Dear customers,
About the change in the name such as "Oki Electric Industry Co. Ltd." and
"OKI" in documents to OKI Semiconductor Co., Ltd.
The semiconductor business of Oki Electric Industry Co., Ltd. was succeeded to OKI
Semiconductor Co., Ltd. on October 1, 2008.
Therefore, please accept that although
the terms and marks of "Oki Electric Industry Co., Ltd.", “Oki Electric”, and "OKI"
remain in the documents, they all have been changed to "OKI Semiconductor Co., Ltd.".
It is a change of the company name, the company trademark, and the logo, etc. , and
NOT a content change in documents.
October 1, 2008
OKI Semiconductor Co., Ltd.
550-1 Higashiasakawa-cho, Hachioji-shi, Tokyo 193-8550, Japan
http://www.okisemi.com/en/
OKI Semiconductor
ML2302
Recording and Playback LSI with Built-in 2-Bit ADPCM2 Supported FIFO
FEDL2302DIGEST-05
Issue Date: Dec. 27, 2004
GENERAL DESCRIPTION
The ML2302 is a recording and playback LSI with built-in FIFO memories for buffering. It employs the new 2-bit
ADPCM2 algorithm in addition to conventional 4-bit OKIADPCM and 4-bit OKIADPCM2 algorithms.
The ML2302 operates at 2.7 to 3.6 V and supports a variety of applications.
FEATURES
•
Built-in two 1024-bit FIFOs
(buffering time of 32 ms when using 8 kHz sampling frequency and 4-bit ADPCM)
•
Supports five compression algorithms for recording and playback:
2-bit OKIADPCM2; 4/5/6/7-bit OKIADPCM2; 4-bit OKIADPCM; 8/16-bit straight PCM; 8-bit OKI
Nonlinear PCM
•
Source oscillation frequency 16.384 MHz
•
Sampling frequency (fsam)
4.0 to 12.8 kHz (OKIADPCM2)
4.0 to 25.6 kHz (8-bit straight PCM)
•
Supports 8-bit bus interface.
•
Built-in voice level detection function (VAC)
•
Built-in noise injection function
•
Supports external DAC interface.
•
Built-in volume control circuit
(0 dB to –44 dB: –2 dB step, –44 dB to –80 dB: –4 dB step)
•
Built-in 14-bit A/D converter and 14-bit D/A converter
•
Built-in low pass filter (LPF)
(recording side: analog filter, playback side: digital filter)
•
Built-in speaker amplifier (100 mW, 8Ω)
•
Power supply voltage : +2.7 to +3.6 V
•
Package
: 64-pin plastic TQFP (TQFP64-P-1010-0.50-K) (ML2302TB)
: 71-pin W – CSP
1/24
FEDL2302DIGEST-05
OKI Semiconductor
ML2302
BLOCK DIAGRAM
SPOUT−
SPOUT+
MOUT
MIN
LIN
SG
DAC
VR
LPF
LPF
Volume
Controller
×1
VR
SPV
DD
CB1
CB2
SG
VR
SG
TEST0
TEST2
TEST3
TEST4
TEST5
TEST6
TEST7
TEST8
TEST9
VCK
SIOCK
ADSD
DASD
AV
DD
AGND
DV
DD
DGND
VOXO
LOUT
AOUT
FIFOST
EMP
MID
FUL
FIFO
CH
D7 to 0
ADC
Analyzer
Serial Port
Synthesizer
DMA
I/F
Timing
Controller
DREQL
DACKL
IOW
IOR
XT
XT
RESET
BUSY
CBUSY
CS
D/C
WR
RD
MCU
I/F
SPIN
2/24
FEDL2302DIGEST-05
OKI Semiconductor
ML2302
PIN CONFIGURATION (TOP VIEW)
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
CS
D/C
BUSY
SIOCK
DASD
ADSD
VCK
DGND
DACKL
DREQL
IOW
IOR
VOXO
XT
XT
TEST0
D0
D1
D2
D3
D4
D5
D6
D7
DV
DD
TEST2
TEST3
TEST4
TEST5
TEST6
TEST7
TEST8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
RD
WR
DV
DD
FUL
MID
EMP
CH
CBUSY
RESET
FIFOST
DGND
VR
CB1
CB2
SPV
DD
AV
DD
(SP)
AV
DD
SG
LOUT
LIN
MOUT
MIN
AGND
TEST9
AOUT
SPIN
SPOUT–
SPOUT+
N.C.
N.C.
N.C.
AGND (SP)
N.C.: No Connection
64-pin plastic TQFP
3/24
FEDL2302DIGEST-05
OKI Semiconductor
ML2302
N.C.
RD
FUL
CH
RESET
VR
CB2
N.C.
N.C.
9
8
7
6
5
4
3
2
1
N.C.
TEST0
DV
DD
EMP
FIFOST CB1
SPV
DD
AV
DD
(SP)
AGND(SP)
XT
XT
WR
MID
CBUSY
DGND
N.C.
N.C.
N.C.
IOR
VOXO
IOW
SPOUT+ SPOUT–
SPIN
DACKL
DREQL DGND
AGND TEST9
AOUT
VCK
ADSD
DASD
LIN
MOUT
MIN
SIOCK
BUSY
D/C
D4
DV
DD
TEST2
SG
LOUT
CS
D0
D1
D2
D6
TEST3 TEST5 TEST8
AV
DD
N.C.
N.C.
D3
D5
D7
TEST4 TEST6 TEST7
N.C.
J H G F E D C B A
INDEX
71-pin W-CSP (Bottom View)
4/24
模拟电子