A E S D A T A E N C R Y P T I O N / D E C R Y P T I O N M O D U L E

AES DMA buffer descriptor

Block diagram

From System Memory

Ch 1 Ext DMA

Source

 

 

 

 

 

 

 

Mode and Control

 

 

 

 

 

 

 

IV

 

 

 

 

 

 

 

Expanded Key

 

 

 

 

 

Key

 

 

 

 

 

Expander

Data In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIFO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AES

Engine

Data Out

To System Memory

Ch 1 Ext DMA

Destination

FIFO

Data blocks

The AES module works on 128-bit blocks of data. This table shows the performance

 

per each 128-bit block, depending on the key size:

 

 

 

 

 

 

 

 

 

 

 

Key size

 

 

 

 

 

 

 

 

 

Characteristic

128

192

256

 

 

 

 

 

 

 

 

Number of cycles

44

52

60

 

 

 

 

 

 

 

 

Latency (cycles)

44

52

60

 

 

 

 

 

 

 

 

Throughput (bits/cycles)

~2.90

~2.46

~2.13

 

 

 

 

 

 

 

 

Throughput @ 75 MHz (bytes/sec)

~27.19

~23.06

~19.97

 

 

 

 

 

 

 

A E S D M A b u f f e r d e s c r i p t o r

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The AES DMA buffer descriptor is the same as the external DMA buffer descriptor, with the exception of the control bits — AES op and AES control.

356Hardware Reference NS9215

Page 356
Image 356
Digi NS9215 manual S D M a b u f f e r d e s c r i p t o r, Block diagram, Data blocks, Key size Characteristic 128 192 256

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.