Decoder. AK4140 Datasheet

AK4140 Datasheet PDF


AK4140
ASAHI KASEI
[AK4140]
AK4140
Digital BTSC Decoder
GENERAL DESCRIPTION
The AK4140 is a BTSC decoder, which is optimized for Digital STB/TV application. The AK4140 achieves
high audio performance using original demodulation techniques for 4.5MHz inter-carrier sound, and the
digital BTSC decoding architecture using digital dbx-TV® technology licensed from THAT Corporation
requires no alignment of external parts. The AK4140 supports major audio data formats (MSB justified,
I2S, TDM) to interface with usual DSP. Therefore, the AK4140 is suitable for the systems such as Digital
STB/TV, AV recorder etc.
The dbx-TV® brand identifies a range of technology solutions for digital TV-audio decoding developed and
licensed by THAT Corporation. The dbx-TV provides high performance solutions with high quality sound.
FEATURES
† Capable of receiving 4.5MHz intercarrier sound and FM demodulation
† Alignment Free Digital BTSC decoding (Mono/Stereo/SAP)
† Programmable pilot/SAP/noise detection threshold
† Automatic return to mono dependant on pilot/noise level
† Mono/Stereo/SAP selectable output
† Digital volume control
† Soft Mute function
† Digital HPF for DC-Offset cancel
† Sampling Rate (fs): 32k/44.1k/48kHz
† Master Clock: 256fs/384fs/512fs/768fs
† Audio Interface: Master or Slave Mode
† Output format: 16bit MSB justified / I2S or TDM
† S/(N+D): 0.13%
† S/N:
73dB
† Power Supply: 2.7 ~ 3.6V
† Ta: -20 ~ 85°C
www.DataSheet4U.com
FILT
VDD VSS PDN
MCLK
Clock Divider
SIF
FM
Demodulator
BTSC
Decoder
Serial I/O
Interface
TDMIN
LRCK
SCLK
SDTO
Control
Register
CAD1 CAD0 SCL SDA INT0 INT1
.
MS0547-E-01
-1-
2007/03


Part AK4140
Description Digital BTSC Decoder
Feature AK4140; ASAHI KASEI [AK4140] AK4140 Digital BTSC Decoder GENERAL DESCRIPTION The AK4140 is a BTSC decoder,.
Manufacture Asahi Kasei Microsystems
Datasheet
Download AK4140 Datasheet


ASAHI KASEI [AK4140] AK4140 Digital BTSC Decoder GENERAL D AK4140 Datasheet
ASAHI KASEI [AKD4140-B] AKD4140-B AK4140 Evaluation Board AK4140-B Datasheet





AK4140
ASAHI KASEI
„ Ordering Guide
AK4140VF
AKD4140
„ Pin Layout
-20 +85°C
Evaluation Board
24pin VSOP
[AK4140]
FILT
AVSS
AVDD
SIF
DVSS
DVDD
SDTO
SCLK
LRCK
MS
TDMIN
www.DataSheet4UM.coCmLK
1
2
3
4
5
6
7
8
9
10
11
12
Top
View
24 TST2
23 TST1
22 TSTI2
21 TSTI1
20 TSTO
19 PDN
18 INT1
17 INT0
16 CAD1
15 CAD0
14 SCL
13 SDA
MS0547-E-01
-2-
2007/03



AK4140
ASAHI KASEI
[AK4140]
PIN/FUNCTION
No. Pin Name I/O Function
1 FILT
Filter Pin
-
2.2nF should be connected between FILT pin and VSS pin.
2 AVSS
- Analog Ground Pin
3 AVDD
- Analog Power Supply Pin, 2.7 3.3V
4 SIF
4.5MHz SIF Input Pin.
I
Should be AC-coupled with 68nF.
5 DVSS
- Digital Ground Pin
6 DVDD
- Digital Power Supply Pin, 2.7 3.3V
7 SDTO
Audio Serial Data Output Pin
O
“L” Output at Power-down mode.
8 SCLK
Audio Serial Data Clock Pin
I/O
“L” Output in Master Mode at Power-down mode.
9 LRCK
Output Channel Clock Pin
I/O
“L” Output in Master Mode at Power-down mode.
10 MS
Master/Slave Control Pin
I
“H”: Master Mode, “L”: Slave Mode
11 TDMIN
TDM Serial Data Input Pin
I
Should be connected to “L” in normal mode.
12 MCLK
13 SDA
14 SCL
I Master Clock Input Pin
I/O Control Data Pin.
I Control Data Clock Pin.
15 CAD0
I Chip Address Pin 0
16 CAD1
I Chip Address Pin 1
17 INT0
O Interrupt Pin 0
18 INT1
O Interrupt Pin 1
Power Down Mode Pin
www.DataS19heet4PUD.coNm
I “H”: Power up, “L”: Power down and reset. The AK4140 must be reset once upon
power-up.
20 TSTO
Test Output Pin
O
Should be open.
21 TSTI1
Test Input Pin 1 (pull-down pin. typ: 150k ohm.)
I
Should be connected to DVSS.
22 TSTI2
Test Input Pin 2
I
Should be connected to DVSS.
23 TST1
Test Mode Pin 1 (pull-down pin. typ: 150k ohm.)
I
Should be connected to DVSS.
24 TST2
Test Mode Pin 2 (pull-down pin. typ: 150k ohm.)
I
Should be connected to DVSS.
MS0547-E-01
-3-
2007/03






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