Products / Hubs, Port Multipliers, Repeaters, Redrivers / Redriver, Retimer / External PCIe (SFF-8644)

PCIE8XG4RD02

SFF-8644 (1x2) to SFF-8654 8x PCIe x8 Gen 4 (16 Gbps) ReDriver Board

Specifications

Downloads

Highlights

SFF-8674 1x2 4x to SFF-8654 8x PCIe x8 Gen 4 ReDriver
- Redriver with Linear Equalization support PCIe Gen 4.0
Converts SFF-8674 to SFF-8654
- Upstream Facing Port: Mini-SAS HD 1x2 4x 72pin Connector
- Downstream Facing Port: SlimSAS 8x 74pin Connector
Supports Low Profile PCI Form Factor (Low Profile PCI Bracket S-BR-00248-16-1020)

Introduction

PCIE8XG4RD02 is SFF-8674 1x2 4x to SFF-8654 8x PCIe x8 Gen 4 (16 Gbps) ReDriver Card.

PCIE8XG4RD02 is designed with two Eight-Channel PCIe 4.0 Linear Redrivers to support PCIe Gen 4.0.

The Eight-Channel PCIe 4.0 Linear Redriver deploy continuous time linear equalizers (CTLE) to provide a high-frequency boost. The equalizer can open an input eye that is completely closed due to inter-symbol interference (ISI) induced by an interconnect medium, such as PCB traces and cables.

The linear redriver along with the passive channel as a whole get link trained for best transmit and receive equalization settings resulting in best electrical link and lowest possible latency. The linear redriver along with the passive channel as a whole get link trained for best transmit and receive equalization settings resulting in best lectrical link and lowest possible latency. Low channel-channel cross-talk, low additive jitter and excellent return loss allows the device to become almost a passive element in the link. The devices has internal linear voltage regulator to provide clean power supply for high speed datapaths that provides high immunity to any supply
noise on the board.

Technical Specifications

PCIe Interface	Upstream Facing Port: Mini-SAS HD 1x2 4x Receptacle Connector (24Gb/s) SFF-8674 1x2 4x 72pin Downstream Facing Port: SlimSAS 8x Receptacle Connector SFF-8654 8x 74pin 8-lane PCI Express PCIe Gen 3 (8.0 GT/s) PCIe Gen 4 (16.0 GT/s)
ReDriver Feature	Eight channel linear equalizer supporting PCIe 4.0 up to 16 Gbps CTLE boosts up to 18 dB at 8 GHz Automatic receiver detection for PCIe use cases Protocol agnostic linear redriver allows seamless support for PCIe link training Ultra-low latency of 90 ps Low additive random jitter of 70 fs with PRBS data Low active power of 107 mW/channel Pin-strap programming
Switch	SW1~SW2: Equalization setting SW1: PCIe Tx0~7 Equalization Setting From SFF-8654 (PCIE1) to ReDrivers (U1) SW2: PCIe Rx0~7 Equalization Setting From SFF-8674 (CON1) to ReDrivers (U2) SW3: Redeiver & WAKE# setting SW3-1&3-2: Redriver Auto or Enable by Pin B2 (CPRSNT#) SW3-3: WAKE# : Enable or Disable
Power Supply	Power Input Range DC 3.3V From either PCIe 3.3V or Power Connector (MINI-COMBICON Header)
Power On Switch	Wafer Connector; Pitch=2.54mm Note: To enable the auto-switch power On/Off control the Host Cable Adapter must have design to provide Cable Power On control and you need to use a cable (CB-00711) to join another PWR ON connector on IOI Docking Board (PCIEX16D01, PCIEX16D03, PCIEX16D05-5).
Physical Dimensions & Weight	64.4(L)mmx84.4(D)mm NW: 55.3g

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