M E M O R Y C O N T RO L L E R

Low-power operation

Power-saving modes that dynamically control SDRAM clk_en.

Dynamic memory self-refresh mode supported by a power management unit (PMU) interface or by software.

Controller supports 2K, 4K, and 8K row address synchronous memory parts; that is, typical 512 MB, 256 MB, and 16 Mb parts with 8, 16, or 32 DQ bits per device.

A separate AHB interface to program the memory controller. This enables the memory controller registers to be situated in memory with other system peripheral registers.

Locked AHB transaction support. Support for all AHB burst types. Little and big endian support.

Note: Synchronous static memory devices (synchronous burst mode) are not supported.

L o w - p o w e r o p e r a t i o n

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In many systems, the contents of the memory system have to be maintained during low-power sleep modes. The processor provides two features to enable this:

Dynamic memory refresh over soft reset

A mechanism to place the dynamic memories into self-refresh mode Self-refresh mode can be entered as follows:

1Set the SREFREQ bit in the Dynamic Memory Control register.

2Poll the SREFACK bit in the Status register.

Note: Static memory can be accessed as normal when the SDRAM memory is in self- refresh mode.

Low-power SDRAM deep- sleep mode

Low-power SDRAM partial array refresh

The memory controller supports JEDEC low-power SDRAM deep-sleep mode. Deep- sleep mode can be entered by setting the deep-sleep (DP) bit in the Dynamic Memory Control register. The device is put into a low-power mode where it is powered down and no longer refreshed. All data in the memory is lost.

The memory controller supports JEDEC low-power SDRAM partial array refresh. Partial array refresh can be programmed by initializing the SDRAM memory device appropriately. When the memory device is put into self-refresh mode, only the memory banks specified are refreshed. The memory banks that are not refreshed lose their data contents.

204Hardware Reference NS9215

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Digi NS9215 manual W p o w e r o p e r a t i o n
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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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