Texas Instruments TNETE100A, TNETE211, TNETE110A specification

Adapter Internal Registers

Table A±8. Network Command Register Bits (Continued)

Bit	Name	Function
0	TXPACE	Transmit pacing (CSMA/CD): This bit allows pacing of transmitted CSMA/CD frames to
		improve network utilization of network file servers. When this bit is set, the pacing algo-
		rithm is enabled. When this bit is cleared, the pacing algorithm is disabled.
		The pacing algorithm automatically delays new adapter frame transmissions in conten-
		tion situations. If a transmitted frame either collides with another frame or has to defer
		to another transmission, a pacing delay of four interframe gaps (4*96 bit-times) is in-
		serted between new frame transmissions. This pacing delay continues to be inserted
		until 31 sequential frames are transmitted without collision or deference.

A.3.2 Network Serial I/O Register±NetSio @ 0x00 (DIO)

This register shares control of the external EEPROM interface with the PCI NVRAM register. Control of the EEPROM interface swaps between these two control registers 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. On reset (software or hardware), control of the inter- face is given to the PCI NVRAM register. All bits in this register are set to 0 on an Ad_Rst or when PRST# is asserted.

			Byte 1
15	14	13	12	11	10	9	8
MINTEN	ECLOK	ETXEN	EDATA	NMRST	MCLK	MTXEN	MDATA

Table A±9. Network Serial I/O Register Bits

Bit	Name	Function
15	MINTEN	MII Interrupt enable: When this bit is set to 1, the MIRQ interrupt bit is set if the MDIO
		pin is asserted low.
14	ECLOK	EEPROM SIO clock: This bit controls the state of the EDCLK pin. When this bit is set
		to 1, EDCLK is asserted. When this bit is set to 0, EDCLK is deasserted.
		This bit is also used to determine the state of the EEPROM interface. If the EEPROM
		port is disabled, this bit is always read as 0, even if a value of 1 is written to the bit.
		ThunderLAN detects that the EEPROM port is disabled by sensing the state of the
		EDCLK pin during reset. If the EDCLK pin is read as 0 during reset (due to an external
		pulldown resistor), then the EEPROM interface is disabled and no attempt is made to
		read configuration information.
13	ETXEN	EEPROM SIO transmit enable: This bit controls the direction of the EDIO pin. When this
		bit is set to 1, EDIO is driven with the value in the EDATA bit. When this bit is set to 0,
		the EDATA bit is loaded with the value on the EDIO pin.

A-24

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 TNETE100A, TNETE211, TNETE110A Network Serial I/O Register±NetSio @ 0x00 DIO

Models: TNETE110A TNETE211 TNETE100A

Table A±8. Network Command Register Bits (Continued)

Bit

TXPACE

A.3.2 Network Serial I/O Register±NetSio @ 0x00 (DIO)

Table A±9. Network Serial I/O Register Bits

Bit

MINTEN

ECLOK

ETXEN

TNETE110A, TNETE211, TNETE100A specifications