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參數(shù)資料
| 型號： | AK4145ET |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | Digital BTSC Stereo Encoder |
| 中文描述： | 數(shù)字BTSC立體聲編碼器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大小： | 197K |
| 代理商： | AK4145ET |
[AK4145]
PIN/FUNCTION
No.
1
2
Pin Name
FILT
PSN
I/O
-
I
Function
Filter Pin, 4.7nF should be connected between FILT pin and VSS pin.
Parallel/Serial Select Pin (Internal pull-up pin)
“L”: Serial control mode, “H”: Parallel control mode
Composite Video or 27MHz Signal Input Pin.
Power-Down Mode Pin
When at “L”, the AK4145 is in the power-down mode and is held in reset.
The AK4145 must be reset once upon power-up.
Master Clock Input Pin
Channel Clock Input Pin
Audio Serial Data Clock Input Pin
Audio Serial Data Input Pin
Sampling Rate Control Pin in parallel control mode
Control Data Pin in serial control mode
Audio Data Interface Format Pin in parallel control mode
Control Data Clock Pin in serial control mode
Digital I/O Power Supply Pin, DVDD(min:1.7V)
～
3.6V
Digital Power Supply Pin, 1.7
～
1.9V
Ground Pin
Common Voltage Pin, AVDD/2
Normally connected to VSS with a 0.1
μ
F ceramic capacitor in parallel with a 10
μ
F
electrolytic cap.
Analog Power Supply Pin, 2.7
～
3.6V
Baseband Composite Audio Output Pin
Note: All input pins except pull-up pin should not be left floating.
■
Handling of Unused Pin
The unused I/O pins should be processed appropriately as below.
Classification
Pin Name
Analog
CV
Digital
FS(Parallel mode), DIF(Parallel mode)
■
Output Status at PDN pin = “L”
Below is the output status of each output pin when the PDN pin = “L”.
Pin#
Pin Name
1
FILT
9
SDA
14
VCOM
16
CA
3
4
CV27M
PDN
I
I
5
6
7
8
9
MCLK
LRCK
BICK
SDTI
FS
SDA
DIF
SCL
TVDD
DVDD
VSS
VCOM
I
I
I
I
I
I/O
I
I
-
-
-
O
10
11
12
13
14
15
16
AVDD
CA
-
O
Setting
Connect to VSS.
Connect to VDD or VSS.
Status
VSS
Hi-Z
VSS
VCOM(=VSS)
Rev. 0.3-PB
2007/12
- 3 -
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