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PLX Technology PEX 8505 Hardware Reference Manual

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PEX 8505RDK
Hardware Reference Manual

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Summary of Contents for PLX Technology PEX 8505

  • Page 1 PEX 8505RDK Hardware Reference Manual...
  • Page 3 PEX 8505RDK Hardware Reference Manual Version 1.1 October 2007 Website: http://www.plxtech.com Support: http://www.plxtech.com/support Phone: 408 774-9060 800 759-3735 Fax: 408 774-2169...
  • Page 4 © 2007 PLX Technology, Inc. All rights reserved. PLX Technology, Inc. retains the right to make changes to this product at any time, without notice. Products may have minor variations to this publication, known as errata. PLX assumes no liability whatsoever, including infringement of any patent or copyright, for sale and use of PLX products.
  • Page 5 This manual also includes complete schematics and bill of materials. EVISION ISTORY Date Version Comments May 2007 0.90 Hardware Reference Manual initial release. June 2007 Minor content update. October Fixed note in schematic. 2007 PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.

  • Page 7: Table Of Contents

    RDK Port Expansion Kit Features ..............2 1.3.1 RDK Port Expansion Kit Components ............3 PEX 8505RDK Hardware Architecture ..............5 PEX 8505 PCI Express Switch ................. 6 PCI Express Card Edge P1 ................6 PCI Express Connector J1 ................6 Reference Clock Circuitry ................. 6 Reset Circuitry ....................
  • Page 8 NDICATOR DESCRIPTIONS 3-1. S SW1 D ......................11 ABLE WITCH ESCRIPTION 3-2. S SW2 D ......................12 ABLE WITCH ESCRIPTION 3-3. J ........................ 12 ABLE UMPER SETTINGS PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.

  • Page 9: General Information

    1. General Information The PLX PEX 8505RDK is a Rapid Development Kit based on the PEX 8505, a 5-lane, 5-port PCI Express switch. The PEX 8505RDK provides a complete hardware and software development platform to facilitate getting designs up and running quickly, lowering risk and reducing time-to-market.

  • Page 10: Pex 8505 Features

    Form factor based on PCI Express Card Electromechanical (CEM) Specification 1.1 • Four downstream PCI Express Slot connectors • DIP switches for hardware configuration of PEX 8505 and on-board clock circuitry • Support for Spread Spectrum Clocking (SSC). • One Hot Plug controllable slot •...

  • Page 11: Rdk Port Expansion Kit Components

    Figure 1-2. RDK Port Expander PCI Express x1 cable adapter PCI Express x1 Card Edge Figure 1-3. PCIe Cable Adapter Figure 1-4. PCIe 1-meter x1 cable PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.

  • Page 13: Pex 8505Rdk Hardware Architecture

    Reset Timer REFCLK x4 Card Edge x16 Connector RDK Port Expander PCIe x1 Cable x16 Connector x16 Connector x16 Connector Figure 2-1. PEX 8505RDK Hardware Architecture PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.

  • Page 14: Pex 8505 Pci Express Switch

    The PEX 8505 is a 5-lane, 5-port (maximum) PCI Express switch, which can be configured using strap pins or EEPROM. The RDK’s onboard PEX 8505 is set up as a 5-port switch, with one x1 upstream port (Port 0) and four x1 downstream ports (Ports 1 - 4). Ports 0 - 3 connects to the card edge (P1), while Port 4 connects to x16-sized slot connectors (J1).

  • Page 15: Reset Circuitry

    JP2 (see section 3.4 for more details). The AT25080A device can directly interface to the PEX8505. I2C Interface The PEX 8505 implements an I2C slave interface, which allows an external I2C master to read and write device registers through an out-of-band mechanism. The PEX 8505 I2C interface is accessible via a 7-bit address, at data rates up to 400kbits/sec.

  • Page 16: Power Sequencing

    2.8.2 Power Sequencing The PEX 8505 device requires that the 1.0V power rails are supplied before the 1.5V and 3.3V rails are powered. This power sequencing is accomplished via three bipolar transistors (Q3, Q4, Q6), biasing resistors and one power MOSFET (Q5).
  • Page 17 Fatal Error PEX 8505 detected a fatal error. No fatal errors reported Indication PEX 8505 PEX 8505 has asserted sideband Interrupt is not asserted INTA# interrupt PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.

  • Page 19: On-Board Connectors, Switches, And Jumpers

    100b 101b 110b 111b 3.1.2 PEX 8505 I2C Address Selection (SW2) Switch SW2 is used to select the lower three address bits of the PEX 8505’s I2C slave address. I2C_ADDR0 I2C_ADDR1 I2C_ADDR2 HIGH Figure 3-2. Switch SW2 Default Settings PEX 8505RDK Hardware Reference Manual v1.1...

  • Page 20: Push-Button Switches

    EEPROM Enable Jumper (JP5) JP5 is used to enable an EEPROM presence detection to the PEX 8505. Install a shunt between pins 1 - 2 to indicate a Serial EEPROM is present. Un-install the shunt to indicate a Serial EEPROM is not present.

  • Page 21: Slots J1 Power Fault Indication (D20)

    A2) Yes. The RDK Port Expander/PEX 8505RDK must have power applied before the PC is powered on. This will ensure than the PC BIOS enumeration will see the PEX 8505 and it’s downstream components. 6. Bill of Materials/ Schematics...
  • Page 22 0805 W-TR 1553-1-ND SML- Digikey SMT, Lumex LX0603IW- LED, Red D9, D14 P/N: 67- 0603 1548-1-ND Lumex SML- LED, Green SMT, D1, D2, D4, D5, Digikey PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 23 Res. 1/16W, 1K SMT, R99, R105, P/N: Panasonic 3EKF1001 ohm 1% 0603 R113, R123 P1.00KHC T-ND Mouser: PFC- Res. 1/10W, SMT, W0805R- 1.30K ohm 1% 0805 PFC08C1.3 03-1301-B PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 24 1083-1-ND 2J5RACTU C0402C10 Cap. Ceramic, C35, C36, C37, Digikey SMT, Kemet 3K3RACT 0.01uF, X7R, C38, C64, C65, P/N: 399- 0402 25V 10% C67, C68, C71, 1278-1-ND PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 25 Socket, 8-pin TH, 8-pin Samtec DIP, 300 mil 94SP187X Cap. Oscon, Vishay TH, 2-pin 0016EBP 180uF, 16V MANUALLY INSERTED COMPONENTS Atmel AT25080A- SPI Serial 8-lead Digikey PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 26 1% 0603 LRF2512- Res. 2W, 0.02 SMT, TTelectronics R42, R48 LF-R020-F ohm 1% 2512 ERJ- Res. 1/10W, SMT, Panasonic 3EKF2001 R43, R44 2.0K ohm, 1% 0603 PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 27 Fuse, Very fast SMT, Littlefuse 0433 005 acting, 5A 1206 PCI Express x16 87715- TH, 164- Molex Through-hole 0123 connector PLX Part #: 91-0076-001-A Product Name: PEX8505RDK PEX 8505RDK Hardware Reference Manual v1.1 © 2007, PLX Technology, Inc. All rights reserved.
  • Page 28 Revision History Rev# Date Changes from last revision 03/23/2007 Initial Revision 10/1/2007 Fixed note near U12 PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085 www.plxtech.com...
  • Page 29 1/2 oz, .0007 0.004 SPLIT POWER PLANE 1/2 oz, .0007 0.004 BOTTOM - SIGNAL + COMPONENTS 1/2 oz, .0022 PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085...
  • Page 30 Green Green VDD_3.3V P4_LED0 NL, Green NL, Green NL, 150 NL, 150 VDD_3.3V PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. P2_LED0 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085...
  • Page 31 NL, 0 NL, 0 5.1K 5.1K DEBUGSEL1 HEADER 2X2 HEADER 2X2 STRAP_PORTCFG[1:0] PEX 8505 PORT CONFIGURATION Port 0 Port 1 Port 2 Port 3 Port 4 Port 5 HEADER 2X2 HEADER 2X2 GROUND POST HOLES VOLTAGE MEASUREMENT POINTS GV12 GV12...
  • Page 32 PRSNT2# PERn15 PRSNT2# PERn15 RSVD RSVD PCI_EXP_X16_STRADDLE_MNT_CONN PCI_EXP_X16_STRADDLE_MNT_CONN NL, PCI_EXP_X16_FEMALE_CONN NL, PCI_EXP_X16_FEMALE_CONN PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085 www.plxtech.com www.plxtech.com...
  • Page 33 RSVD HP_PRSTNN3 PRSNT2# PERn15 RSVD NL, PCI_EXP_X16_FEMALE_CONN NL, PCI_EXP_X16_FEMALE_CONN NL, PCI_EXP_X16_FEMALE_CONN NL, PCI_EXP_X16_FEMALE_CONN PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085 www.plxtech.com...
  • Page 34 NL, 5.1K NL, 5.1K HP_CLKENN3 CLKENN3 NL, SN74LVC1G3157 NL, SN74LVC1G3157 NL, 5.1K NL, 5.1K PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085 www.plxtech.com...
  • Page 35 SMDAT VDD_3.3V OE1_1 OE1_2 OE6_1 HBW2 HBW1 5.1K 5.1K 5.1K 5.1K PLX Technology, Inc. PLX Technology, Inc. PLX Technology, Inc. 870 Maude Avenue 870 Maude Avenue 870 Maude Avenue Sunnyvale, CA 94085 Sunnyvale, CA 94085 Sunnyvale, CA 94085 www.plxtech.com www.plxtech.com www.plxtech.com...
  • Page 36 R95 AND R96 CAN BE INSTALLED TO S7AH-08E1A0 S7AH-08E1A0 ADJUST THE OUTPUT VOLTAGE OF U12. SEE +5VDC THE MANUFACTURERS DATASHEET FOR DETAILS. 53113-0410 53113-0410 22uF 22uF PEX 8505 POWER 1.0V REGULATOR VTT REGULATOR VDD_VTT VDDEARLY_3.3V VDDEARLY_3.3V VDD_1.0V VOUT TRIM1V SETVTT VBIAS...

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