AT78C1501

• Host Interface ATAPI Compatible (ANSI ATA-1, ATA-2, ATA-3 and ATA-4 compliant) Host Mode Ultra DMA Support (66 MB/sec) High-current (12 mA) Drivers for Direct Connection to AT Cable (slew ratecontrolled) 256-byte Bidirectional Data FIFO to Improve Throughput
• Embedded Processor ARM7TDMI™ RISC Processor Open Processor Architecture Protects Firmware Investment Wide Selection of Development Tools from ARM® and Third-party Vendors 1-Mbyte External Flash Interface for Code/Data 16-Kbyte Internal SRAM for Data
• Buffer Manager Supports SDRAM up to 32 Mbytes (16M x 16) DRAM Bandwidth of up to 160 Mbytes/sec (burst) Priority Buffer Arbiter
• Read Channel Interface Nibble Interface Speed (code cell rate): 40 MHz (160 Mbs, DVD 5X) EFM (8/14) and EFM+ (8/16) Demodulation
• Write Channel Interface Serial Interface Speed (code cell rate): DVD 2X EFM (8/14) and EFM+ (8/16) Modulation DVD-R Pre-pit Decoder with Error Detection and Correction DVD+RW ADIP Decoder with Error Detection and Correction CD-R/RW ATIP Decoder with Error Detection
• Error Correction Logic DVD Data Block Error Detection and Correction DVD EDC Error Detection DVD IEC Header Error Detection and Correction All CD Formats
• Lower Power Operation with 3.3V Core and 5V Tolerant I/Os

The Atmel AT78C1501 is a high-performance DVD/CD ATAPI Ultra DMA66 InterfaceController, designed to interface to the AT78C1502 DVD Servo Controller, theAT78C1503 DVD Read Channel and the AT78C1504 Automatic Laser Power Control(ALPC). The interface controller (AT78C 1501) contains ARM® and AVR® microcontrollers, buffer management, error correction code (ECC) and encoder/decoder (ENDEC)for DVD and CD. Also included are a writeable control store for timing generation andan on-board frequency synthesizer to generate system frequencies from one crystal.

ATA66/ATAPI66 and I2S interfaces are provided.The major functions of the AT78C1501 include data format encoding/decoding, errordetection/correction, buffer management, ATAPI host interface and serial interfacemaster. The AT78C 1501 also includes an embedded ARM7 RISC Core to perform allsystem (drive) microprocessor functions and an embedded AVR RISC core to performinternal data path and buffer management control.

The AT78C1501 disk formats include DVD-ROM, DVD-RAM (Read/Write), CD-ROM,CD-R (Read/Write), CD-RW (Read/Write), DVD-R (Read/Write), DVD-RW(Read/Write), and DVD+RW (Read/Write).