Serial ATA
Host/Device
Bridge
AT78C5010
Summary
3480BS–NETST–8/04
Features
• Operates as Host or Device Bridge Between Serial ATA and Parallel ATA interfaces
Ultra ATA100 Mode Supported with Rates up to 100 MB/s
Data is Transferred on Both Edges of the STROBE when in Ultra DMA Mode
16-bit CRC is Calculated on a Per-burst Basis
Ultra DMA5 Compliant Drive Interfaces
Compatible with 48-bit LBA Methods of Addressing
Dual 1024-byte Transmit/Receive FIFO for Overrun Prevention
8B/10B Encoding and Decoding in Serial ATA Link Layer
Low Power: < 380 mW
Supports PIO Modes 0, 1, 2, 3 and 4
Supports UDMA Modes 0, 1, 2, 3, 4, and 5
Supports 80-conductor Cable for UDMA Modes 4, and 5
Overview
The AT78C5010 SATA Controller bridges the conventional Parallel ATA devices with
Serial ATA PHY transceivers. It includes a Serial ATA Link layer, a Transport layer, a
Command Layer, two 256 x 32 FIFOs and an IDE Host/Target Controller, a Serial ATA
Core and an IDE Controller, and is fully compliant with Serial ATA Gen1. The PHY
block is connected to the ATA block by a 20-bit transmit and a 20-bit receive data bus.
The bridge is intended to adapt an Ultra ATA100 Disk drive to a Serial ATA Host inter-
face, and a Serial ATA Device interface to Ultra ATA100 Host interface. Ultra DMA is a
data transfer protocol used with the READ DMA, WRITE DMA, READ DMA QUEUED,
WRITE DMA QUEUED, and PACKET commands.
Note: This is a summary document. A complete document
is available under NDA. For more information, please con-
tact your local Atmel sales office.