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LC83025E 데이터시트 PDF
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PDF 형식의 LC83025E 자료 제공
| 부품번호 | LC83025E 기능 |
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| 기능 | Digital Signal Processor for Karaoke Products | ||
| 제조업체 | Sanyo Semicon Device | ||
| 로고 |  |
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전체 15 페이지수
Ordering number : EN4977A
CMOS LSI
LC83025E
Digital Signal Processor
for Karaoke Products
Overview
The LC83025E is a special-purpose karaoke DSP that
implements the signal processing required by karaoke
systems, including pitch shift, microphone echo, voice
muting and simple surround, with only a single 256Kb
external DRAM. Since the LC83025E includes built-in
A/D and D/A converters, it can also handle analog inputs
and outputs in addition to digital inputs and outputs. The
LC83025E uses serial transfer of coefficient data from a
microcontroller to handle changes in functions and
characteristics required for each application.
Features
• Applications
— Pitch shift
The LC83025E can shift the music pitch or the
microphone pitch by ±15 steps in 1/4 interval steps,
or ±1 octave in scale tone steps according to
command data sent from the microcontroller.
Furthermore, the pitch can be changed up to ±1
octave in arbitrary steps by setting internal
coefficients.
— Microphone echo
The LC83025E implements echo processing for the
signal input from the microphone A/D converter.
The amount of echo, the delay time and other
parameters can be changed by setting coefficients.
— Voice mute
The LC83025E implements processing that removes
monaural signal components included in the music
signal. This allows CDs with vocals to be used as
karaoke CDs. Command data is used to turn the
voice mute function on or off.
— Simple surround
The LC83025E implements a simple surround
function by adding delayed components to the music
signal. The LC83025E includes six sets of simple
surround coefficients as built-in preset data. These
values can be switched by sending command data.
Applications can implement their own original
surround effects by setting the coefficients.
However, the algorithm itself is fixed.
— Flexible input mixing
The LC83025E supports hybrid mixing of digital
and analog left and right channel song inputs, and
thus can handle a wide range of disk processing
configurations.
• Audio inputs and outputs
— Inputs: Digital - One system (stereo)
A/D converter - Three channels
— Outputs: Digital - One system (stereo)
D/A converter - Two channels
— A/D converter
Second order ∆∑ modulation - Three channels
— D/A converter
4× oversampling digital filters
plus second order noise shaper
plus 5-bit PWM system - Two channels
• Master clock: 768 fs
• External memory: Up to two 256K (64K × 4-bit)
DRAMs can be used
• Microcontroller input: Synchronous 8-bit serial data
• Supply voltage: 5 V single-voltage
• Package: QFP80E
Package Dimensions
unit: mm
3174-QFP80E
[LC83025E]
SANYO: QFP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
62896HA (OT)/63095HA (OT) No. 4977-1/15
 
LC83025E
Pin Functions
Pin No.
Symbol
[Control pins]
13 OSC1
14 OSC2
10 FS384I
11 SELC
18 SAIF
19 SAOF
17 RES
25 to 21
TEST5 to
TEST1
20 TEST6
48 P0
50, 49
P2, P1
51 P3
52 P4
[External memory interface]
79 RAS
80 CAS
1 DREAD
2 DWRT
68 to 60
A8 to A0
69 to 71,
74 to 78
D7 to D0
[Audio interface]
9 LRCKI
5 LRCKO
8 BCKI
4 BCKO
6 FS384O
7 ASI
3 ASO
35 ADL1
33 ADL2
37 ADL3
40 ADR1
38 ADR2
42 ADR3
45 ADM1
43 ADM2
47 ADM3
28 DAOL
31 DAOR
[Microcontroller interface]
55 SIRQ
59 SIAK
56 SI
57 SICK
58 SRDY
I/O Function
I Crystal oscillator connection (768 fs)
O Crystal oscillator connection (768 fs)
I 384 fs input (Apply a clock that is equal to the OSC1/OSC2 768 fs clock divided by 2.)
I Audio clock source switching (High: Fixes FS384I as the clock)
I Digital audio input mode switching (Low: backward packed, High: forward packed)
I Digital audio output mode switching (Low: 48 fs, High: 64 fs)
I Reset
I Test (Must be tied to ground in normal operation.)
O Test (Must be left open in normal operation.)
I Coefficient transfer mode switching
I Initial operating mode setting (This pin should be held high in normal operation.)
O Microphone signal present (low output) or absent (high output) indication output
O Music signal present (low output) or absent (high output) indication output
O RAS signal output
O CAS signal output
O External memory read signal output
O External memory write signal output
O Address outputs
I/O Data I/O (Normally, only D3 to D0 are used.)
I ASI L/R clock input (1 fs)
O ASO L/R clock output (1 fs)
I ASI bit clock input (32 fs or higher)
O ASO bit clock output (48 fs or 64 fs)
O ASO 384 fs output
I Digital audio data input (MSB first, 16 bits)
O Digital audio data output (MSB first, backward packed, 16 bits)
I A/D converter input (left channel)
O A/D converter output (left channel)
O A/D converter output (left channel)
I A/D converter input (right channel)
O A/D converter output (right channel)
O A/D converter output (right channel)
I A/D converter input (microphone)
O A/D converter output (microphone)
O A/D converter output (microphone)
O D/A converter output (left channel)
O D/A converter output (right channel)
I Serial input request signal input
O Output indicating serial input execution in progress
I Serial data input from the control microcontroller (8-bit serial data)
I SI transfer clock input
I Ready signal input from the control microcontroller that indicates that serial data input has completed
Continued on next page.
No. 4977-4/15
4페이지 
LC83025E
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Output voltage
Input voltage
Peak output current
Average output current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VDD max
Conditions
VO1 OSC2 output
VO2
VIN
IOP1
IOP2
IOA1
IOA2
ΣIOA1
ΣIOA2
ΣIOA3
Pd max
Topr
Tstg
Pins other than OSC2
Audio interface, external RAM interface
Microcontroller interface, P3, P4
Audio interface, external RAM interface: per pin
Microcontroller interface, P3, P4: per pin
Total for FS384O, LRCKO, BCKO, and ASO
Total for DWRT, DREAD, RAS, CAS, A3 to A8
and D0 to D7
Total for A0 to A2, SIAK, P3 and P4
Ta = –30 to +70°C
Ratings
–0.3 to +7.0
Allowed up to the
oscillator voltage.
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
–2 to +4
–2 to +10
–2 to +4
–2 to +10
–10 to +10
–30 to +30
–10 to +10
700
–30 to +70
–40 to +125
Unit Note
V
V
V
V
mA 1
mA 2
mA 1
mA 2
mA
mA
mA
mW
°C
°C
Allowable Operating Ranges
at Ta = –30 to +70°C, all VDD = 4.75 to 5.25 V, all VSS = 0 V unless otherwise specified
Parameter
Symbol
Conditions
min typ max Unit Note
Operating supply voltage
Input high level voltage
Input low level voltage
Instruction cycle time
[External Clock Input Conditions]
VDD
VIH1
VIH2
VIH3
VIL1
VIL2
VIL3
tCYC
Audio interface, external RAM interface
P0 to P2, SELC, SAIF, SAOF, TEST1 to TEST5
RES, OSC1, microcontroller interface
Audio interface, external RAM interface
P0 to P2, SELC, SAIF, SAOF, TEST1 to TEST5
RES, OSC1, microcontroller interface
4.75
2.4
0.7 VDD
0.75 VDD
58
5.25
0.8
0.3 VDD
0.25 VDD
59.11
V
V
V
V
V
V
V
ns
4
5
6
4
5
6
Frequency
fEXT
Pulse width
tEXTH
tEXTL
Rise time
tEXTR
Fall time
tEXTF
[Self-Excitation Oscillation Conditions]
Related to the FS384I pin. Shown in Figure 1.
max: 44.1 kHz × 384 × 1.005
min: 44.1 kHz × 384 × 0.995
16.85
23
23
17.01
9
9
MHz
ns
ns
ns
ns
Oscillator frequency
fOSC
OSC1 and OSC2: shown in Figure 2.
44.1 kHz × 768 × ± 0.1%
33.84
33.90 MHz
Oscillator stabilization period
[Audio Data Input Conditions]
fOSCS Shown in Figure 3.
100 ms
Transfer bit clock period
Transfer bit clock pulse width
Data setup time
Data hold time
[Serial Input Clock Conditions]
tBCYC
tBCW
tS
tH
Related to the BCKI and ASI pins. Shown in Figure 4.
354
100
70
70
ns
ns
ns
ns
Serial clock period
Serial clock pulse width
Data setup time
Data hold time
SRDY hold time
SRDY pulse width
[DRAM Input Conditions]
tSCYC
tSCW
tSS
tSH
tSYH
tSYW
Related to the microcontroller interface. Shown in
Figure 5. (Related to the SICK, SI and SRDY pins.)
480
200
70
70
200
200
ns
ns
ns
ns
ns
ns
Input data setup time
Input data hold time
tDSI Related to external DRAM data input. Shown in Figure 6.
tDHI (Related to the CAS and D0 to D7 pins.)
20
0
ns
ns
No. 4977-7/15
7페이지 | |||
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관련 데이터시트
| 부품번호 | 상세설명 및 기능 | 제조사 |
| LC83025 | Digital Signal Processor for Karaoke Products | Sanyo Semicon Device |
| LC83025E | Digital Signal Processor for Karaoke Products | Sanyo Semicon Device |
| DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |