SATA 转 IDE，SATA 转其它接口的接线图及电气说明In computer hardware, Serial ATA (SATA, is a computer bus technology primarily designed for transfer of data to and from a hard disk. It is the successor to the legacy Advanced Technology Attachment standard (ATA, also known as IDE). This older technology was retroactively renamed Parallel ATA (PATA) to distinguish it from Serial ATA.The Serial ATA SATA bus is defined over two separate connectors, one connector for the data lines and one for the power lines. A Serial ATA Hard drive may also have a third connector for legacy PATA power connections. The PATA power connector may be used in instead of the SATA power to supply a connection which is more rugged and reliable then the SATA-1 power connection.The Serial ATA interface SATA is the serial version of the IDE ATA spec. SATA uses a 4 conductor cable with two differential pairs Tx/Rx, plus an additional 3 grounds pins and a separate power connector. Data runs at 150MBps 1.5GHz using 8B/10B encoding and 250mV signal swings, with a maximum bus length of 1 meter. SATA enhancements move the data transfer speed to; 300MBps 3.0Gbps, and then 600MBps 6.0Gbps. The current speed for SATA is 300Mbps 3Gbps. Shielded external SATA eSATA data cable runs out to a maximum of between 3 feet and 6 feet. eSATA cables are used external to the chassis or case.SATA Data pinoutSATA PinOut, DataPin # Signal Name Signal Description1 GND Ground2 A+ Transmit +3 A- Transmit -4 GND Ground5 B- Receive -6 B+ Receive +7 GND GroundSATA Power pinoutSATA PinOut, PowerPin # Signal Name Signal Description1 V33 3.3v Power2 V33 3.3v Power3 V33 3.3v Power, Pre-charge, 2nd mate4 Ground 1st Mate5 Ground 2nd Mate6 Ground 3rd Mate7 V5 5v Power, pre-charge, 2nd mate8 V5 5v Power9 V5 5v Power10 Ground 2nd Mate11 Reserved -12 Ground 1st Mate13 V12 12v Power, Pre-charge, 2nd mate14 V12 12v Power15 V12 12v PowerPATA Power pinoutIDE Power Connector Pin OutPin # Signal Function 18 AWG Wire1 +12V DC Yellow2 +12V Return Black3 +5V Return Black4 +5V DC RedSATA signal names are with respect to the Host, the device connected to the host reverses the signal names. Transmit pins connect to Receive pins on the other device. The SATA connector is keyed at pin 1. These pin outs for the Serial ATA connector are not compatible with the legacy PATA connector.The following article is licensed under the GNU Free Documentation License. It reproduces the Wikipedia article Serial ATASATA 1.5 Gb/sFirst-generation Serial ATA interfaces, also known as SATA/150, run at 1.5 Gigahertz (GHz). Serial ATA uses 8B/10B encoding at the physical layer. This encoding scheme has an efficiency of 80%, resulting in an actual data transfer rate of 1.2 Gigabits per second (Gb/s), or 150 megabytes per second (MB/s). The relative simplicity of a serial link and the use of LVDS allow both the use of longer drive cables and an easier transition path to higher speeds.SATA 3.0 Gb/sSoon after SATAs introduction, enhancements were made to the standard. A 3Gb/s signalling rate was added to the PHY layer, offering up to twice the data throughput. To ensure seamless backward compatibility between older SATA and the newer faster SATA/3Gbs devices, the latter devices are required to support the original 1.5Gb/s rate. In practice, some older SATA systems that do not support SATA speed negotiation require the peripheral drives speed be manually hardlimited to 150 MB/s with the use of a jumper for a 300 MB/s drive.Like SATA 1.5Gb/s, SATA 3Gb/s uses 8B/10B encoding resulting in an actual data transfer rate of 2.4 Gb/s, or 300 MB/s.The 3.0 Gb/s specification has been very widely referred to as “Serial ATA II” (“SATA II”), contrary to the wishes of the Serial ATA standards organization that authored it. The official website notes that SATA II was in fact that organizations name at the time, the SATA 3Gb/s specification being only one of many that the former SATA II defined, and suggests that “SATA 3Gb/s” be used instead. (The Serial ATA standards organization has since changed names, and is now “The Serial ATA International Organization”, abbreviated SATA-IO.)SATA-IO plans to further increase the maximum throughput of Serial ATA to 600 MB/s around the year 2007.SATA 3Gb/s is sometimes also referred to as SATA/300 or SATA II, continuing the line of PATA/100, PATA/133 and SATA/150.SATA 6.0 Gb/sSATA-IO plans to make a 6.0 Gb/s standard. Although the theoretical thoroughput would be doubled, conventional hard disks cant approach saturating this speed.Serial ATA innovationsSATA drops the master/slave shared bus of PATA, giving each device a dedicated cable and dedicated bandwidth. While this requires twice the number of host controllers to support the same number of SATA devices, at the time of SATAs introduction this was no longer a significant drawback. Another controller could be added into a controller ASIC at little cost beyond the addition of the extra seven signal lines and printed circui