Specifications
| Host Ports |
2 |
| Drive Ports |
1 |
| Pwr Sup |
1.2V |
| DataRate(s) |
1.5/3.0 Gbs |
| Pkgs |
LQFP-100, QFN-64 |
Description
The XRS10L210 is a Serial ATA II Port Selector at 3.0 Gbps and 1.5 Gbps. It provides the capability to provide a failover path from two independent hosts to a single SATA drive and offers a leading solution for propagation of high data rate Serial ATA products in a wide variety of applications. The integration of Serial ATA PHY links, a variety of digital logic capabilities, rate adjust FIFOs, integrated low-cost clock oscillator support, test and loopback features is achieved in a low cost and lower power implementation.
The port selector function is used when dual hosts, such as I/O controllers, must access single-port disk drives in high availability storage subsystems where redundancy and load sharing are important. Active/passive port selector in XRS10L210 allows two different host ports to connect to the same target in order to create a redundant path to that target. In combination with RAID, the XRS10L210 allows system providers to build fully redundant solutions. This avoids the presence of a single point of failure, and enables a fail-over path in the case of host failure.
The XRS10L210 includes enhanced features such as staggered HDD spin-up, power management control, hot plug capability and support for legacy software. The XRS10L210 acts as a retimer, maintaining independent signaling domains between the drives, hosts and the external interconnect. The high-speed serial input features selectable equalization adjustment and the high-speed serial output features selectable pre-emphasis to compensate for ISI (Inter-Symbol Interference) and increase maximum cable distances.
XRS10L210 meets tight jitter budgets in SATA applications. Exar's serial I/O technology enables reliable data transmission over 1 meter or more of FR-4 and 15 meters or more of unequalized copper cable.
Host and drive port speeds can be mixed and matched, based upon inherent data rate negotiation present in the SATA II specifications.
The MDIO bus allows simple configuration of the XRS10L210.
Standards Compliance
The XRS10L210 is compliant with the following industry specifications:
- Serial ATA, Revision 1.0a
- Serial ATA II: Extensions to Serial ATA 1.0a, Revision 1.2
- Serial ATA II PHY Electrical Specifications, Revision 1.0
- Serial ATA II: Port Selector, Revision 1.0
XRS10L210 Data Sheet
