Allwinner A20 - SATA Host; Overview; SATA_AHCI Timing Diagram

A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 784 / 812
6.15. SATA Host
6.15.1. Overview
The SATA/AHCI Interface implements the Serial Advanced Technology Attachment (SATA) storage
interface for physical storage devices.
The SATA/AHCI Interface features:
 Support SATA 1.5Gb/s and SATA 3.0Gb/s
 Comply with SATA Spec. 2.6, and AHCI Revision 1.3 specifications
 Support industry-standard AMBA High-Performance Bus (AHB) and it is fully compliant with the
AMBA Specification, Revision 2.0. Supports 32-bit Little Endian
 OOB signaling detection and generation
 SATA 1.5Gb/s and SATA 3.0Gb/s speed negotiation when Tx OON signal is selected
 Support device hot-plugging
 Support power management features including automatic Partial to Slumber transition
 Internal DMA Engine for command and data transaction
 Support hardware-assisted Native Command Queuing (NCQ) up to 32 entries
 Support external SATA (eSATA)
6.15.2. SATA_AHCI Timing Diagram
Please refer to Serial ATA Specification Rev. 2.6 and Serial ATA Advanced Host Controller Interface
(AHCI) Specification Rev. 1.1.