Single-Ended Signaling Characteristics
The single-ended signals must be routed to the link interface(s) of all devices. The specification states that routing “must be done in a daisy-chain fashion, with any stubs being less than 1 inch in length.” The general characteristics of each of the single-ended signals are also the same:
Output drivers must be implemented as Open Drain LVCMOS
A pullup resistor (≥1KΩ) is required to support the open drain drivers.
Receivers must be implemented as single-ended 2.5V Tolerant LVCMOS
RESET# and PWROK may be implemented as input-only, depending on whether the device has been designed to extend RESET# during initialization. Table 14-10 lists the power requirements, input and output voltages, current requirements ...
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