Pci Express M.2 Specification Revision 1.0 Pdf 14

PCI Express M.2 Specification Revision 1.0

PCI Express M.2 is a new standard for data transfer devices that uses a small and flexible connector and module card. It is based on the PCI Express Mini Card and PCI Express Half Mini Card specifications, but with some key differences that make it more suitable for mobile and desktop applications. In this article, we will introduce the main features and benefits of PCI Express M.2 Specification Revision 1.0, which was released in 2013.

Pci Express M.2 Specification Revision 1.0 Pdf 14

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What is PCI Express M.2?

PCI Express M.2, also known as Next Generation Form Factor (NGFF), is a specification for a new connector and module card that can support various data transfer devices, such as solid-state drives (SSDs), wireless network cards, Bluetooth modules, and cellular modems. It is designed to replace the mSATA standard, which uses PCI Express Mini Card layout and connectors. PCI Express M.2 offers several advantages over mSATA, such as: Smaller size: PCI Express M.2 modules can have different lengths and widths, ranging from 16 mm x 30 mm to 22 mm x 110 mm, while mSATA modules are fixed at 30 mm x 51 mm. This allows for more flexibility and space efficiency in device design. Higher performance: PCI Express M.2 modules can support up to four lanes of PCI Express 3.0, which can deliver up to 4 GB/s of bandwidth, while mSATA modules are limited to one lane of PCI Express 2.0, which can deliver up to 500 MB/s of bandwidth. This enables faster data transfer and lower latency for devices. More functionality: PCI Express M.2 modules can support various protocols and interfaces, such as SATA, USB, DisplayPort, and I2C, while mSATA modules only support SATA. This allows for more compatibility and versatility for devices.

What are the features of PCI Express M.2 Specification Revision 1.0?

PCI Express M.2 Specification Revision 1.0 was released in April 2013 by the PCI-SIG, the organization that develops and maintains the PCI standards. It defines the physical and electrical characteristics of the PCI Express M.2 connector and module card, as well as the software interface and configuration options for devices. Some of the main features of the specification are: Connector: The PCI Express M.2 connector has 67 pins on each side, for a total of 134 pins. It has two rows of contacts, one for the host (motherboard) and one for the device (module card). The connector supports various keying options, which determine the type and number of signals that can be used by the device. For example, key A supports one lane of PCIe or USB 2.0, key B supports one lane of PCIe or SATA or USB 3.0 or USB 2.0 or SMBus or I2C or UART or PCM or SIM card interface, and key E supports one lane of PCIe or USB 2.0 or SDIO or UART or I2S or PCM. The keying options also prevent incompatible devices from being inserted into the connector. Module card: The PCI Express M.2 module card has a printed circuit board (PCB) with a notch that matches the keying option of the connector. It also has mounting holes that correspond to different lengths and widths of the module card. The specification defines five standard lengths (30 mm, 42 mm, 60 mm, 80 mm, and 110 mm) and two standard widths (16 mm and 22 mm) for the module card. The module card can have components on one or both sides of the PCB. The module card can also have an optional retention clip that secures it to the connector. Software interface: The PCI Express M.2 specification defines a software interface that allows the host to detect, configure, and manage the device. The software interface uses ACPI (Advanced Configuration and Power Interface) tables to provide information about the device's capabilities, power states, thermal properties, and configuration options. The software interface also uses PCI Express Base Specification features, such as hot-plug, power management, and error handling, to support the device's operation.

What are the benefits of PCI Express M.2 Specification Revision 1.0?

PCI Express M.2 Specification Revision 1.0 provides several benefits for device manufacturers and users, such as: Scalability: PCI Express M.2 specification supports various module card sizes and keying options, which enable device manufacturers to customize their products according to different market segments and customer needs. For example, a device manufacturer can choose a smaller module card size for a thin and light laptop, or a larger module card size for a high-performance desktop. Compatibility: PCI Express M.2 specification supports various protocols and interfaces, which enable device manufacturers to use existing or emerging technologies for their products. For example, a device manufacturer can use SATA for a legacy SSD, or PCIe for a new SSD with NVMe (Non-Volatile Memory Express) protocol. Performance: PCI Express M.2 specification supports up to four lanes of PCI Express 3.0, which enable device manufacturers to deliver faster and more reliable data transfer for their products. For example, a device manufacturer can use four lanes of PCIe 3.0 for an SSD that can achieve up to 4 GB/s of sequential read speed. Efficiency: PCI Express M.2 specification supports various power states and thermal properties, which enable device manufacturers to optimize the power consumption and heat dissipation of their products. For example, a device manufacturer can use ACPI tables to define the optimal power state and thermal threshold for an SSD that can reduce the power consumption and heat generation.

Conclusion

PCI Express M.2 Specification Revision 1.0 is a new standard for data transfer devices that offers smaller size, higher performance, more functionality, and more efficiency than the previous mSATA standard. It is suitable for various applications, such as SSDs, wireless network cards, Bluetooth modules, and cellular modems. It is compatible with existing and emerging technologies, such as SATA, USB, DisplayPort, and NVMe. It is scalable and customizable for different market segments and customer needs. It is supported by a software interface that enables the host to detect, configure, and manage the device. It is a promising solution for the future of data transfer devices.

If you want to learn more about PCI Express M.2 Specification Revision 1.0, you can download the PDF document from the PCI-SIG website. You can also find more information about PCI Express standards and specifications on the PCI-SIG website. 116884e12c