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LC83026E

Features: • Application features- Pitch shiftThe LC83026E supports pitch shifting of ±15 quarter tone steps, or ±1 octave in scale tone units as specified by command data. This pitch shifting can be applied either to the music track or to the microphone input. It is also possible to set up p...

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SeekIC No. : 004392282 Detail

LC83026E: Features: • Application features- Pitch shiftThe LC83026E supports pitch shifting of ±15 quarter tone steps, or ±1 octave in scale tone units as specified by command data. This pitch shifting ...

LC83026E Data Sheet

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Part Number:
LC83026E
Supply Ability:
5000

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  • 1~5000
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  • Processing time
  • 15 Days
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Product Details

Description



Features:

• Application features
- Pitch shift
The LC83026E supports pitch shifting of ±15 quarter tone steps, or ±1 octave in scale tone units as specified by command data. This pitch shifting can be applied either to the music track or to the microphone input. It is also possible to set up pitch shifting of ±1 octave in arbitrary steps by setting coefficient values.
- Microphone echo
The LC83026E can apply echo processing to the input signal from the microphone A/D converter.
The echo coefficients, including amount of echo and delay time, can be set.
- Voice muting
The LC83026E provides attenuation of monaural components in the music signal. This allows CDs that include vocals to be used for karaoke. The voice muting function is turned on or off by command data transferred over the serial interface.
- Simple surround
The LC83026E implements a simple surround simulation function by adding delay components to the music signal. The LC83026E includes six sets of simple surround coefficients as preset data, and these can be selected and switched using command data transferred over the serial interface. User-original surround effects can be implemented by setting coefficients, but the algorithm is fixed.
- Versatile input mixing
The LC83026E supports hybrid mixing of digital music inputs and analog music inputs for both the left and right channels to support the processing of a wide range of disks.
• Audio inputs and outputs
- Inputs: Digital One system (stereo) A/D converters Three channels
- Outputs: Digital One system (stereo) D/A converters Two channels
- A/D converters Second-order delta-sigma modulation Three channels
- D/A converters 2* oversampling digital filters + third-order noise shaper system Two channels
• Master clock: 768fs
• External memory: Up to two 256K (64K*4 bits) external DRAMs can be used.
• Microcontroller input: Synchronous 8-bit serial data
• Power-supply voltage: 5V single-voltage supply
• Package: QFP80E


Pinout

Connection Diagram


Specifications

Parameter
Symbol
 Conditions
Ratings
Unit
Note
Maximum supply voltage
VDDmax
  
0.3 to +7.0
V
Input voltage
VIN
  
0.3 to VDD +0.3
V
Output voltage
VO1
 OSC2 output
Values up to the oscillator voltage are allowable
V
VO2
 Outputs other than OSC2
0.3 to VDD + 0.3
V
Peak output current
IOP1
 Audio interface, external RAM interface
2 to +4
mA
1
IOP2
 Microcontroller interface, P3, P4
2 to +10
mA
2
Average output current
IOA1
 Audio interface, external RAM interface: per pin
2 to +4
mA
1
IOA2
 Microcontroller interface, P3, P4: per pin
2 to +10
mA
2
IOA1
 FS384O, LRCKO, BCKO, ASO : Total
10 to +10
mA
IOA2
 DWRT, DREAD, RAS, CAS, A0 to A8, D0 to D7, SIAK,
P3, P4 : Total
10 to +10
mA
Allowable power dissipation
Pd max
 Ta = 30 to +70°C
700
mW
Operating temperature
Topr
  
30 to +70
°C
Storage temperature
Tstg
  
40 to +125
°C



Description

The LC83026E provides the audio signal processing required in karaoke systems, including pitch shift, microphone echo, voice muting, and simple surround simulation. It is a special-purpose DSP that implements karaoke processing with the addition of a single external 256-Kb DRAM. The LC83026E includes on-chip A/D and D/A converters and supports both digital and analog inputs and outputs. Its functions and characteristics can be modified to match the needs of the end product by sending coefficient data from the microcontroller over a serial interface.




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