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Ref. No.
Application / Function
IC480
Source Selector & Electrical Volume
IC500
System µ-com
IC510
System µ-com Reset Control
IC520
Installer's memory
IC530
MUTE Logic
IC600
Panel mecha motor driver
IC650
Audio Ref. Supply
IC700
Internal Memory
IC701
DSP 3.3V AVR
IC702
iPod authentication IC
IC703
DIR
IC705
DAC A5V AVR
IC708
SoC 3.3V AVR
IC709
Level Shift
IC710
Level Shift
IC711
SoC
IC712
Level Shift
IC714
SDRAM (for SoC)
IC715
NOR Flash Memory (for SoC)
IC716
SoC Core 1.8V AVR
IC717
DAC D5V AVR
IC830
DSP
IC831
DAC
IC860
DAC out LPF "SW L/R"
IC861
DAC out LPF "FR/RR"
IC862
DAC out LPF "FL/RL"
Q10,12
Audio8V AVR
Q11
Switch14V
Q20,21
Backup5V AVR
COMPONENTS DESCRIPTION
Select analog source & Full source volume.
* Analog source: AM/FM, Changer, AUX. Digital source is selected by SoC. (CD, USB,
Internal memory)
Speaker out "DC-Offset" detection and protection.
(This function consists of "IC450" and "IC480".)
System control
Power management. Panel control. AM/FM, Changer, SoC control. External control & etc.
Output "L" (System µ-com Reset), when detection voltage goes below 3.6V or less.
Controls logic for muting.
Panel mecha control.
IN1, IN2: Panel mecha action
L, L : Wait
L, H : Open
Decides Audio Ref. Voltage. (4V)
Electrical Volume "PREF". DAC out L.P.F.
NAND Flash Memory 512MByte.
Series Regulator. (4.4V to 3.3V)
Issues key code for control iPod.
Audio data converter S/PDIF to I2S. (From CD Mecha)
Series Regulator. (8V to 5V)
Series Regulator. (4.4V to 3.3V)
Supply for SoC 3.3V, SDRAM, NOR Flash, NAND Flash, iPod IC, SoC 1.8V & System
µ-com to SoC control Level shift.
SoC (3.3V) to System µ-com (5V)
SoC (3.3V) to System µ-com (5V)
System on Chip.
Control CD Mecha, DSP, Internal Memory. USB Host. Audio decoding, etc.
System µ-com (5V) to SoC (3.3V)
For buffering program & audio data.
SoC fi rmware installed.
Series Regulator. (3.3V to 1.8V)
Series Regulator. (8V to 5V)
Audio Digital Signal Processor.
Analog input & Digital (I2S) input. WOW HD, TA, tone, HPF/LPF etc. control.
Audio data converter Digital (I2S) to Analog.
Output buffer and gain control.
Output buffer and gain control.
Output buffer and gain control.
Active time is "Power on".
Active time is "Power on".
Active time is "Power on".
KDC-W9537U/W9537UY
KDC-X9006U/X991
Operation / Condition / Compatibility
H, L : Close
H, H : Stop
5
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