PCI Configuration Space

Normally, access to the configuration space is limited to the operating system. On power-up, the vendor ID, device ID, revision, subclass, Min_Gnt, and Max_Lat registers are loaded with default values. Vendor-specific data is loaded into these registers by placing the data into the EEPROM, which is read at the end of reset if autoload is enabled with a pullup resistor on the EDIO pin. If the data read from the EEPROM has a checksum error, values are fetched from the default PCI parameter registers, which are located at addresses 0x08h to 0x0Fh in the internal/DIO registers space.

Some fields in the configuration space like the bits in the memory base address register and the I/O base address register, which indicate the space size al- location required to access the host registers, are hardwired in the Thunder- LAN controllers. Some of the allowed PCI configuration space values like base registers beyond the basic I/O and memory base registers are not implement- ed because no other entities are supported by this PCI interface other than the network function.

To find register information, you must first identify the PCI function ID:

//±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±

//PCIFindDevice ± Find PCI device

//Parameters:

//

DeviceID

WORD The device ID

//

VendorID

WORD The vendor ID

//

Index

WORD index (normally 0, use when more than

1 device)

 

//

pDev

WORD* Where to put the device id

//

 

 

//Return val:

//

int

0 if successful. see std return codes in

header

 

//±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±± WORD PciFindDevice(

WORD

deviceID,

WORD

vendorID,

WORD

Index,

WORD

*pDev)

{

 

union REGS r;

2-6

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Texas Instruments TNETE100A, TNETE211, TNETE110A manual Word

TNETE110A, TNETE211, TNETE100A specifications

Texas Instruments has been a leader in developing innovative semiconductor solutions, and their Ethernet PHY (Physical Layer Transceiver) family, specifically the TNETE100A, TNETE211, and TNETE110A, exemplifies this commitment to excellence. These devices are designed to address the needs of a variety of applications, ranging from industrial automation to consumer electronics.

The TNETE100A is a highly versatile Ethernet PHY capable of supporting 10/100 Mbps Ethernet connectivity. One of its main features is the low power consumption, which makes it an ideal choice for battery-operated devices. It incorporates advanced power management technologies, ensuring that the device operates efficiently while maintaining high performance. The TNETE100A also supports Auto-Negotiation, allowing for seamless communication between devices at different speeds, thereby enhancing flexibility in network configurations.

Moving to the TNETE211, this device supports 10/100/1000 Mbps Ethernet, making it suitable for high-speed networking applications. This PHY integrates features such as Energy Efficient Ethernet (EEE), which reduces power consumption during low-traffic periods, aligning with the contemporary demand for energy efficiency in networking equipment. The TNETE211 is engineered with robust EMI (Electromagnetic Interference) performance and provides multiple interface options, making it a versatile choice for embedded systems and networking applications.

The TNETE110A stands out in the lineup as a sophisticated device that supports both Fast Ethernet and Gigabit Ethernet. This PHY utilizes advanced signal processing techniques to ensure superior link robustness and performance in noisy environments. Its features include an integrated transformer driver, which simplifies PCB design and allows for compact device layouts. Additionally, the TNETE110A is designed to be fully compliant with Ethernet standards, ensuring reliable interoperability with other network components.

All three PHYs leverage Texas Instruments' expertise in integrated circuit design, resulting in low jitter and high signal integrity, essential for modern communication standards. They are optimized for a wide range of temperatures, making them suitable for harsh industrial applications. With built-in diagnostic capabilities, these devices also enable efficient fault detection and troubleshooting in network infrastructures.

In summary, the Texas Instruments TNETE100A, TNETE211, and TNETE110A are exemplary Ethernet PHY devices, each tailored to meet specific networking needs while adhering to stringent efficiency and performance criteria. Their advanced features, technologies, and reliability make them pivotal components in today's fast-paced digital landscape.