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Chapter 9
Port Multipliers and Selectors
Objectives
This chapter will cover details concerning hardware that provides device connectivity and high avail-
ability to SATA system designs. SATA has limited connectivity and availability:
Point-to-point serial links
○ Only allow for a single host to device connection
Single-ported devices providing only one path to the device
○ If that port or path fails, then the device is no longer available to the host system
The Port multiplier and selector topic list includes the following:
Port multipliers
○ Address connectivity
○ PM ports
○ Addressing
○ FIS modification, delivery, and Link layer protocol ...