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LC83026E Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC83026E
Beschreibung Digital Signal Processor for Karaoke Systems
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 16 Seiten
LC83026E Datasheet, Funktion
Ordering number : EN5663
CMOS IC
LC83026E
Digital Signal Processor for Karaoke Systems
Overview
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.
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
Package Dimensions
unit: mm
3174-QFP80E
[LC83026E]
SANYO: QIP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
63097HA(OT) No. 5663-1/16






LC83026E Datasheet, Funktion
LC83026E
Continued from preceding page.
Parameter
Symbol
Conditions
[External Clock Input Conditions]
Frequency
fEXT
Pulse width
fEXTH
fEXTL
Rise time
tEXTR
Fall time
tEXF
[Self-Excited Oscillation Conditions(crystal oscillator)]
Oscillator frequency
fOSC
Oscillator stabilization period
[Audio Data Input Conditions]
Transfer bit clock period
Transfer bit clock pulse width
Data setup time
Data hold time
[Serial I/O Clock Conditions]
Serial clock period
Serial clock pulse width
Data setup time
Data hold time
SRDY hold time
SRDY pulse width
[DRAM Input Conditions]
Input data setup time
Input data hold time
tOSCS
tBCYC
tBCW
tS
tH
tSCYC
tSCW
tSS
tSH
tSYH
tSYW
tDSI
tDHI
Related to the FS384I pin. See Figure 1.
maximum: 44.1 kHz × 384 × 1.005
minimum: 44.1 kHz × 384 × 0.995
OSC1 and OSC2. See Figure 2.
44.1 kHz/48 kHz × 768 ±0.1%
See Figure 3.
Related to BCKI. See Figure 4.
Related to the microcontroller interface.
See Figure 5. (Related to SICK, SI, and
SRDY.)
Related to external DRAM data input. See
Figure 6. (Related to CAS and D0 to D7.)
Ratings
min typ
16.85
23
23
33.84
354
100
70
70
480
200
70
70
200
200
20
0
Unit Notes
max
17.01
9
9
MHz
ns
ns
ns
ns
40.55 MHz
100 ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Electrical Characteristics 1 at Ta = –30 to +70°C, all VDD = 4.75 to 5.25 V, all VSS = 0 V unless otherwise specified
Parameter
Input high-level current
Input low-level current
Output high-level voltage
Output low-level voltage
Output off leakage current
Input and output capacitance
[Audio Data Output Timing]
Output data hold time
Output data delay time
Symbol
IIH1
IIH2
IIH3
IIL1
IIL2
IIL3
VOH1
VOH2
VOL1
VOL2
IOFF
CIO
Conditions
SELC, SAIF, SAOF,
VIN = VDD (Input pins with pull-down
resistors)
P0 to P2, VIN = VDD (Nch transistor OFF)
Other input-only pins
RES, VIN = VSS (Input pins with pull-up
resistors)
P0 to P2, VIN = VSS
Other input-only pins
IOH = –0.4 mA
IOH = –50 µA
IOL = 2 mA
IOL = 10 mA
VO = VSS, VDD
min
–250
–10
–10
4.0
VDD –1.2
–40
Ratings
typ
100
–100
4.98
4.997
0.065
0.32
Unit Notes
max
250 µA 8
10 µA
10 µA
µA 8
µA
µA
V 1, 8
V 2,3,8
0.4 V 1, 8
1.5 V 2,3,8
+40 µA
10 pF
tOH BCK0 and ASO. See Figure 7.
tOD
–30 ns 7
50 ns 7
Continued on next page.
No. 5663-6/16

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LC83026E pdf, datenblatt
LC83026E
No. 5663-12/16

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