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PEX8111-BB66FBC Datasheet(PDF) 1 Page - PLX Technology |
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PEX8111-BB66FBC Datasheet(HTML) 1 Page - PLX Technology |
1 / 2 page ExpressLane™ PCI Express to PCI Bridge . Features General Features o Forward and Reverse bridging o 144-ball BGA package with standard 1.0 mm pitch (13mm x 13mm) o Alternative fine-pitch BGA package (10mm x 10mm) o Low power – 400 milliwatts o EEPROM configuration option with SPI o Internal 8Kbyte shared RAM o 1.5 V core supply voltage o JTAG o Four (4) GPIO pins for maximum design flexibility o Extensive PME support including D0 and D0Active, D1, D2 and D3Hot and D3Cold o Lead-free packaging available Integrated PCI Express Interface o PCI Express Base 1.0a compliant o x1 Link, dual-simplex, 2.5 Gbps per direction o One virtual channel o Automatic LVDS polarity reversal o 128 byte maximum payload size o Link CRC o Link power management o Flow control buffering o PCI Express transaction queues for eight (8) outstanding TLPs PCI Interface o PCI v.3.0: 32 bits, up to 66 MHz o PCI Power Management 1.1 o Internal arbiter supports up to 4 external masters; REQ#/GNT# signals o 3.3V I/O and 5V tolerant PCI o Message Signal Interrupt (MSI) support o Provides PCI clock output o Four mailbox registers for messaging o VGA and ISA Enable registers for legacy operation Reversible Bridge in a Tiny Package The PLX Technology PEX 8111 bridge enables designers to migrate legacy PCI bus interfaces to the new advanced serial PCI Express. This is ideal for including existing PCI ICs on a PCI Express™ Adapter Board, such as the new ExpressCard™ or AdvancedMC™ standards. Both the standard BGA package and the tiny 10mm x 10mm fine-pitch package offering make the PEX 8111 bridge well suited for applications where board real estate is at a premium. With its low power 0.15 micron CMOS design, the PEX 8111 consumes only about 400 mW of power. Forward and Reverse Bridging The PEX 8111 supports forward and reverse bridging as defined by the PCI Express-to-PCI/PCI-X Bridge Specification 1.0. In forward mode, the bridge allows legacy PCI chips and adapters to be used with new PCI Express processor systems. Reverse bridge operation allows conventional PCI processors and chipsets to configure and control advanced PCI Express switches and endpoints. The reverse PEX 8111 not only allows complete configuration of a downstream PCI Express system from the PCI bus, but it also handles limited PCI Express root functions for reverse interrupt and Power Management Events. Block Diagram The PEX 8111 is equipped with a standard PCI Express port that operates as a single, x1 link with a maximum of 250 Megabytes per second of throughput per transmit and receive direction. The single 2.5 Gbps integrated SerDes delivers the highest bandwidth with the lowest possible pin count using LVDS technology. The PEX 8111 has a single parallel bus segment supporting the PCI v.3.0 protocol, and a 32-bit wide parallel data path running up to 66MHz. The device supports internal queues with flow control features to optimize throughput and traffic flow. PEX 8111 Version 1.4 2005 Figure 1. PEX 8111 Block Diagram j PCI Express Link (1 lane, 2.5 GHz) PCI Master and Target Interface Logic PCI Express Data Link Layer PCI Express PHY Layer PCI Express Transaction Layer (Packet Construction Logic) FIFOs 8K Shared RAM Configuration Registers PCI Bus (32-bit, 33/66 MHz) |
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