Initializing

3.1.3Finding Which Interrupt was Assigned

When the base register is established, the driver needs to find out what inter- rupt was assigned to the card. The next code segment from GetPciConfig be- low retrieves the PCI_INTLINE which in x86-based PCs refers to the interrupt request (IRQ) numbers (0±15) of the standard dual 8259 configuration. Note that this piece of information is retrieved via the key parameter of the evalua- tion module network interface card's (EVMNIC's) PCI devIce ID.

(#define PCI_INTLINE 0x3C)

...

if (!(nic.Irq = PciRdByte(nic.DevId, PCI_INTLINE))) error(ºPCI Config failed: Unconfigured interruptº);

Implemented hardware interrupts in a PC range from 0 to 15, but 0 is usually unavailable to peripherals. It is suggested that a value of 0 or greater than 15 be rejected. This gives greater system protection over a check for 0 or 255, which is the PCI-compliant answer for none available. (Refer to the PCI Local Bus Specification, section 6.2.4.)

Initializing and Resetting

3-5

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Texas Instruments TNETE100A, TNETE211, TNETE110A manual Finding Which Interrupt was Assigned, #define Pciintline 0x3C
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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.

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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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