bd40bc7c7a There are several other expansion card types derived from PCIe. Extensions and future directions. Several communications standards have emerged based on high bandwidth serial architectures. Notebooks like Lenovo's ThinkPad T, W and X series, released in MarchApril 2011, have support for an mSATA SSD card in their WWAN card slot. Some notebooks (notably the Asus Eee PC, the Apple MacBook Air, and the Dell mini9 and mini10) use a variant of the PCI Express Mini Card as an SSD. A specification published by Intel, the PHY Interface for PCI Express (PIPE), defines the MAC/PCS functional partitioning and the interface between these two sub-layers.
The specification uses a qualified sub-set of the same signal protocol, electrical definitions, and configuration definitions as the PCI Express Base Specification, Revision 2.0. In addition to sending and receiving TLPs generated by the transaction layer, the data-link layer also generates and consumes DLLPs, data link layer packets. The intent is to definitively define the location of the source and sink sides of the signal path. The specification is focused on multi-root topologies; e.g., a server blade enclosure that uses a PCI Express Switch-based topology to connect server blades to PCI Express Devices or PCI Express to-PCI Bridges and enable the leaf Devices to be serially or simultaneously shared by one or more System Images (SI). Precision Time Measurement (PTM), Revision 1.0a Defines an optional-normative Precision Time Measure.view more Defines an optional-normative Precision Time Measurement (PTM) capability. Its scope is restricted to the electrical layer and corresponds to Section 4.3 of PCI Express Base 1.0a. Data link layer. Applications. Retrieved 2 July 2015. show less 1.x ECN October 19, 2014 .