4.3 External Clock Mode

The digital input is clocked by external strobe, which is from Pin 19 (I_REQ) of CN2 (PCI-7200), Pin 24 of CN1 (cPCI-7200), or PIN 33 of CN1A (LPCI-7200S). The operation sequence is very similar to the Timer Pacer Trigger. The only difference is the clock source.

1.The external input strobe is generated from outside device, and goes through the Pin 19 (I_REQ) of CN2 to latch the digital input.

2.The digital input data is saved in FIFO after an I/O strobe signal is coming in.

3.The data saved in input FIFO will be transferred to main memory on your computer system directly. This is controlled by bus mastering DMA control, this function is supported by PCI.

Pin 19 of CN2

1

To Digital Input Trigger

Latch Digital Input Data

3

PC's Main Memory

2

Bus mastering Digital Input FIFO

DMA data Transfer

4.4 Handshaking

The PCI-7200 also supports a handshaking digital I/O transfer mode. That is, after input data is ready, an I_REQ is sent from an external device, and I_ACK will go high to acknowledge the data already accessed.

I_REQ & I_ACK for Digital Input

1.Digital Input Data is ready.

2.An I_REQ signal is generated for digital input operation.

3.Digital input data is saved to FIFO.

4.An I_ACK signal is generated and sent to an outside device.

5.If the FIFO is not empty and PCI bus is not occupied, the data will be transferred to main memory.

Operation Theory • 31

Page 38 Page 40
Page 39
Image 39
Intel LPCI-7200S manual External Clock Mode, Handshaking
Page 38 Page 40

LPCI-7200S specifications

The Intel LPCI-7200S is a powerful and versatile communication controller that stands out in the field of embedded computing solutions. This product is designed to cater to a wide range of applications including industrial automation, telecommunications, and transportation systems. Its robust architecture, combined with advanced features and technologies, makes it an attractive option for developers and system integrators looking for reliable performance in mission-critical environments.

One of the main features of the LPCI-7200S is its enhanced processing capability. The controller is built around Intel’s latest processor technology, enabling high-speed data handling and improved overall system response. This makes the LPCI-7200S suitable for applications that require real-time data processing and quick decision-making based on incoming information.

Additionally, the LPCI-7200S incorporates a variety of communication interfaces, ensuring seamless integration with other devices and systems. It features multiple serial ports, Ethernet interfaces, and various other connectivity options, allowing for flexible configuration depending on the needs of the application. This versatility enables users to easily connect a range of peripherals, including sensors, cameras, and other industrial equipment.

The LPCI-7200S also supports various industrial communication protocols, making it adaptable to specific market needs. With support for standards such as CAN, Modbus, and Ethernet/IP, it can facilitate efficient data exchange in diverse industrial environments.

Power efficiency is another key characteristic of the LPCI-7200S. Intel has designed this controller to operate effectively within lower power consumption thresholds, which is critical for embedded applications, particularly those that need to manage thermal output and maintain long operational life without requiring frequent maintenance.

Moreover, the LPCI-7200S boasts a rugged design, suitable for harsh environments. Its components are built to withstand extreme temperatures, vibrations, and dust, ensuring functionality even in challenging conditions. This durability makes it an ideal choice for use in outdoor applications or manufacturing settings where reliability is paramount.

Finally, with an emphasis on security, the LPCI-7200S implements advanced cybersecurity features to protect sensitive data and prevent unauthorized access. This attention to security is increasingly important in modern connected environments where the risks of cyber threats are ever-present.

In summary, the Intel LPCI-7200S is a cutting-edge communication controller that offers a blend of processing power, versatile connectivity, industrial protocol support, energy efficiency, ruggedness, and security. These characteristics make it an invaluable asset for a wide array of applications across various industries.
Top Page Image Contents