PM3390

PMC-Sierra,Inc. PM3390 Each chip supports the EXACT Bus Protocol, which is a 10-bit, unidirectional insertion ring running at 125 MHz or 135 MHz. EXACT Bus ports allow simple box-tobox, card-to-card, or chip-to-chip interconnect. 8B/10B EXACT Bus encoding is compatible with Common Serialization (SERDES) devices to allow serial extension using coax or twinax cable. Management interface connects to an off-chip microprocessor for access to internal control registers. Octal EXACT™ Bus Switch Matrix FEATURES Sixteen Gbit/s, protocol-independent switching matrix expandable to 32 Gbit/s. Provides eight gigabit, full-duplex EXACT™ Bus ports that each support an EXACT switch port controller. Provides non-blocking connection between eight EXACT Bus (Ethernet Switching, Access, Control, and Termination) rings. Supports non-blocking connections between sixteen EXACT Bus rings to provide a system bandwidth of 32 Gbit/s using four PM3390 devices. Destination lookup table maps logical EXACT ports to physical PM3390 ports. Destination lookup table can be dynamically allocated. Provides visibility into internal dataflow to allow external flow control in systems that do not use the EXACT Bus link protocol. PACKAGING Provides a standard five signal P1149.1 JTAG test port for boundary scan board test purposes. Implemented in low power 3.3 V, CMOS technology. Available in a 352-pin Ball Grid Array (BGA) package. APPLICATIONS High Bandwidth (16 to 32 Gbit/s) Etherne...