plays to 3 min. 25 secs

DVD-V5000 DVD Player

RS-232 Command Protocol

NOTE: DVD offers only fixed speed reverse.

VCD offers 1/2 to 1/16 speed forward only. Sometimes, depending on its forward speed, VCD Multi-Speed Forward may finish several frames earlier than the target address because playback does not rely on Frame counts.

Sometimes an Auto Stop command within a Multi-Speed command misses the specific address. Depending upon when the command is sent, a playback address may be missed by a maximum of ten-Blocks.

The available address modes in each disc type are listed below:

 

 

Address Mode

DVD

 

CD

VCD

 

 

 

FR (Frame)

X

 

 

 

 

 

 

TM (Time)

X

 

 

X

 

 

 

CH (Chapter)

X

 

 

 

 

 

 

TI (Title)

 

 

 

 

 

 

 

TR (Track)

 

 

 

X

 

Execution :

 

 

 

 

 

 

String

Status Return

 

DVD player

 

MF<CR>

R<CR>

 

Play to Multi-Speed mode

 

TM0325MF<CR>

plays to 3 min. 25 secs

Pause to Multi-Speed mode

 

 

 

R<CR>

 

Pause mode

5.11Speed (DVD, VCD)

Function

:

Specifies the speed for Multi-Speed playback

Format

:

Integer SP

Explanation : The command rewrites the contents of the Speed Register and returns the completed status message. The current mode of the player remains the same.

The speed parameter indicates the number of fields per second. The range is 0 through 90 with a default value of 15. The relationship between the integer, speed parameter and the actual speed of the player is as follows:

- 20

Page 27
Image 27
Pioneer RS-232C manual Speed DVD, VCD, plays to 3 min. 25 secs

RS-232C specifications

The Pioneer RS-232C is a significant component in the realm of communication technology, especially known for its application in serial communications. Initially introduced in the 1960s as part of the EIA-232 standard, RS-232C has evolved through various iterations to become a foundational interface for connecting data communication equipment (DCE) with data terminal equipment (DTE). This article outlines its main features, technologies, and characteristics.

One of the hallmark features of RS-232C is its ability to facilitate point-to-point communication. It allows for a direct link between two devices, making it suitable for a variety of applications, including modems, printers, computers, and other peripherals. The RS-232C interface typically uses a 25-pin connector, although a 9-pin variant is also common in many modern devices. This interface is based on serial communications, where bits are sent sequentially over a single channel, leveraging fewer wires compared to parallel communication methods.

In terms of technology, RS-232C operates primarily at voltage levels of +12V to -12V, which provide the necessary signaling for data transmission. The standard supports baud rates ranging from 300 to 115200 bps, accommodating various data transfer speeds depending on the needs of the hardware involved. RS-232C defines various electrical characteristics and timing requirements, ensuring robust performance over relatively short distances, typically up to 15 meters, depending on the baud rate.

Another essential aspect of the RS-232C standard is its use of asynchronous communication, allowing devices to transmit data without having to synchronize their clocks. Each data packet typically consists of a start bit, a predefined number of data bits (usually 7 or 8), an optional parity bit for error-checking, and one or more stop bits. This method allows for error detection and ensures data integrity during transmission.

Despite its age, the RS-232C interface remains relevant, especially in industrial applications, instrumentation, and legacy systems. Its simplicity, low cost, and widespread acceptance make it a versatile choice for connecting various devices, even in a world increasingly dominated by USB and other modern interfaces.

In conclusion, the Pioneer RS-232C is a remarkable testament to the enduring nature of serial communication technology. Its straightforward design, reliability, and ease of integration continue to make it a staple in numerous applications, underscoring its significance in the landscape of data communication.