Ampro Corporation XTX 820 manual Serial ATA, Additional Universal Serial Bus USB Ports

Chapter 3 Hardware

Serial ATA

The I/O Hub (82801FBM) provides two Serial ATA150 connections through the J2 connector. Serial ATA is an enhancement of parallel ATA, but is not limited by the traditional restrictions of parallel ATA. Serial ATA has higher performance characteristics with respect to speed and EMV. Serial ATA starts with a transfer rate of 150 Mbytes/s as compared to the legacy Parallel ATA devices that were limited to ATA133 (133MHz) or slower (33/66/100 MHz). In the future, it is hoped that SATA can be expanded up to 600 Mbytes/s to accommodate future advanced developments. Serial ATA is completely protocol and software compatible to parallel ATA.

Table 3-10. Serial ATA Interface Pin/Signal Descriptions (J2)

Pin #	Signal	Description
4	SATA0_RX+	Serial ATA Channel 0, Receive Input, Positive Differential Line
6	SATA0_RX-	Serial ATA Channel 0, Receive Input, Negative Differential Line
12	SATA0_TX+	Serial ATA Channel 0, Transmit Output, Positive Differential Line
10	SATA0_TX-	Serial ATA Channel 0, Transmit Output, Negative Differential Line
16	SATA1_RX+	Serial ATA Channel 1, Receive Input, Positive Differential Line
18	SATA1_RX-	Serial ATA Channel 1, Receive Input, Negative Differential Line
24	SATA1_TX+	Serial ATA Channel 1, Transmit Output, Positive Differential Line
22	SATA1_TX-	Serial ATA Channel 1, Transmit Output, Negative Differential Line
28	SATA2_RX+	Serial ATA Channel 2, Receive Input, Positive Differential Line
30	SATA2_RX-	Serial ATA Channel 2, Receive Input, Negative Differential Line
40	SATA2_TX+	Serial ATA Channel 2, Transmit Output, Positive Differential Line
38	SATA2_TX-	Serial ATA Channel 2, Transmit Output, Negative Differential Line
44	SATA3_RX+	Serial ATA Channel 3, Receive Input, Positive Differential Line
46	SATA3_RX-	Serial ATA Channel 3, Receive Input, Negative Differential Line
54	SATA3_TX-	Serial ATA Channel 3, Transmit Output, Negative Differential Line
56	SATA3_TX+	Serial ATA Channel 3, Transmit Output, Positive Differential Line
58	IL_SATA*	Serial ATA Interlock Switch Input
50	SATALED*	Serial ATA Activity LED

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic

Additional Universal Serial Bus (USB) Ports

The J2 connector supports two additional USB ports for a total of six USB ports for the baseboard. The features for these two additional USB ports are the same as the four USB ports on the J1 connector.

•Supports USB v2.0 and legacy v.1.1

•Supports one root hub for these two ports on (J2)

Table 3-11. USB 4 & 5 Interface Pin/Signal Descriptions (J2)

Pin #	Signal	Description
45	USBP4+	Universal Serial Bus Port 4, Positive Differential Line
47	USBP4-	Universal Serial Bus Port 4, Negative Differential Line
25	USBP5+	Universal Serial Bus Port 5, Positive Differential Line
27	USBP5-	Universal Serial Bus Port 5, Negative Differential Line

Note: The shaded area denotes power or ground.

30 Reference Manual XTX 820