R a n s l a t i o n T a b l e B a s e r e g i s t e r

WO R K I N G W I T H T H E C P U

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R2: Translation Table Base register. .

R 2 : T r a n s l a t i o n T a b l e B a s e r e g i s t e r

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Reading from R2 returns the pointer to the currently active first-level translation table in bits [31:14] and an UNPREDICTABLE value in bits [13:0].

Writing to R2 updates the pointer to the first-level translation table from the value in bits[31:14] of the written value. Bits [13:0] SHOULD BE ZERO.

Use these instructions to access the Translation Table Base register:

MRC p15, 0, Rd, c2, c0, 0; read TTBR

MCR p15, 0, Rd, c2, c0, 0; write TTBR

The CRm and opcode_2 fields SHOULD BE ZERO when writing to R2.

Register format

Translation table base

UNP/SBZ

R 3 : D o m a i n A c c e s s C o n t r o l r e g i s t e r

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Register R3 is the Domain Access Control register and consists of 16 two-bit fields. Reading from R3 returns the value of the Domain Access Control register. Writing to R3 writes the value of the Domain Access Control register.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

D15 D14 D13 D12 D11 D10 D9

D8 D7

D6 D5

D1 D0

Access permissions and instructions

Each two-bit field defines the access permissions for one of the 16 domains (D15–D0):

00 No access: Any access generates a domain fault

01Client: Accesses are checked against the access permission bits in the section or page descriptor

10Reserved: Currently behaves like no access mode (00)

11Manager: Accesses are not checked against the access permission bits, so a permission fault cannot be generated.

Use these instructions to access the Domain Access Control register:

MRC p15, 0, Rd, c3, c0, 0; read domain access permissions

MCR p15, 0, Rd, c3, c0, 0; write domain access permissions

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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.

Digi NS9215 manual R a n s l a t i o n T a b l e B a s e r e g i s t e r, Register format

Models: NS9215