PLX Technology PEX8605 Hardware Reference Manual

Tqfp-aic rapid development kit

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PEX8605 TQFP-AIC RDK
PLX Technology
Hardware Reference Manual
PEX8605 TQFP-AIC Rapid Development Kit
© PLX Technology, www.plxtech.com
Page 1 of 23
5Mar13, Version 1.0

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Summary of Contents for PLX Technology PEX8605

  • Page 1 PEX8605 TQFP-AIC RDK PLX Technology Hardware Reference Manual PEX8605 TQFP-AIC Rapid Development Kit © PLX Technology, www.plxtech.com Page 1 of 23 5Mar13, Version 1.0...
  • Page 2 This document contains PLX Confidential and Proprietary information. The contents of this document may not be copied nor duplicated in any form, in whole or in part, without prior written consent from PLX Technology, Inc. PLX provides the information and data included in this document for your benefit, but it is not possible to entirely verify and test all the information, in all circumstances, particularly information relating to non-PLX manufactured products.
  • Page 3: Table Of Contents

    PEX8605 RDK HARDWARE ARCHITECTURE ................ 10 Architecture Block Diagram ..........................10 Board Components ..............................11 PEX8605 TQFP PCI Express Switch ........................13 PCI Express Upstream Port Connection ......................13 PCI Express Downstream Port Connections ....................... 13 Hardware Strap Pin Dipswitches ......................... 13 Dipswitch Setting Tables ............................
  • Page 4 Hardware Strap Pins ............................. 22 Configuration Modules ............................22 Hardware Jumpers ..............................23 Figures Figure 1. PEX8605 TQFP RDK Front View _____________________________________________________________________ 6 Figure 2. Getting Started ______________________________________________________________________________________ 9 Figure 3. RDK Architecture ____________________________________________________________________________________ 10 Figure 4. RDK Component Locations ____________________________________________________________________________ 12 Figure 5.
  • Page 5: General Information

    The PEX8605 TQFP RDK supports the use of one configuration module slot to provide flexibility in the routing of PCIe lane 1 to either the x4 PCIe edge connector or to one of the PCIe slots. The Configuration Module enables the RDK to support the following port configurations: Table 1.
  • Page 6: Figure 1. Pex8605 Tqfp Rdk Front View

    TESTMODE1 TESTMODE0 TP21 TP32 TP27 GPIO0 I2C_ADDR2 I2C_ADDR1 I2C_ADDR0 TP25 R108 PROBE_MODE# SERDES_MODE_EN# PLL_BYPASS# TP34 TP24 FAST_BRINGUP# R109 DEBUG_SEL# GPIO1 GPIO2 GPIO3 Figure 1. PEX8605 TQFP RDK Front View © PLX Technology, www.plxtech.com Page 6 of 23 5Mar13, Version 1.0...
  • Page 7: Pex8605 Features

    PEX8605 TQFP-AIC RDK 1.1 PEX8605 Features The PEX 8605 supports the following features: • 4-Port PCI Express switch – 4 Lanes with integrated on-chip SerDes – Low-power SerDes (under 90 mW per Lane) – Fully Non-Blocking Switch architecture – Port configuration ...
  • Page 8: Pex8605 Aic Rdk Features

    14x14mm 128-lead TQFP package • Typical power – 0.8W 1.2 PEX8605 AIC RDK Features • PEX8605-AB PCI Express 4-port Gen 2 PCIE Switch • X4 Upstream goldfinger • Three downstream PCI Express x16 Slot Connectors • DIP Switches for hardware configuration of PEX8605 •...
  • Page 9: Getting Started

    PEX8605 TQFP-AIC RDK 1.3 Getting Started Figure 2. Getting Started Follow the following steps to use the RDK. 1) Plug board into x16 PCI Express slot on motherboard. 2) Check and set dipswitches for desired port configuration. 3) Check that the correct configuration module is plugged into the socket.
  • Page 10: Pex8605 Rdk Hardware Architecture

    PEX8605 TQFP-AIC RDK 2 PEX8605 RDK Hardware Architecture 2.1 Architecture Block Diagram X16 Straddle Mount Connector(P4) X16 Connector(P5) X16 Connector(P3) EEPROM JTAG Lane2 Lane3 Lane1 (U2) (JP1) PEX 8605 TQFP (JP2) (U1) Status LED RefClk Lane0 DIPSW Buffer (U8) X4 Card Edge(P2) PERST# Figure 3.
  • Page 11: Board Components

    Location Component Location PCI Express Slots (P3,P4, P5) JTAG connector (JP1) Lane Good LEDs (D3,D4,D5,D6) PEX8605 TQFP Chip (Chip not installed in diagram) (U1) Power-on Reset Button (S2) PCIE Goldfinger (P2) PERST# Button (S1) Voltage Indicator LEDs (D9,D10,D11) I2C Connector (JP2)
  • Page 12: Figure 4. Rdk Component Locations

    PEX8605 TQFP-AIC RDK Figure 4. RDK Component Locations © PLX Technology, www.plxtech.com Page 12 of 23 5Mar13, Version 1.0...
  • Page 13: Pex8605 Tqfp Pci Express Switch

    2.4 PCI Express Upstream Port Connection The upstream x4 connector can be configured as a x1 or x2 link connecting the PEX8605 to the add-in card male edge connector. The PEX8605 RDK can plug into x1 PCI Express slots by using a PCI Express lane converter, such as PCI Express X4-To-X1 Converter made by Adex Electronics.
  • Page 14: Dipswitch Setting Tables

    Table 3. SW1 Functions SW1 Functional Description Switch Position Settings L = x1 x1 x1 PORTCFG0 H = X2 x1 Used to select the PEX8605’s Port configuration. Default Setting = L L = Enables SMBUS Mode SMBUS_EN# H = Enables I...
  • Page 15: Table 4. Sw2 Functions

    GPIO0 Factory Test Only Default Setting = H Used to define the default value of the three least significant bits of the PEX8605 I2C/SMBus 7-bit Slave address. CADDR[2:0] C Lower Slave Address Bits Default Setting = LLL Table 5. SW3 Functions...
  • Page 16: Power Circuitry

    Voltage monitoring circuits are placed close to the PEX8605 chip. If the supplies are off 10% of their normal values, red LED(s) will be turned on to signal the potential voltage problem to the chip. Bypass capacitors, plane capacitors are used to filter out the voltage noise.
  • Page 17: I2C/Smbus Interface

    PEX8605 internal registers, run internal output probe mode, monitor error counters, and monitor status of all ports. The PEX8605 RDK provides a 10 pin I2C header (JP2). The pin header included is compatible with the Aardvark I2C/SPI Host Adapter Part Number: TP240141 by TotalPhase.
  • Page 18: Fatal_Err#, And Inta

    2.14 Reset Circuitry The reset circuit of PEX8605 RDK contains a two input AND gate and a reset chip. The PERST# from the PCI Express male connector and the manual reset from the pushbutton switch input to the AND gate and the output of the AND gate is fed into the reset chip.
  • Page 19: Port Good Indicator Leds

    PEX8605 TQFP-AIC RDK Figure 11. Manual PERST# button 2.15 Port Good Indicator LEDs Each PCIe port has a port status indicator associated with it. They are grouped in the upper-left corner of the board for easily visibility. The port indicator LED is either on, off, or flashing to indicate the link status.
  • Page 20: Pcie Protocol Debug

    PEX8605 TQFP-AIC RDK 2.16 PCIe Protocol Debug All PCIe Lanes pass through an Agilent soft touch midbus probe footprint in order to monitor PCIe traffic. Figure 13: Midbus 2.0 Probe Footprint 2.17 WAKE# and Vaux Support The Wake# signals will be connected together and Vaux will be routed from the upstream port to all downstream slots.
  • Page 21: Rdk Configurations

    3 RDK Configurations The PEX8605 RDK can be configured to operate in one of several modes as described in this section. The modes can be entered by changing jumpers and configuration modules. The configuration modules control the routing of the PCIE lanes and Refclk, and the strap pin dipswitches configures the modes of the PEX8605.
  • Page 22: Hardware Strap Pins

    PEX8605 TQFP-AIC RDK 3.2 Hardware Strap Pins The PEX8605 RDK has a number of strap pins which provide the capability to perform various types of hardware initialization without the use of EEPROM. Table 9 shows the port configuration strap pin values.
  • Page 23: Hardware Jumpers

    PEX8605 TQFP-AIC RDK 3.4 Hardware Jumpers The PEX8605 RDK has a few jumper settings for testing purposes. These can be left at their default settings, as detailed below: Table 10. PEX8605 RDK Jumper Settings Jumper Default Setting Description Connects the EE_CS# signal of the PEX8605 to the EEPROM.Can be used to disable the EEPROM for testing.

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