A wireless local area network (WLAN) links two or more devices using some wireless distribution method (typically spread-spectrum or OFDM radio), and usually providing a connection through an access point to the wider internet.

IEEE 802.11 defines the physical layer (PHY) and MAC (Media Access Control) layers based on CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance). The 802.11 specification includes provisions designed to minimize collisions.

The 802.11 has two basic modes of operation: Ad hoc mode enables peer-to-peer transmission between mobile units. Infrastructure mode in which mobile units communicate through an access point that serves as a bridge to a wired network infrastructure is the more common wireless LAN application the one being covered. Since wireless communication uses a more open medium for communication in comparison to wired LANs, the 802.11 designers also included shared-key encryption mechanisms: Wired equivalent privacy (WEP), Wi-Fi protected access (WPA, WPA2), to secure wireless computer networks.

Posedge Wire-Speed Switching and Routing (WSP) Solutions are highly scalable and configurable for various applications, enabling network connectivity, switching and routing. The engines offer complete offload of TCP / IP processing at hardware level to achieve higher data rates without burdeningthe host processor. The WSP Processor architecture guarantees wire speed secure routing of any size packets between Gigabit Ethernet ports. The architecture is highly scalable for multiple Ethernet ports or peripherals with other protocols like ATM and is scalable for GPON and GEPON architectures. The hardware/software partitioning and the partitioning of software between Host Processor and Embedded modules ensure that WSP software can be very easily integrated into customer’s existing software.

Posedge Universal Flash Controller (UFC)

Posedge Universal Flash Controller (UFC) is a flexible high performance Soft IP core capable to  interface with NAND, NOR and Serial Flash devices conforming to the latest Open NAND Flash Interface Working Group standards. It has a very generic and modular architecture with AXI/AHB/APB/FIFO interfaces to meet various customer specific requirements. The UFC core internally AHB/APB slave interface to connect to SoC and Serial peripheral, NAND, NOR industry standard interfaces towards the Flash memory. The data transfer between external flash or serial devices and the flash controller is through the register I/O. The UFC core supports NAND flash access at up to 200 MTps (Million transfers per second) with transfer size of 8bits or 16 bits depending upon the mode and Serial flash accesses up to 70 Mbps enabling faster data access and boot times. To avoid data throttling at the host processor side the IP core has an internal 16 deep Data Buffer which can queue up to 16 commands. The architecture ensures to easily meet timing at all the interfaces.

Universal SD/SDIO/MMC Solutions

Posedge offers complete solutions to enable the Secure Digital, Secure Digital IO, Embedded Multi-Media Card Host and device applications. Our off-the-shelf IP products provide easy integration and significant time-to-market advantage to customers worldwide.  Fully-compliant with the latest SD standard Version 3.0 and eMMC 4.4, our IPs are interoperated with third-party vendors to enable seamless migration across different SD devices. Our complete IP deliverables include RTL IP, Software Drivers, and Evaluation/Reference board.

Posedge-SSL-1.2 - Posedge-SSL SSL IPSEC VPN protocol processor

Posedge-SSL is a complete SSL VPN protocol processor. The IP has posedge-TOE engine for complete TCP processing and session termination. posedge-SSL IP is highly flexible with a programmable controller for encapsulation and the crypto engines are implemented in hardware.

Posedge-IPSEC-1.0 - IP Security Protocol Processing Engine

Posedge-IPSEC-1.0 is a complete IPSEC protocol processor for IPV4 and IPV6. The IP is highly flexible with a programmable controller for ESP/AH encapsulation and the crypto engines are implemented in hardware. The engine is very powerful and can process a Gigabit of short IP data.

Posedge DTLS Engine

Posedge Datagram Transport Layer Security (DTLS) is defined RFC4347 of the Network Working Group of the IETF. It primarily provides communications privacy for datagram protocols and allows client/server applications to communicate in a way that prevents eavesdropping, tampering, or message forgery. The DTLS protocol is based on the Transport Layer Security (TLS) protocol and provides equivalent security guarantees. DTLS preserves the datagram semantics of the underlying transport layer data and unlike TLS that needs to run over a connection oriented protocol, DTLS is suited for connectionless protocols such as UDP.

Posedge AES Crypto Engine

Posedge AES Crypto Engine IP is a Silicon-proven high performance crypto core. The core is flexible and can be configured for various data rates and sizes depending on the application. The design supports EBC, CBC, and CTR modes of operation and is used in variety of applications including high end security devices implementing IPSEC.