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PDF AK7719B Data sheet ( Hoja de datos )
| Número de pieza | AK7719B | |
| Descripción | Low Power DSP | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK7719B]
AK7719B
Low Power DSP for Voice and Audio Processing
1. General Description
The AK7719B is a highly integrated digital signal processor (DSP) with five digital interface ports.
The built-in asynchronous sample rate converter (SRC) enables flexible connectivity in various
system configurations. AKM’s DSP core is optimized for both narrowband and wideband voice
processing, as well as full bandwidth digital audio processing. An integrated clock generator for the
DSP master clock eliminates the need for external clocks. The RAM-based DSP can be
programmed for user requirements. The AK7719B is housed in a 30-pin CSP package. It is a very
low power device, suitable for mobile applications.
2. Features
□ Embedded DSP
- Flexible programming with built-in program and data memories
- Hardware accelerator
- Word length: 24-bits (Data RAM 24-bit floating point)
- Multiplier 20 x 20 40-bits (double precision available)
- Divider 20 / 20 20-bits
- ALU: 44-bit arithmetic operation (with 4-bit overflow margin)
24-bit floating point arithmetic and logic operation
- Program RAM: 4096w x 36-bits
- Coefficient RAM: 2048w x 20-bits
- Data RAM: 2048w x 24-bits (24-bit floating point)
- Offset Register: 32w x 15-bits
- Delay RAM: 16384w x 24-bits(24-bit floating point)
- 5625 steps at 16kHz sampling rate, 1875 steps at 48kHz sampling rate
- Internal clock generator
□ Audio Interface Format
- Left justified, PCM, I2S,
- 16/24bit linear
- Sampling rate 8kHz ~ 48kHz
- Up/Down Sampling Rate Converter: Port#1 (8kHz ↔ 16kHz)
□ Asynchronous Sample Rate Converters
□ μC I/F: I2C-Compatible, SPI
□ Operational, Sleep and Power-down Modes
□ Power Supply
VDD (DSP Core): 1.2V ±0.1V
TVDD (PCM I/F): 1.6V ~ 3.6V
□ Operating Temperature Range: -40C ~ 85C
□ Package: 30-Pin WL-CSP (2.94mm x 3.14mm, 0.5mm pitch)
□ Power Consumption: 9.2mA (11mW) typ. (Narrowband Handset mode operation)
MS1565-E-00-PB
1
2013/11
1 page  
■ Ordering Guide
AK7719BECB
AKD7719
■ Pin Layout
5. Pin Configurations and Functions
-40 +85C 30-pin CSP (0.5mm pitch) Black type
Evaluation board for AK7719B
[AK7719B]
Top View
A BCDE
6
5
4
3
2 INDEX
MARK
1
6
5
Bottom View
4
3
2
1
E DC B A
MS1565-E-00-PB
6 PDN SDIN1 SDOUT1 BCLK1 SYNC1
5
VDD
BCLK3/
JX0
SDIN3
SDOUT3/
GP0
SYNC2
4
VSS
SYNC3/
JX1
TEST SDOUT5 BCLK2
SDOUT 4
3 TVDD I2C SDIN4 /GP1/STO/ SDIN2
RDY
2
SI/CAD1
SCLK/
CAD0
CSN/
SCL
SO/SDA SDOUT2
1 BCLK4 SYNC4 SDIN5 BCLK5 SYNC5
ABCDE
TOP View
5
2013/11
5 Page 
[AK7719B]
■ SRC Block
11. Filter Characteristics
(Ta= -40°C~85°C, VDD=1.1V~1.3V, TVDD=1.6~3.6V, VSS =0V)
Parameter
Symbol min
typ max Unit
Passband -0.01dB 0.980≦FSO/FSI≦6.000
PB
0
0.4583FSI kHz
0.900≦FSO/FSI＜0.990
PB
0
0.4167FSI kHz
0.533≦FSO/FSI＜0.909
PB
0
0.2182FSI kHz
0.490≦FSO/FSI＜0.539
PB
0
0.2177FSI kHz
0.450≦FSO/FSI＜0.495
PB
0
0.1948FSI kHz
0.225≦FSO/FSI＜0.455
PB
0
0.1312FSI kHz
Passband -0.50dB 0.167≦FSO/FSI＜0.227
PB
0
0.0658FSI kHz
Stopband
0.980≦FSO/FSI≦6.000
SB 0.5417FSI
kHz
0.900≦FSO/FSI＜0.990
SB 0.5021FSI
kHz
0.533≦FSO/FSI＜0.909
SB 0.2974FSI
kHz
0.490≦FSO/FSI＜0.539
SB 0.2812FSI
kHz
0.450≦FSO/FSI＜0.495
SB 0.2604FSI
kHz
0.225≦FSO/FSI＜0.455
SB 0.1802FSI
kHz
0.167≦FSO/FSI＜0.227
SB 0.0970FSI
kHz
Passband Ripple 0.225≦FSO/FSI≦6.000
PR
±0.01 dB
0.167≦FSO/FSI＜0.227
PR
±0.50 dB
Stopband
Attenuation
0.450≦FSO/FSI≦6.000
0.167≦FSO/FSI＜0.455
SA
SA
95.2 dB
90.0 dB
Group Delay
(Note 10)
GD
52.5×Tsi
+ 9.5×Tso
Sec
Note 10. Group delay is a calculated time from a rising edge of SYNC at the input to a rising edge of SYNC at
the output.
SYNCI
SDTI
SRC Block
SYNCO
SDTO
SYNCI
SDTI
SYNCO
SDTO
Tsi
Lch Rch
Tso
52.5×Tsi + 9.5×Tso
Lch Rch
Figure 3. SRC Filter Group Delay (Left Justified)
MS1565-E-00-PB
11
2013/11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AK7719B.PDF ] | |
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