www.ti.com

Hot-Plug-Mode Operation

Figure 1-4. GPIO Control Register

∙General control register (PCI register offset: D4h in each downstream bridge)

–RCVR_PRSNT_EN = 0b – PRSNT pin is used to determine whether slot is present

–REFCK_DIS = 0b – REFCK enabled

–LINK_ACT_RPT_CAP = 1b – Slot is link active reporting capable

–SLOT_PRSNT = 1b – Port connected to slot

∙General slot info register (PCI register offset EEh in each downstream bridge)

–SLOT_NUM = 1b for slot 1, 2b for slot 2, and 3b for slot 3

1.3Hot-Plug-Mode Operation

In hot-plug mode, the EVM board utilizes the TPS2363 PCIe server dual-slot hot-plug controller to switch power on and off to slots 1 and 2. The TPS2363 is directly controlled by the hot-plug controller built into the XIO3130. Slot 3 operates in normal mode. To configure the EVM for hot-plug operation, the six jumpers (J7, J11, J13, J14, J15, J16) must be removed (see Figure 1-5).

Figure 1-5. Power Jumpers

The dipswitch should be configured with SCL, DN1_DPSTRP and DN2_DPSTRP slide switches in the up position, and DN3_DPSTRP slide switches in the down position (see Figure 1-6). This configuration enables the EEPROM and enables hot-plug operation on slots 1 and 2.

SLLU108–July 2008

XIO3130 EVM

3

Submit Documentation Feedback

Page 2 Page 4
Page 3
Image 3
Texas Instruments XIO3130 EVM manual Hot-Plug-Mode Operation, Gpio Control Register
Page 2 Page 4

XIO3130 EVM specifications

The Texas Instruments XIO3130 EVM (Evaluation Module) serves as a powerful tool for developers and engineers looking to evaluate the capabilities of the XIO3130 device, which is a high-performance USB to I2C bridge. Designed to facilitate easy integration of I2C devices with USB hosts, the XIO3130 EVM streamlines the process of developing I2C-based applications.

One of the standout features of the XIO3130 is its ability to interface between USB hosts and multiple I2C devices, making it ideal for applications requiring communication across diverse devices. The XIO3130 supports full-speed USB 2.0 operation, ensuring robust performance while maintaining compatibility with a wide array of USB hosts. Its advanced I2C support allows developers to connect to various sensors, microcontrollers, and other peripherals, providing flexibility in design.

The evaluation module supports a wide voltage range, typically from 3.3V to 5V, allowing it to operate seamlessly with multiple I2C devices. Additionally, the XIO3130 features a programmable I2C clock speed, typically up to 1 MHz, which caters to different application requirements, from slow, legacy I2C devices to high-speed communications.

Another significant characteristic of the XIO3130 is its built-in power management capability. The device features low power consumption modes, making it suitable for battery-operated applications where energy efficiency is critical. This capability is complemented by the XIO3130’s flexibility in supporting multiple I2C bus configurations, which allows it to act as both a master and a slave device.

In terms of connectivity, the evaluation module facilitates easy access to the I2C interface via standard connectors, allowing developers to quickly prototype and test their designs. The onboard LEDs provide visual feedback on power status and data transmission activity, simplifying debugging and monitoring.

The Texas Instruments XIO3130 EVM comes complete with comprehensive software support, including drivers for popular operating systems, simplifying integration into existing projects. With its robust features, versatile technologies, and ease of use, the XIO3130 EVM empowers engineers to accelerate their development processes and bring innovative I2C-based applications to market quickly. Overall, it is a valuable resource for those looking to harness the capabilities of USB to I2C bridging technology.
Top Page Image Contents