JVC KD-LX555R Reset, Vddt, Stanby, Vssl, Vral, Vdal,Vdar, Vrar, Vssr, Testp, Txo, Req, Iro, Vddm

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• Pin functions

Pin No

Symbol

I/O

Functions

1

/RESET

I

Hard reset input H:normal L:reset

2

MiMD

I

Micon I/F mode select input

3

/MiCS

I

Micon I/F chip select input

4

/MiLP

I

Micon I/F latch palus input

5

MiDio

I/O

Micon I/F data input/output

6

/MiCK

I

Micon I/F clock input

7

MiACK

O

Micon I/F acknowledge output

8

VDDT

-

Power supply for digital (3.3V)

9

SDo

O

Data output

10

BCKo

O

Bit output

11

LRCKo

O

LR clock output

12

SDiO

I

Data input 0

13

BCKiA

I

Bit clock input A

14

LRCKiA

I

LR clock input A

15

SDiL

I

Data input terminal 1

16

BCKiB

I

Bit clock input terminal B

17

LRCKiB

I

LR clock input terminal B

18

VDD

-

Power supply for digital (2.5V)

19

STANBY

I

Standby mode control input H:STBY L:normal

20

VSS

-

GND for digital

21

VSSL

-

GND for DAC Lch

22

VRAL

-

Reference voltage for DAC Lch

23

LO

O

DAC Lch output

24,25

VDAL,VDAR

-

Power supply for DAC Lch/Power supply for DAC Rch (2.5V)

26

RO

O

DAC Rch output

27

VRAR

-

Reference voltage for DAC Rch

28

VSSR

-

GND for DAC R ch

29

TESTP

I

Test terminal H:test mode L:normal

30

TXO

O

SPDIF output

31~34

Po0~Po3

O

General purpose output 0 ~ 3

35

VDDT

-

Power supply for digital (3.3V)

36~38

Po4~Po6

O

General purpose output 4 ~ 6

39

REQ

O

REC terminal

40

VSS

-

GND for digital

41

IRO

I/O

External interrupt input

42

VDDM

-

Internal 1Mbit SRAM power supply (2.5V)

43,44

Fi0,Fi1

I

Flug input 0,1

45

VSSM

-

GND for internal 1Mbit SRAM

46,47

Pi0,Pi1

I

General ourpose input 01

48

VSS

-

GND for digital

49,50

Pi2,Pi3

I

General purpose input 23

51

Pi4/CLCL

I

General purpose input 4/SUBQ I/F clock inputoutput

52

VDD

-

Power supply for digital (2.5V)

53

Pi5/DATA

I

General purpose input 5/SUBQ I/F data input

54

TSTiN/SFSY

I

Test terminal/SUBQ I/F flame sync input

55

Fi2/SBSY

I

Flug input 2/SUBQ I/F block sync input

56

VSSP

-

GND for VCO

57

Pdo

O

PLL phase error detection signal output

58

Vcoi

I

VCO control voltage input

59

VDDP

-

Power supply for VCO (2.5V)

60

CKo/CKi

I/O

External clock input/Clock output terminal

61

VDDX

-

Power supply for X'tal oscillator (2.5V)

62,63

Xi,Xo

I,O

Oscillator connection terminal for input/output

64

VSSX

-

GND for oscillator

(No.49793)1-51

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Contents Area Suffix KD-LX555RBA6956AN IC830, IC831 Reversible motor driver SCL SDA GND A2 GNDBR24C01AFV-W-X IC1502 Eeprom GNDGND VCC SCL SDAAddress Data DecoderVDD1 Rclk VSS3 CMP MUXQual VDD2HA13164A IC961 Regulator HD74HCT126T-X IC1500,IC1503 Buffer LA47505 IC941 Power amp Outfr AC CONT1Stby OUTFR+VCCP2 VIN4 VIN4G VIN1-A VIN1+A VCCP1 VO+VIN1 VIN1-BVIN1+A VIN1-AVCCP1 VCCP2Front OUT 2 Volume Rear OUT2 Rear OUT1 Soft Timer GND VDD Select DetectorVDD OUT Clock DataDefn DefpINA INB11 LC75878W IC601 LCD driver Aoutput Input +INPUT Output GND STB VIN Vout12 NJM4565V-X IC1572 Dual ope amp 13 NJU7241F25 IC1651 RegulatorPIN SEL TEB Rfgc Vctrlpin APC SW TE BAL 15 TA2157FN-X IC1601RF ampVCC APC on APC OFFGND OFF SEL APC LDOGvsw GND CD-RW16 TC94A14FA IC1621 DSP & DAC AVSS3 PVDD350 No.49793 Vddt ResetStanby Vssl18 UPD784217AGC208 IC962 Main micon Buzzer Power12CDAI 12CDAO19 UPD784225GK-629 IC1501 CPU Test Mode MP3 ResetMP3 STB DAC ML20 PCM1716E-X IC1571 D/A converter Block diagram Standard schematic diagrams CD servo control section LCD & Key control section KD-LX555R Electrical parts listRK104JA0J Resistor Front board CD board RK822JA0J COMP.RESISTOR RK303JA0J COMP.RESISTOR
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Manual 58 pages 46.53 Kb

KD-LX555R specifications

The JVC KD-LX555R is a feature-rich car stereo receiver that combines cutting-edge technologies with an impressive array of functionalities, making it a popular choice among car audio enthusiasts. One of the standout features of the KD-LX555R is its compatibility with various audio playback formats, including MP3, WMA, and WAV files. This versatility allows users to enjoy their favorite music from different sources without compromising on sound quality.

Equipped with a front AUX input and a USB port, the KD-LX555R facilitates convenient connectivity for external devices like smartphones and USB drives. This feature enables users to access their digital music collections seamlessly while driving. Additionally, the unit's Bluetooth capability allows for hands-free calling and wireless audio streaming, enhancing convenience and safety by minimizing distractions while driving.

The receiver boasts a sleek and modern design, featuring an easy-to-read LCD display and user-friendly controls. The customizable illumination options enable users to match the display color to their vehicle’s interior, adding a personalized touch. Its ergonomic layout ensures that drivers can adjust settings and navigate menus with minimal effort, allowing for a safer driving experience.

Sound quality is a paramount consideration for JVC, and the KD-LX555R does not disappoint. It features a powerful MOSFET amplifier, delivering robust audio performance with impressive clarity and depth across all frequencies. The inclusion of a 3-band parametric equalizer also allows users to fine-tune the audio output according to their preferences and the acoustics of their car.

For those who desire even more control over their sound, the KD-LX555R supports additional amplifiers and subwoofers through its preamp outputs. This feature empowers users to easily upgrade their sound systems and achieve the desired audio experience. Moreover, the receiver integrates seamlessly with smartphones, enabling features like music control through voice commands.

In summary, the JVC KD-LX555R is a comprehensive car audio solution that emphasizes connectivity, sound quality, and user convenience. With its modern features, robust performance, and customizable options, it caters to a wide range of audio preferences, making it a worthy addition to any car. Whether enjoying favorite tracks or making hands-free calls, the KD-LX555R delivers an exceptional in-car experience that combines technology with practicality.
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