Overview
The DS80PCI402SQ/NOPB is a low-power, 4-lane PCI Express repeater designed by Texas Instruments. This device is part of a comprehensive family of PCI Express repeaters, including the DS80PCI102 and DS80PCI800, offering proven system interoperability. The DS80PCI402 is specifically tailored for x4 (or lower) PCI-Express configurations and automatically detects and adapts to Gen-1, Gen-2, and Gen-3 data rates, facilitating easy system upgrades. It enhances the reach of PCI-Express serial links in board-to-board or cable interconnects, making it ideal for applications requiring reliable and high-speed data transmission over lossy copper cables or backplanes.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WQFN (NJY) | - |
| Pins | 54 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Data Rates | 2.5 Gbps, 5.0 Gbps, 8.0 Gbps | - |
| Receive Equalization | Up to 36 dB | - |
| Transmit De-emphasis | Up to 12 dB | - |
| Transmit VOD | 0.8 to 1.3 Vp-p | - |
| Residual Deterministic Jitter at 8 Gbps | 0.2 UI | - |
| Power Dissipation per Channel | 65 mW | - |
| Supply Voltage | 2.5 V or 3.3 V (selectable) | - |
| ESD Rating | ±5 kV HBM | - |
Key Features
- Comprehensive family with proven system interoperability for x1, x4, x8, and x16 PCI Express configurations.
- Automatic rate-detect and adaptation to Gen-1, Gen-2, and Gen-3 speeds.
- Seamless support for Gen-3 transmit FIR handshake.
- Programmable transmit de-emphasis (up to 12 dB) and receive equalization (up to 36 dB).
- Adjustable transmit VOD: 0.8 to 1.3 Vp-p (pin mode).
- Low power dissipation with the ability to turn off unused channels: 65 mW/channel.
- Automatic receiver detect (hot-plug) and multiple configuration modes: Pins/SMBus/Direct-EEPROM load.
- Flow-thru pinout: 54-Pin WQFN (10-mm × 5.5-mm, 0.5-mm pitch).
- Single supply voltage: 2.5 or 3.3 V (selectable).
- ±5 kV HBM ESD rating.
Applications
The DS80PCI402 is ideal for various applications requiring high-speed PCI Express data transmission, including:
- PCI Express Gen-1, Gen-2, and Gen-3 systems.
- Board-to-board and cable interconnects.
- Backplanes with multiple connectors.
- Long-distance transmission in lossy copper cables (10 meters or more).
Q & A
- What is the DS80PCI402SQ/NOPB used for?
The DS80PCI402SQ/NOPB is a 4-lane PCI Express repeater used to enhance the reach of PCI-Express serial links in board-to-board or cable interconnects.
- What data rates does the DS80PCI402 support?
The DS80PCI402 supports data rates of 2.5 Gbps, 5.0 Gbps, and 8.0 Gbps.
- How does the DS80PCI402 adapt to different PCI Express generations?
The DS80PCI402 automatically detects and adapts to Gen-1, Gen-2, and Gen-3 data rates.
- What is the maximum receive equalization and transmit de-emphasis of the DS80PCI402?
The DS80PCI402 offers up to 36 dB of receive equalization and up to 12 dB of transmit de-emphasis.
- How is the configuration of the DS80PCI402 managed?
The configuration can be managed through pins, SMBus/I2C, or loaded from an external EEPROM.
- What is the power dissipation per channel of the DS80PCI402?
The power dissipation per channel is 65 mW.
- What are the operating temperature and supply voltage ranges of the DS80PCI402?
The operating temperature range is -40°C to 85°C, and the supply voltage can be either 2.5 V or 3.3 V (selectable).
- What is the ESD rating of the DS80PCI402?
The DS80PCI402 has a ±5 kV HBM ESD rating.
- How does the DS80PCI402 handle hot-plug detection?
The DS80PCI402 features automatic receiver detect (hot-plug) for seamless integration.
- What is the package type and pin count of the DS80PCI402?
The DS80PCI402 comes in a 54-pin WQFN (NJY) package.
