Overview
The Texas Instruments XIO3130IZHC is a PCI Express ×1 3-port fanout switch, designed to provide high-performance switching capabilities within the PCI Express fabric. This component features a single ×1 upstream port and three independently configurable ×1 downstream ports, each supporting full 250-MB/s packet throughput in both directions simultaneously. The XIO3130IZHC is built with a cut-through architecture to reduce latency, enabling packets to be forwarded as soon as the address or routing information is decoded. It also supports various power management and hot plug features, making it a versatile solution for modern computing systems.
Key Specifications
| Specification | Details |
|---|---|
| PCI Express Specification | Revision 1.1 |
| Upstream Port | Single ×1, 250-MB/s packet throughput |
| Downstream Ports | Three ×1, 250-MB/s packet throughput each |
| Packet Transmission | Cut-through architecture |
| Maximum Data Payload Size | 256 bytes |
| Power Management | Support for D1, D2, D3hot, and D3cold; Active State Power Management (ASPM) using L0s and L1 |
| Low-Power Mode | Low-Power PCI Express Transmitter Mode |
| AUX Power Switch | Integrated AUX Power Switch drains VAUX power only when main power is off |
| PCI Hot Plug | Integrated PCI Hot Plug support |
| Reference Clock Buffers | Integrated REFCLK buffers for switch downstream ports |
| I/O Pins | 3.3-V multifunction I/O pins for PCI Hot Plug status and control or general purpose I/Os |
| Serial EEPROM | Optional serial EEPROM for system-specific configuration register initialization |
| Package Type | 196-BGA package |
Key Features
- Cut-Through Architecture: Reduces latency by forwarding packets as soon as the address or routing information is decoded.
- Peer-to-Peer Support: Enables direct communication between devices connected to different downstream ports.
- Wake Event and Beacon Support: Supports Beacon transmission and WAKE side band signal for system wake-up.
- Active State Power Management (ASPM): Uses both L0s and L1 to manage power efficiently.
- Integrated AUX Power Switch: Drains VAUX power only when main power is off.
- Integrated PCI Hot Plug Support: Supports hot plug operations for downstream ports.
- Integrated REFCLK Buffers: Provides reference clock buffers for downstream ports.
- 3.3-V Multifunction I/O Pins: Can be used for PCI Hot Plug status and control or as general purpose I/Os.
- Optional Serial EEPROM: For system-specific configuration register initialization.
Applications
The XIO3130IZHC is designed for use in various computing systems, including PCs and PDAs, where high-speed data transfer and efficient power management are critical. It is particularly suitable for applications requiring multiple downstream ports with independent configuration capabilities, such as in server systems, workstations, and other high-performance computing environments.
Q & A
- What is the primary function of the XIO3130IZHC?
The XIO3130IZHC is a PCI Express ×1 3-port fanout switch, providing a single ×1 upstream port and three ×1 downstream ports for high-speed data transfer. - What is the packet throughput of each port?
Each port supports full 250-MB/s packet throughput in both directions simultaneously. - What architecture does the XIO3130IZHC use for packet transmission?
The XIO3130IZHC uses a cut-through architecture to reduce latency. - Does the XIO3130IZHC support power management features?
Yes, it supports D1, D2, D3hot, and D3cold power states and Active State Power Management (ASPM) using L0s and L1. - What is the purpose of the integrated AUX power switch?
The integrated AUX power switch drains VAUX power only when the main power is off. - Does the XIO3130IZHC support PCI Hot Plug operations?
Yes, it supports integrated PCI Hot Plug operations for downstream ports. - What is the role of the REFCLK buffers in the XIO3130IZHC?
The REFCLK buffers provide reference clock signals for the downstream ports. - What are the multifunction I/O pins used for?
The 3.3-V multifunction I/O pins can be used for PCI Hot Plug status and control or as general purpose I/Os. - Is a serial EEPROM optional for the XIO3130IZHC?
Yes, an optional serial EEPROM is available for system-specific configuration register initialization. - In what type of package is the XIO3130IZHC available?
The XIO3130IZHC is available in a 196-BGA package.
