDCD Decoder The LC78628E is a digital signal processor (DSP) chip manufactured by SANYO. Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** SANYO
- **Type:** Digital Signal Processor (DSP)
- **Package:** Likely a surface-mount or DIP package (exact package type may vary)
- **Power Supply Voltage:** Typically operates at **5V** (exact range may vary)
- **Operating Temperature Range:** Standard commercial/industrial range (e.g., **0°C to 70°C** or **-40°C to 85°C** depending on variant)
- **Clock Frequency:** Supports high-speed digital signal processing (exact frequency depends on application)
- **Pin Count:** Likely **80-pin** or similar (exact pin configuration may vary)
### **Descriptions:**
- The **LC78628E** is a DSP chip designed for digital audio processing, commonly used in CD players, CD-ROM drives, and other digital audio applications.
- It performs functions such as **EFM (Eight-to-Fourteen Modulation) demodulation, error correction (CIRC), and digital filtering** for high-quality audio playback.
- The chip interfaces with other components like servo controllers, DACs (Digital-to-Analog Converters), and microcontrollers in optical disc systems.
### **Features:**
- **EFM Demodulation:** Decodes the 8-to-14 modulated signal from CD discs.
- **Error Correction (CIRC):** Implements Cross-Interleaved Reed-Solomon Code for data accuracy.
- **Digital Filtering:** Includes built-in digital filters for noise reduction and signal smoothing.
- **Serial Data Interface:** Supports communication with DACs and other digital audio components.
- **Low Power Consumption:** Optimized for efficient operation in consumer electronics.
- **On-Chip RAM/ROM:** May include internal memory for buffering and processing data.
This information is based on the general characteristics of SANYO's LC78628E DSP chip as used in digital audio applications. For exact datasheet details, refer to official SANYO documentation.
