S Y S T E M C O N T RO L M O D U L E

. . .

Interrupt controller. .

Interrupt Source 0

Interrupt Source 1

Interrupt Source 31

Interrupt Source ID Reg 0

Interrupt Source 0

Interrupt Source 1

Interrupt Source 31

Interrupt Source ID Reg 1

Interrupt Source 0

Interrupt Source 1

Interrupt Source 31

Interrupt Source ID Reg 31

Invert

Invert

Invert

Priority Level 0 (highest)

Enable

Priority Level 1

Enable

Priority Level 31 (lowest)

Enable

 

IRQ

 

 

FIQ

 

 

Winning Priority Level

Active Interrupt Level Reg

 

 

 

Interrupt Vector Address Reg Level 0

 

Priority

Interrupt Vector Address Reg Level 1

ISADDR Reg

Encoder

 

 

 

 

Interrupt Vector Address Reg Level 31

 

IRQ characteristics

Interrupt sources

The IRQ interrupts are enabled by the respective enabling bits.

Once enabled, the interrupt source programmed in the Interrupt Configuration register for each priority level connects the interrupt to one of 32 priority lines going into the priority encoder block.

The priority encoder block has a fixed order, with line 0 as the highest priority. The interrupt with the highest priority level has its encoded priority level displayed, to select the appropriate vector for the ISADDR register (see “ISADDR register” on page 176).

The CPU, once interrupted, can read the ISADDR register to get the address of the Interrupt Service Routine. A read to the ISADDR register updates the priority encoder block, which masks the current and any lower priority interrupt requests. Writing to this address indicates to the priority hardware that the current interrupt is serviced, allowing lower priority interrupts to become active.

The write value to the ISADDR register must be the level of the interrupt being serviced. Valid values are 0–31.

The priority encoder block enables 32 prioritized interrupts to be serviced in nested fashion. A software interrupt can be implemented by writing to a software interrupt register. The software interrupt typically is assigned level 1 or level 2 priority.

An Interrupt Status register shows the current active interrupt requests. The Raw Interrupts register shows the status of the unmasked interrupt requests.

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Digi NS9215 manual IRQ characteristics Interrupt sources, Irq Fiq
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NS9215 specifications

The Digi NS9215 is a powerful solution designed for industrial applications that require reliable connectivity and robust performance. Built on a foundation of advanced technologies, the NS9215 serves as a versatile networking device that meets the demands of automation, remote monitoring, and data acquisition.

One of the standout features of the Digi NS9215 is its multi-protocol support. It is capable of handling various communication protocols, including Ethernet, Serial, and Wireless, making it ideal for integration into heterogeneous environments. This flexibility enables users to connect legacy devices to modern networks seamlessly, facilitating smoother data communication across different platforms.

The NS9215 is equipped with powerful processing capabilities, featuring an integrated processor that ensures efficient data handling. This enables the device to perform complex data tasks without compromising performance. Its high-speed connectivity options also allow for rapid data transmission, which is crucial for real-time applications in industrial settings.

Another critical characteristic of the Digi NS9215 is its reliability in harsh environments. Built to withstand extreme temperatures, humidity, and electrical interference, this device assures consistent operation even in challenging conditions. Its rugged design minimizes the risk of failure, making it suitable for deployment in various industrial environments.

Security is a top priority for the Digi NS9215. It comes with advanced security features that protect sensitive data during transmission and prevent unauthorized access. Employing encryption protocols and secure authentication methods, the NS9215 ensures that data integrity and confidentiality are maintained throughout its operation.

The user-friendly interface of the NS9215 allows for easy configuration and management. This ease of use reduces the time required for installation and setup, enabling quick deployment in field operations. Additionally, remote management capabilities enhance operational efficiency, allowing users to monitor device performance and make adjustments from anywhere.

Furthermore, the NS9215 supports extensive scalability options. As organizations grow and evolve, the ability to scale up or adapt the networking capabilities becomes essential. With its modular design, the NS9215 can easily accommodate additional devices and protocols, ensuring longevity and continued relevance in a rapidly changing technological landscape.

In conclusion, the Digi NS9215 is a robust networking device designed for a wide range of industrial applications. Its multi-protocol support, reliability, security features, user-friendly interface, and scalability make it a valuable addition to any industrial network infrastructure, delivering performance and efficiency that businesses can depend on for critical operations.
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