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Sony DHC-MD555 Operation Manual

Control i & md walkman link
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NEW TECHNICAL THEORY
FOR SERVICING
DHC-MD555
CONTROL I & MD WALKMAN LINK
OPERATION MANUAL
MINI Hi-Fi COMPONENT SYSTEM
– 1 –

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Summary of Contents for Sony DHC-MD555

  • Page 1 NEW TECHNICAL THEORY FOR SERVICING DHC-MD555 CONTROL I & MD WALKMAN LINK OPERATION MANUAL MINI Hi-Fi COMPONENT SYSTEM – 1 –...

  • Page 2: Table Of Contents

    Contents Section Title Page 1. CONTROL I 1-1. Name ........................................3 1-2. Scope of Application ....................................3 1-3. Compatibility ......................................3 1-4. Basic Concept ......................................3 1-5. Shape of Terminal ....................................4 1-6. Description of Terminals ..................................6 (1) I2C Bus Communication Terminal ................................6 (2) Power Supply Terminal .....................................

  • Page 3: Control I

    1-2. SCOPE OF APPLICATION The CONTROL I terminal has been adopted from system stereos DHC-MD555, DHC-MD777, and JMD-7. Connecting by the PC connection kit PCLK-PX1 and bi-directional remote commander RM-IA10K (J model only) to the CONTROL I terminal facilitates basic operations of the system stereo, music editing from CD to MD, and title inputs to MDs.

  • Page 4: Shape Of Terminal

    1-5. SHAPE OF TERMINAL The CONTROL I terminal uses a MINI DIN 6-pin connector. This connector is used for DOS/V PC keyboards and PS/2 mouse, but it has no compatibility with the communication format. However, taking into account connection to this connector by mistake, power and GND pin positions are made the same to prevent incorrect operations.
  • Page 5 The terminal for the earlier mentioned optional TC is of the 5-pin type used for system cables, etc. The serial data of the SDA terminal uses the same signal format as CONTROL I. Fig. 1-2. Optional TC Terminal Table 1-2. Function of Optional TC Terminals Terminal Name Function Serial data input/output terminal...

  • Page 6: Description Of Terminals

    In the communication between microprocessors inside the current system stereo, the DATA line is expanded to four lines based on the AU BUS, and a 6-line Y BUS with additional CLK and BUSY lines is used as the internal bus. System stereos after DHC-MD555, DHC-MD777, and JMD-7 however adopt the Phillips “I2C format”...

  • Page 7: Power On Terminal

    (3) Power ON terminal POWER ON:6 pin Input port for turning on the power of the system stereo from an external equipment when the system stereo is in the STAND BY state. It is connected to the main microprocessor (microprocessor for controlling the power supply)of the system stereo. The POWER input terminal of the main microprocessor is pulled up to H by the VDD.

  • Page 8: Md Walkman Link

    When the MD Walkman and system components such as DHC-MD555 are connected using the link cable (MDLK-PX1) for MD Walkman, analog synchro recording and automatic track number setting can be performed using the headphone signal output from the MD Walkman.

  • Page 9: Transmission Of Track Name Data

    (4) Transmission of Track Name Data If the song being recorded has a name, press the NAME EDIT button of DHC-MD555 to edit or copy the name. The track name cannot be recorded automatically for copyright reasons. *Maximum number of characters transmittable Up to 255 bytes (255 ASCII characters) can be transmitted for one track.

  • Page 10: Link Cable

    2-2. LINK CABLE (1) Terminal The link cable consists of the following terminals. (Refer to Fig. 2-2.) Table 2-1. Function of Terminals Terminal Name Function Right channel audio terminal. Left channel audio terminal. – 1/2 VDD Grounding terminal for remote control. (A. GND) –...

  • Page 11: Data Signal

    (2) Data signal (DATA:6 pin) Bi-directional communication is performed between the MD Walkman and system controller of the system stereo. 500uS Fig. 2-3. Data Signal Liquid crystal display data is periodically output from the system controller of the MD Walkman. To copy the track name data, the data transmission request command is output to the DATA terminal from the system controller of the system stereo, and the track name data is transmitted from the system controller of the MD Walkman.
  • Page 12 Sony Corporation 99A09074-1D Printed in Japan © 1999. 1 9-922-977-21 Home A&V Products Company Published by Quality Assurance Dept. – 12 – (Shinagawa)

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