A product Line of Diodes Incorporated PI3EQX12908A2 8-channel PCI Express Gen 3, 10GbE, SATA3 ReDriver with Linear Equalization Features Description High-speed serial link with linear equalizer e PTh I3EQX12908A2 is an 8-channel PCIe Gen 2, 10GbE, SATA3, ReDriver. The device provides programmable linear equaliza - Support PCIe Gen 1/2/3 protocol, 10GbE, SATA3, SAS3 tion, output swing and gain, by either pin strapping option or Supporting 8 differential channels 2 I C Control, to optimize performance over a variety of physical Independent channel configuration of receiver equalization, mediums by reducing Inter-symbol interference. output swing and flat gain e PTh I3EQX12908A2 supports eight 100-Ohm Differential CML Per Channel Activity Detector with selectable input data I/Os and extends the signals across other distant data path- termination between 50 to V and 200K to V DD DD ways on the users platform. Per Channel Output Termination Detector on power up with e pTh rogrammable settings can be applied easily via pins, soft - selectable output termination between 50 to V and High DD 2 ware (I C) or loaded via an external EEPROM. When operating impedance in the EEPROM mode, the configuration information is auto - Very linear transfer function matically loaded on power up, which eliminates the need for an Fully compliant to PCISIG Link Training external microprocessor or software driver. Single-ended mode receiver detection for PCIe e PTh I3EQX12908A2 offers fully Linear Transfer function to ful - ly comply with all PCIe 3 Link Training signals. Input Threshold detection 2 Pin strap and I C master/slave selectable device programming with external EEPROM 2 4-bit selectable address bit for I C Supply Voltage: 3.3V0.3V o o Industrial Temperature Range: -40 C to 85 C Packaging (Pb-free & Green): 54-contact TQFN (10mm x 5.5mm x 0.5mm pitch) - ofl wthrough pinout Eye Diagram Before Channel Loss Before ReDriver After ReDriver Pericom ReDriver Device Equalizer, De-emphasis, Host Channel Loss End Point Swing, and Amplifier Gain TX + + + + RX Long input trace, Output trace cable, or connectors - - - - RX + + + + TX Long output trace, Input trace cable, or connectors - - - - www.diodes.com November 2017 PI3EQX12908A2 1 Diodes Incorporated Document Number DS40411 Rev 1-2 A product Line of Diodes Incorporated PI3EQX12908A2 Block Diagram Input Threshold Conditional Detection Output Load: 100-Ohm diff. or Hi-Z Rx detect CML Input Buffer Buff r - O+ I+ I+ I+ + Linear Equalizer Buffer + + Amplifier I- I+ I+ O- er Voltage mode Conditional ut output Input Load: Equalization buffer - - 50-Ohm or Control (4-bit) VDD Swing Flat gain 200K-ohm control Control Flat gain control (2-bits) Output Swing control (1-bit) Power PRSNT Management Repeats for 8 Channel Pin Configuration - Top View (54-TQFN) 5453 52 51 50 49 48 47 46 B0RX+ 1 45 B0TX+ B0RX- 2 44 B0TX- B1RX+ 3 B1TX+ 43 B1RX- 42 B1TX- 4 41 5 VDD B2RX+ B2RX- 6 40 B2TX+ B3RX+ 7 39 B2TX- B3RX- 8 38 B3TX+ VDD 9 37 B3TX- 36 A0RX+ 10 VDD GND A0RX- 35 A0TX+ 11 A1RX+ 12 34 A0TX- A1RX- 13 33 A1TX+ VDD 14 32 A1TX- A2RX+ 15 31 A2TX+ A2RX- 16 30 A2TX- A3RX+ 17 A3TX+ 29 A3RX- 18 28 A3TX- 19 20 21 22 23 24 25 26 27 www.diodes.com November 2017 PI3EQX12908A2 2 Diodes Incorporated Document Number DS40411 Rev 1-2 EQA2 FGB1/AD0 EQA1 FGB0/AD1 EQA0 PRSNT RXDET VDD EQB2 FGA1/SCL GND FGA0/SDA ENI2C SW0/I2C RESET SD TH0 EQB1/AD2 ALL DONE EQB0/AD3