Products / Host Cards / PCIe x8 / External PCIe (SFF-8644)

EP8X-PCIE8XG302

External PCIe (SFF-8644 1x2) to PCIe x8 Gen 3 Switch Host Card

Specifications

Downloads

Highlights

Upstream: 8-lane PCI Express Gen 3 (8.0 Gbps)
Downstream: External PCIe Gen 3 (8.0 Gbps) Cable Ports (SFF-8644 1x2 Connector)
Supports PCIe Gen 1/PCIe Gen 2/PCIe Gen 3 transfer rates
- PCIe Gen 1: 2.5 Gbps per Lane
- PCIe Gen 2: 5.0 Gbps per Lane
- PCIe Gen 3: 8.0 Gbps per Lane
EP8X-PCIE8XG302 supports the following Mode configurations
- x8, x8 --- One 8-lane External PCIe Port
- x8, x4 x4 --- Two 4-lane External PCIe Ports
Supports Low Profile PCI Form Factor (Low Profile PCI Bracket S-BR-00248-12-1020)

Introduction

EP8X-PCIE8XG302 is External PCIe x8 Gen 3 Switch Host Card. Designed to overcome the limited PCIe connectivity of most desktop computers, the EP8X-PCIE8XG302 can be quickly and easily set up for external expansion. No additional software or drivers are needed.

Utilizing the standard PCI Express Switch, the 16-Lane/5-Port PCI Express Gen 3 (8 Gbps) Switch provides the most efficient fan-out solution.

EP8X-PCIE8XG302 supports the following multiple Port configuration options:

Technical Specifications

Upstream PCIe interface

EP8X-PCIE8XG302-H 8-lane PCI Express Gen 3 (8.0 GT/s)
- x8, x8 Mode Edge Finger (Port1)
- x8, x4 x4 Mode Edge Finger (Port0)
EP8X-PCIE8XG302-T 8-lane PCI Express Gen 3 (8.0 GT/s)
- x8, x8 Mode SFF-8644 1x2 Connector (Port0)

Downstream PCIe interface

EP8X-PCIE8XG302-H 8-lane PCI Express Gen 3 (8.0 GT/s)
- x8, x8 Mode SFF-8644 1x2 Connector (Port0)
- x8, x4 x4 Mode SFF-8644 1x2 Connector (Port1&Port2)
EP8X-PCIE8XG302-T 8-lane PCI Express Gen 3 (8.0 GT/s)
- x8, x8 Mode Edge Finger (Port1)

Key Features

Standards Compliant
- PCI Express Base Specification, r3.0 (compatible w/ PCIe r1.0a/1.1 & 2.0)
- PCI Power Management Spec r1.2
- Microsoft Windows Logo Compliant
- Supports Access Control Services
- Dynamic link-width control
- Dynamic SerDes Speed Control
High Performance
- performancePAK
  - Multicast
  - Dynamic Buffer/FC Credit Pool
- Non-blocking switch fabric
- Full line rate on all ports
- Cut-Thru packet latency of less than 100ns between symmetric (x4 to x4) ingress and egress Ports
- 2KB Max Payload Size
Quality of Service (QoS)
- Traffic Class Queuing
- Eight Traffic Classes per port
- Weighted round-robin source port arbitration

Lane Status LEDs

Slow Blink: Gen 1
Fast Blink: Gen 2
Solid: Gen 3

x8, x8 mode
- Upstream Lane Status LED
  - LEDP1: Upstream Status LED
- Downstream Lane Status LEDs
  - LEDP0: Downstream Status LED
x8, x4 x4 mode
- Upstream Lane Status LED
  - LEDP0: Upstream Status LED
- Downstream Lane Status LEDs
  - LEDP1: Downstream Status LED
  - LEDP2: Downstream Status LED

Switch

SW1-1&2: Max PCIe Data Rate

SW 1-1	SW 1-2	PCIe Data Rate
ON*	OFF*	Gen 3 (8.0 GT/s)
OFF	OFF	Gen 2 (5.0 GT/s)
OFF	ON	Gen 1 (2.5 GT/s)

SW1-3&4: CFC(100MHz) Spread Setting

SW 1-3	SW 1-4	CFC(100MHz) Spread
OFF	ON	Down -0.5
OFF*	OFF*	No Spread
ON	OFF	Down -0.75

SW2-1&2: PCIe Mode

SW 2-1	SW 2-2	Mode
OFF	ON	x8, x8
ON	OFF	x8, x4 x4

SW2-3: Host or Target

SW 2-3	Host	Target
x8, x8 upstream	Port1 OFF	Port0 ON
x8, x4 x4 upstream	Port0 ON	Port0 OFF

SW2-4: NT Port

SW 2-4	NT Port
ON	Port2
OFF*	Disable*

Jumper for EP8X-PCIE8XG302-H

JP1: SSC RefCLK Enable
- C-1: Port1 (x8, x8 mode)
- C-0: Port0 (x8, x4 x4 mode)

Computer Platform Requirements

Desktop computer equipped with a PCIe x8, x16 slot

Physical Dimensions

84(H)x134(L) mm
NW: 78g

Available Models

For Host: EP8X-PCIE8XG302-H

For Target: EP8X-PCIE8XG302-T

SFF-8644 1x2 Fixed-Side Connector Pinout

Optional Accessories

Low Profile PCI Bracket (S-BR-00248-12-1020)
SFF-8644 Cable (CB-S0020)
Expansion Docking Board (PCIEX16D02)