Adapter Host Registers

-If ADR_SEL[1::0] = 00, the 32 LSBs of the 68-bit word are accessed.

-If ADR_SEL[1::0] = 01, the middle 32 bits of the 68-bit word are accessed.

-If ADR_SEL[1::0] = 1X, the four MSBs of the 68-bit word are accessed (in the four LSBs of DIO_DATA).

PCI bus-byte enables are honored in writes to the internal RAM; individual byte writes are allowed. If autoincrement mode is enabled, only the row address in- crements; the word address is not affected.

A.2.5 DIO Data Register±DIO_DATA @ Base_Address + 12 (Host)

The DIO_DATA register address allows indirect access to internal ThunderLAN registers and SRAM. There is no actual DIO_DATA register; ac- cesses to this address are mapped to an internal bus access at the address specified in the DIO_ADR register.

The DIO_DATA location uses 32-bit PCI data transfers with full-byte control, following the normal PCI Local Bus Specification conventions. ThunderLAN uses the target-ready (PTRDY#) signal to insert PCI wait states and to ensure correct data transfers.

Writes to this register cause control of the EEPROM interface pins to go to the NetSio register. Control of the EEPROM interface swaps between the PCI NVRAM register and the NetSio register on a most-recently-written basis. Whenever the PCI NVRAM register is written to, it takes control of the EEPROM interface pins. Whenever the DIO_DATA register is written to, the NetSio register takes control of the EEPROM interface pins.

A-20

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Texas Instruments TNETE110A, TNETE211, TNETE100A manual DIO Data Register±DIODATA @ BaseAddress + 12 Host
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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.
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