Packet switch ICs support in-car digital communication

Packet switch ICs support in-car digital communication

New Products |
By Christoph Hammerschmidt

Offering 3-ports/4-lanes and 4-ports/4-lanes, respectively, Diodes’s two new packet switches bear the type designations PI7C9X2G304EVQ and PI7C9X2G404EVQ . The parts are designed to provide a simple solution to increase the fan-out of PCIe ports on SoCs, ASSPs, MPUs, and FPGAs, supporting advanced features in the automotive industry. The devices are qualified to AEC-Q100 Grade 2, offer an operating temperature range of -40°C to +105°C, and are manufactured in IATF 16949 certified facilities using PPAP quality control procedures.

Interoperability at the system level is guaranteed through compliance with the PCI-SIG PCIe Rev 2.1 standard. At the component level, pin-compatibility with Grade 3 solutions provides a migration path to higher performance for existing designs. 

Advanced features include an integrated clock buffer and support for peer-to-peer traffic forgreater system performance. The low-power operation is complemented by link power management, including active-state power management L0 and L1, device-state power management D0, D3Hot and D3Cold. Power dissipation in L0 is 300mW (typical), dropping to 35mW in PCI-PM L1.1 D3Hot PM sub-state mode.

Latency for a packet running through the switch without blocking is 150ns, and latency tolerance reporting improves platform power management. While the default mode is cut-through, store and forward modes are also supported. Peer-to-peer traffic is enabled through access control service support. 

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