Pin No.

Pin Name

I/O

 

Description

 

 

 

 

 

 

 

 

47

UNIREQ

O

Data request signal output terminal (for SONY bus)

“H”: request on Not used (open)

48

UNICKIO

I/O

Serial clock signal input from the master controller (IC501) or serial clock signal output to the

SONY bus interface (IC701) and master controller (IC501) (for SONY bus)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

49

UNISI

I

Serial data input from the SONY bus interface (IC701)

 

 

 

 

 

 

 

 

50

UNISO

O

Serial data output to the SONY bus interface (IC701)

 

 

 

 

 

 

 

51

MD-CKO

O

Serial data transfer clock signal output to the CXD2652AR (IC301) and CXA2523AR (IC302)

 

 

 

 

 

 

 

52

MD-SI

I

Reading serial data signal input from the CXD2652AR (IC301)

 

 

 

 

 

 

 

 

 

 

53

 

NCO

O

Not used (open)

 

 

 

54

 

SENS

I

Internal status (SENSE) input from the CXD2652AR (IC301)

 

55

CC-XINT

I

Interrupt status input from the CXD2652AR (IC301)

 

 

 

 

 

 

 

 

 

56

LIMIT-IN

I

Detection input from the sled limit-in detect switch

 

 

The optical pick-up is inner position when “L”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

57

EJT-KEY

I

Eject request signal input terminal

“L”: eject on

Not used (fixed at “H”)

 

 

 

 

 

 

 

58

ERROR-PWM

O

PWM error monitor output terminal (C1and ATER is output when test mode)

Not used (open)

 

 

 

 

 

 

59

MD-RST

O

Reset signal output to the PCM1718E (IC101), CXD2652AR (IC301) and BH6511FS (IC303)

“L”: reset

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

BU-IN

I

Battery detect signal input from the SONY bus interface (IC701) and battery check circuit

“H”: battery on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

61

BUS-ON

I

SONY bus on/off control signal input from the master controller (IC501) “L”: bus on

 

 

 

 

 

 

 

62

 

SQSY

I

Subcode Q sync (SCOR) input from the CXD2652AR (IC301)

 

 

“L” is input every 13.3 msec Almost all, “H” is input

 

 

 

 

 

 

 

 

 

 

 

 

 

63

 

C-SW

I

Inputs the disc loading start or disc eject completion detect switch detection signal

 

“L”: When start or eject completed of the disc loading operation

 

 

 

 

 

 

 

 

 

 

 

64

MD-LAT

O

Serial data latch pulse signal output to the CXD2652AR (IC301) and CXA2523AR (IC302)

65

MD-ON

O

Power supply on/off control signal output of the MD mechanism deck section main power supply

“H”: power on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66

DEEMP

O

Emphasis on/off control signal output to the PCM1718E (IC101) “H”: emphasis on

 

 

 

 

 

 

67

A-MUTE

O

Audio muting on/off control signal output terminal

 

 

 

 

 

 

 

 

 

 

68

 

NCO

O

Not used (open)

 

 

 

 

 

 

 

 

69

TSTCKO

O

Output of clock signal for the test mode display Not used (open)

 

 

 

 

 

 

70

TSTSO

O

Output of data for the test mode display Not used (open)

 

 

 

 

 

 

 

 

71

TSTMOD

I

Setting terminal for the test mode

“L”: test mode, “H”: normal mode

 

72

 

VCC

—

Power supply terminal (+5V)

 

 

 

 

 

 

 

 

 

 

 

73

 

NIL

I

Not used (fixed at “H”)

 

 

 

 

 

 

 

 

 

74 to 77

TOUT0 to TOUT3

O

Output of the 4⋅ 8 matrix test keys

Not used (open)

 

 

 

 

 

 

78 to 80

TIN0 to TIN2

I/O

Input of the 4⋅ 8 matrix test keys (“L” is always output, except in test mode)

Not used (open)

 

 

 

 

 

 

 

 

 

*1 Loading motor (M903) control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

 

 

IN

 

 

OUT

 

 

BRAKE

 

 

STOP

 

 

 

 

 

 

 

 

 

 

 

 

Terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOAD (pin 6)

 

“H”

 

“L”

 

“H”

 

“L”

 

 

EJECT (pin 7)

 

“L”

 

“H”

 

“H”

 

“L”

45

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Sony MDX-C6500RV service manual Unireq, Unisi, Uniso, Md-Si, Ejt-Key, Bu-In, Bus-On, Tstso, Nil, OUT Brake Stop
Page 44 Page 46

MDX-C6500RV specifications

The Sony MDX-C6500RV is an advanced car audio receiver that combines cutting-edge technology with a user-friendly interface to enhance your driving experience. Designed for audiophiles and casual listeners alike, this model supports a plethora of formats and offers a range of features that ensure high-quality sound reproduction.

One of the key features of the MDX-C6500RV is its compatibility with the MiniDisc format, which allows for high-quality digital audio recording and playback. This makes it an ideal choice for music enthusiasts who appreciate finer sound details. The receiver also supports traditional CD playback, giving users the flexibility to enjoy their favorite albums and compilations effortlessly.

Equipped with a built-in FM/AM tuner, the MDX-C6500RV offers access to a vast array of radio stations. The tuner is enhanced with features such as RDS (Radio Data System), which provides additional information like station name and song details, making it easier to find your desired content.

The MDX-C6500RV comes with a powerful 52 Watts x 4 amplifier, ensuring that your music plays at optimal levels without distortion. It also features customizable equalizer settings with multiple presets, allowing users to tailor the sound profile to their unique listening preferences.

Another standout characteristic is the unit's front-facing auxiliary input, which enables direct connections to external devices such as smartphones and portable media players. This enhances versatility and allows for seamless integration of modern devices into your audio system. Additionally, the MDX-C6500RV is equipped with a USB port for convenient playback of digital files.

In terms of connectivity, the MDX-C6500RV includes options for both Bluetooth and wired integration, supporting hands-free calling and audio streaming. This ensures that drivers can stay connected and focused on the road while enjoying their favorite tracks.

The display is easy to read, featuring a vibrant backlight that ensures visibility even in low-light conditions. The user interface is intuitive, allowing for quick navigation through various functions and settings.

In summary, the Sony MDX-C6500RV blends functionality with high-performance audio features. With its MiniDisc support, powerful amplifier, customizable sound settings, and modern connectivity options, it stands out as a premium choice for car audio enthusiasts looking to enhance their in-car entertainment experience.
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