PD672X/30/32/33 — ZV Port Implementation

1.0Introduction

The PD6710, PD6722, and PD6729 are single-chip PCMCIA interface controllers capable of controlling one or two PCMCIA or compact Flash sockets, respectively. They are designed for use in embedded applications and notebook systems where reduced form factor and low power consumption are critical design objectives.

Current typical application examples include:

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Routers

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Integrated access devices

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Access network servers

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DSLAMs

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PBXs

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Terminal servers

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Vending machines

■ Point of Sale terminals

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Portable handheld systems

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Navigation systems

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Data acquisition systems

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Measurement equipment

■Settop boxes

With the PD6710, a complete single-socket PCMCIA solution with power-control circuitry can occupy less than 1.5 square inches (10 square centimeters) of board space. Similarly, with the PD6722 and PD6729, a complete dual-socket PCMCIA solution with power-control circuitry can occupy less than 2 square inches (13 square centimeters) of board space.

The PD67XX controllers are completely compatible with the standards of PCMCIA (Personal Card Memory International Association) Release 2.0 Standard as well as JEIDA (Japan Electronic Industry Development Association) Version 4.1 Standard (PD6729 is compliant with the PCI 2.1 Specification. The PD67XX controllers also offer special power-saving features such as Automatic Low-power Dynamic Mode and Suspend Mode. Both controllers are true mixed-voltage devices that can operate at +5 volts, +3.3 volts, or a combination of these at various interfaces. The controllers have full internal buffering and require no additional circuitry to interface to the ISA (or ISA-like) Bus for the PD6710 and PD6722, and the PCI Bus for PD6729, or to PCMCIA sockets.

Note: In this document, PD67XX represents the PD6710, PD6722, and PD6729.

Application Note

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Intel PD672X/30/32/33 manual Introduction
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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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