PD672X/30/32/33 — ZV Port Implementation

5.0Dedicated Socket Approach to ZV Port Implementation

Figure 2 shows a solution using the PD6722/’29/’30/’6832 Controller and the GD7XXX Super VGA controller to support a single dedicated ZV Port slot. This simple implementation does not require any external buffer or glue logic; the only limitation is that one socket must be dedicated to the ZV Port. Also, depending upon the audio controller used, a buffer may be required between the PC Card bus and the audio controller. The designer must ensure that while in R2 PC Card mode (non-ZV operation), the traffic over the bus does not cause the audio input to be driven or the video port of the VGA controller to be adversely affected. If the audio controller or VGA controller do not support a shutdown mode, buffers are required in each path. Also refer to “Layout Guidelines” on page 15 to determine if buffers are required for the video path.

Figure 2. Dedicated Socket Approach to ZV Port Implementation

 

GD7XXX

 

 

V-PORT

 

 

 

AUDIO CODEC

PD6722

 

 

PD6729

PC CARD BUS

ZV PORT PC CARD

PD6730

 

 

PD6832

 

 

PD6833

 

 

Application Note

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Intel PD672X/30/32/33 manual Dedicated Socket Approach to ZV Port Implementation
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PD672X/30/32/33 specifications

The Intel PD672X family, which includes the PD6720, PD6723, PD6724, and PD6725, represents a significant advancement in the realm of integrated circuit technologies, specifically catering to the demands of embedded systems and personal computer applications during the early 1990s. These components were primarily designed to serve as peripherals, particularly focusing on providing enhanced serial communication capabilities.

One of the primary features of the PD672X series is its integration of multiple communication protocols, including both RS-232 and RS-422 standards. This versatility provides developers with the ability to utilize these chips in a wide range of applications, from basic data transfer to more complex networking tasks. The chips come equipped with flexible baud rate configurations, allowing users to adapt the communication speed to the requirements of their specific applications.

Another standout technology associated with the PD672X series is the incorporation of advanced interrupt handling and buffer management systems. This feature enhances data throughput by allowing incoming data to be stored temporarily in buffers, enabling the CPU to process information without being interrupted constantly. This is particularly beneficial in environments where time-sensitive data processing is critical, such as in industrial automation and real-time communication applications.

The PD672X series is also characterized by its compact design and low power consumption, making it suitable for portable devices and applications where space and energy efficiency are of paramount importance. These attributes allow manufacturers to incorporate the chips into a broader array of devices without significant constraints on size or battery life.

Moreover, the Intel PD672X family is notable for its compatibility with a variety of operating systems, ensuring that developers can leverage its capabilities across different platforms. This compatibility promotes wider adoption of the technology, as it can easily integrate into existing systems without the need for extensive modifications.

In conclusion, the Intel PD672X/30/32/33 series stands out for its robust communication capabilities, flexible configurations, efficient data handling, compact size, and system compatibility. These features collectively contribute to its enduring relevance in the embedded systems market, providing developers with a reliable solution for a multitude of applications that require effective serial communication.
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