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AT78C1501 Datasheet

  • AT78C1501

  • AT78C1501 [Updated 7/02. 15 Pages] DVD Interface Controller ...

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Features
鈥?/div>
Host Interface
鈥?ATAPI Compatible (ANSI ATA-1, ATA-2, ATA-3 and ATA-4 compliant) Host Mode
鈥?Ultra DMA Support (66 MB/sec)
鈥?High-current (12 mA) Drivers for Direct Connection to AT Cable (slew rate
controlled)
鈥?256-byte Bidirectional Data FIFO to Improve Throughput
Embedded Processor
鈥?ARM7TDMI
鈩?/div>
RISC Processor
鈥?Open Processor Architecture Protects Firmware Investment
鈥?Wide Selection of Development Tools from ARM
廬
and Third-party Vendors
鈥?1-Mbyte External Flash Interface for Code/Data
鈥?16-Kbyte Internal SRAM for Data
Buffer Manager
鈥?Supports SDRAM up to 32 Mbytes (16M x 16)
鈥?DRAM Bandwidth of up to 160 Mbytes/sec (burst)
鈥?Priority Buffer Arbiter
Read Channel Interface
鈥?Nibble Interface Speed (code cell rate): 40 MHz (160 Mbs, DVD 5X)
鈥?EFM (8/14) and EFM+ (8/16) Demodulation
Write Channel Interface
鈥?Serial Interface Speed (code cell rate): DVD 2X
鈥?EFM (8/14) and EFM+ (8/16) Modulation
鈥?DVD-R Pre-pit Decoder with Error Detection and Correction
鈥?DVD+RW ADIP Decoder with Error Detection and Correction
鈥?CD-R/RW ATIP Decoder with Error Detection
Error Correction Logic
鈥?DVD Data Block Error Detection and Correction
鈥?DVD EDC Error Detection
鈥?DVD IEC Header Error Detection and Correction
鈥?All CD Formats
Lower Power Operation with 3.3V Core and 5V Tolerant I/Os
鈥?/div>
鈥?/div>
DVD/CD ATAPI
Controller
AT78C1501
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Description
The Atmel AT78C1501 is a high-performance DVD/CD ATAPI Ultra DMA66 Interface
Controller, designed to interface to the AT78C1502 DVD Servo Controller, the
AT78C1503 DVD Read Channel and the AT78C1504 Automatic Laser Power Control
(ALPC). The interface controller (AT78C1501) contains ARM
廬
and AVR
廬
microcontrol-
lers, buffer management, error correction code (ECC) and encoder/decoder (ENDEC)
for DVD and CD. Also included are a writeable control store for timing generation and
an 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, error
detection/correction, buffer management, ATAPI host interface and serial interface
master. The AT78C1501 also includes an embedded ARM7 RISC Core to perform all
system (drive) microprocessor functions and an embedded AVR RISC core to perform
internal data path and buffer management control.
The AT78C1501 disk formats include DVD-ROM, DVD-RAM (Read/Write), CD-ROM,
CD -R (R ea d/W rite), C D-RW (R ea d/W rite) , DVD- R (R ead /Wr ite), DVD-RW
(Read/Write), and DVD+RW (Read/Write).
Rev. 2049A鈥揇VD鈥?7/02
1

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