Figure B±2. Training Flowchart

100VG-AnyLAN Training

8)The driver now waits for a status interrupt. The MASK7 bit in the NetMask register must be set for the status interrupt to reach ThunderLAN.

9)When this interrupt arrives, perform frame exchange

Training involves the exchange of 24 consecutive training frames between the client and the hub. The client begins by sending a training frame. The hub an- swers with the same frame, except in the Allow config field. The client verifies that the received frame is a valid training frame. This process continues until 24 successful consecutive frames are exchanged.

The 802.12 standard states that these 24 frames must be exchanged within a training window of 48 frames. If this fails, training may or may not be possible within this window. The client must ensure that there are enough frames left in the window for successful training. If this is not possible, the client must re- quest a new training window and try again. The process is shown below:

Restart

Send frame

Receive frame

Is Yes frame OK

consecutive

training

Yes

Can

we send

frames

Yes

24 more in training window

Training failed

Training successful

To determine whether the training frame received from the hub is correct the driver should:

-Check that the destination address is a null

-Check that the training frame has the adapter's address for the source ad- dress. This is not required, but is good practice.

-Check the first 55 bytes of the data field (optional private protocol informa- tion area as defined in 802.12). They should be null.

B-4

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.

Texas Instruments TNETE110A, TNETE211, TNETE100A manual Figure B±2. Training Flowchart

Models: TNETE110A TNETE211 TNETE100A

100VG-AnyLAN Training

Figure B±2. Training Flowchart

TNETE110A, TNETE211, TNETE100A specifications