Intel PD672X/30/32/33 manual Typical ZV Port Implementation

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PD672X/30/32/33 — ZV Port Implementation

Note that ZV Port implementation is likely to vary depending on the platform; the Socket Services software must be customized to address these variances. Controlling the OE (output enable) inputs of the external buffers depends upon specific hardware design and software needs to be aware of specifics, such as the I/O Port addresses.

When the PC Card Multimedia mode is used, Intel recommends that the ZV Port pins be connected as shown in Tables 1–3 for the various controller devices. The pin assignments provided in the tables ensure signal integrity and compliance with the ZV Port standard. By disabling or powering down the ZV Port, this connection between the GD7XXX and the PC Card bus does not interfere with the normal (non-multimedia) PC Card bus operation.

When the ZV Port is disabled, VPM (Video Port Manager) software or other client drivers must program the VGA controller so as not to adversely affect the video port of the VGA controller. A bus switch, turned off during normal PC Card bus operation, may be needed to reduce the load on the PC Card bus.

Figure 1. Typical ZV Port Implementation

 

TV

LCD

CRT

 

 

 

 

 

 

DRAM

 

 

 

 

SPEAKERS

 

 

 

 

 

 

 

 

 

 

 

 

 

ANALOG

 

 

 

 

 

 

 

 

 

ENCODER

 

 

AMP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BUS

 

 

 

AUDIO

 

 

 

 

 

HOST

 

 

 

 

 

 

 

 

GD7XXX

 

 

CODEC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

 

4 PCM

SLOT

4

 

 

 

 

 

 

CARD

AUDIO

 

 

 

 

 

AUDIO

PCM

 

 

 

ZV PORT

 

 

 

 

 

INPUT

 

 

AUDIO

 

 

 

 

CONVERTER

 

 

 

(Video)

 

 

 

 

 

 

PC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PD6722

 

 

 

 

PC CARD

 

 

 

PD6729

 

 

 

 

VIDEO

 

 

 

 

 

 

INTERFACE

 

 

PD6730

 

 

 

 

DECODER

VIDEO

 

 

 

 

 

 

 

 

PD6832

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NTSC/PAL

 

PD6833

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RF SIGNAL

 

 

 

 

 

 

19

VIDEO & CONTROL

 

 

MOTHERBOARD

 

 

 

 

PC CARD

 

 

Application Note

 

 

 

 

 

 

 

7

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Contents PD672X/30/32/33 ZV Port Implementation Application Note Contents PD672X/30/32/33 ZV Port Implementation Introduction Zoomed Video ZV OverviewTypical ZV Port Implementation Typical ZV Port Implementation PD672X/30/32/33 ZV Port Implementation Dedicated Socket Approach to ZV Port Implementation Dedicated Socket Approach to ZV Port ImplementationBuffer Implementation for Audio DAC Buffer Implementation for Audio DACComments ZV Port Implementation for Socket a and BPC Card, ZV Port, and PD6722 Pin Assignment Sheet 1 PC Card ZV Port Pin PD6722SPC Card, ZV Port, and PD6729 Pin Assignment Sheet 1 PC Card, ZV Port, and PD6722 Pin Assignment Sheet 2PC Card ZV Port Pin PD6729S Comments PC Card ZV Port Pin PD6730 or PC Card, ZV Port, and PD6729 Pin Assignment Sheet 2PC Card, ZV Port, and PD6730/’6832 Pin Assignment Sheet 1 PC Card ZV Port Pin PD6729SPD6832 Comments PC Card, ZV Port, and PD6730/’6832 Pin Assignment Sheet 2Pin Layout Guidelines

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.