HBA Specifications

A P P E N D I X B

HBA Specifications

This appendix provides information about the HBA specifications. The appendix contains the following sections:

Physical Dimensions

Environmental Specifications

DC Power Requirements

Current Requirements

Performance Specifications

Connector Pin Definitions

Physical Dimensions

Meets PCI low-profile MD2 specification.

Height: 67 mm

Length: 167 mm

Environmental Specifications

Note - With a Battery Backup Unit (BBU), the ambient temperature must not exceed 40 ˚C.

TABLE B-1 Environmental Specifications
Ambient temperature without forced airflow	0 ˚C to 40 ˚ C
Ambient temperature with forced airflow	0 ˚C to 55 ˚ C
Relative humidity	10% to 90%, noncondensing
Altitude	Up to 3,000 meters

Note - Forced airflow is recommended.

DC Power Requirements

PCI Express, DC Voltage 3.3 V ± 9%, 12 V ± 8%

Current Requirements

1.0 A @ 3.3 VDC; 1.0 A @ 12.0 VDC

Performance Specifications

The Serial Attached SCSI [SAS] bus defines these layers:

Physical layer: Consists of two sets of differential lines, one receive set and one transmit set [4-wire total]. This layer defines the cable, connector, and transceiver [Transmitter / Receiver] characteristics.

PHY layer: Connects the differential Transmitter and Receiver circuits [ICs] to the Physical Layer.

Link layer

Port layer

Application layer

The external connector accepts 4 physical links and the cable may hold between 1 and 4 physical links. Internal connectors are defined and two data rates are defined: 1.5 Gbps and 3.0 Gbps over a 100 ohm [+ 15 ohm] differential impedance cable.

SAS uses the Serial ATA physical interface, including the connector receptacle and connector plugs. SAS transmits data using 8B/10B at a maximum level of 1.2 volts [Tx voltage = 800-1600mV], [Rx voltage = 275-1600mV]. SAS uses big-endian, while SATA uses little-endian byte ordering. SAS uses a 32 bit CRC. SAS uses LVDS.

Connector Pin Definitions

SAS Pin-Out

Two types of ports are defined: A Narrow Port communicates over a narrow link and contains only one transmit/receive pair, and a Wide Port communicates over a wide link and contains more than one transmit/receive pair. The ports reside in the PHY layer, and the link resides in the physical layer.

TABLE B-2 SAS Pin-Out
Signal Name	1 Physical Link	2 Physical Links	3 Physical Links	4 Physical Links
Rx 0+	S1	S1	S1	S1
Rx 0-	S2	S2	S2	S2
Rx 1+	N/A	S3	S3	S3
Rx 1-	N/A	S4	S4	S4
Rx 2+	N/A	N/A	S5	S5
Rx 2-	N/A	N/A	S6	S6
Rx 3+	N/A	N/A	N/A	S7
Rx 3-	N/A	N/A	N/A	S8
Tx 3-	N/A	N/A	N/A	S9
Tx 3+	N/A	N/A	N/A	S10
Tx 2-	N/A	N/A	S11	S11
Tx 2+	N/A	N/A	S12	S12
Tx 1-	N/A	S13	S13	S13
Tx 1+	N/A	S14	S14	S14
Tx 0-	S15	S15	S15	S15
Tx 0+	S16	S16	S16	S16
Signal Ground	G1 - G9	G1 - G9	G1 - G9	G1 - G9
Chassis Ground	Housing	Housing	Housing	Housing

SATA Pin-Out

The Serial ATA [SATA] bus is defined over two separate connectors, one connector for the data lines and one for the power lines. A SATA 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.

TABLE B-3 SATA Data Pin-Out
Pin #	Signal Name	Signal Description
1	GND	Ground
2	A+	Transmit +
3	A-	Transmit -
4	GND	Ground
5	B-	Receive -
6	B+	Receive +
7	GND	Ground

TABLE B-4 SATA Power Pin-Out
Pin#	Signal Name	Signal Description
1	V33	3.3v Power
2	V33	3.3v Power
3	V33	3.3v Power, Pre-charge, 2nd mate
4	Ground	1st Mate
5	Ground	2nd Mate
6	Ground	3rd Mate
7	V5	5v Power, pre-charge, 2nd mate
8	V5	5v Power
9	V5	5v Power
10	Ground	2nd Mate
11	Reserved	-
12	Ground	1st Mate
13	V12	12v Power, Pre-charge, 2nd mate
14	V12	12v Power
15	V12	12v Power