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參數(shù)資料
| 型號： | AK4706 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 2ch 24bit DAC with AV Switch & HD/SD Video Filter |
| 中文描述： | 2通道24位DAC，帶有AV系列開關(guān) |
| 文件頁數(shù)： | 20/53頁 |
| 文件大?。?/td> | 597K |
| 代理商： | AK4706 |
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ASAHI KASEI
[AK4706]
MS0507-E-00
2006/05
- 20 -
OPERATION OVERVIEW
1. System Reset and Power-down options
The AK4706 should be reset once by bringing PDN pin = “L” upon power-up. The AK4706 has several operation modes.
The PDN pin, AUTO bit, DAPD bit, MUTE bit and STBY bit control operation modes as shown in Table 1 and Table 2.
PDN
pin
bit
bit
bit
0
“L”
*
*
*
Mode
AUTO
STBY
MUTE
DAPD
bit
*
Mode
Full Power-down
Auto Startup mode
(default)
Standby & mute
Standby
Mute
(DAC power down)
Mute
(DAC operation)
Normal operation
(DAC power down & Analog input)
Normal operation
(DAC operation)
1
“H”
1
*
*
*
2
3
“H”
“H”
0
0
1
1
1
0
*
*
4
“H”
0
0
1
1
5
“H”
0
0
1
0
6
“H”
0
0
0
1
7
“H”
0
0
0
0
*: Don’t Care
Table 1. Operation Mode Settings
Audio
MCLK,
BICK,
LRCK
Not
needed
Video Output
Mode
Register
Control
DAC
Audio Bias
Level
Video
Signal
TVFB,
TVSB
VCRSB
0
Full Power-down
NOT
available
Power
down
Power
down
Hi-Z
Hi-Z
Pull-down
(2)
1
Auto Startup mode
No video input
Auto Startup mode
Video input (3)
Available
Active
Active
(4)
Hi-Z/
Active
Active
Active
2
Standby & mute
Power
down
Active
Power
down
Active
(1)
3
4
5
Standby
Mute1
Mute2
Active
Needed
6
Normal operation
(DAC power down
& Analog input)
Normal operation
(DAC operation)
Power
down
Not
needed
7
Active
Needed
Notes:
(1) TVOUTL/R are muted by VMUTE bit in the default state.
(2) Internally pulled down by 120kohm(typ) resistor.
(3) Video input to TVVIN or VCRVIN.
(4) VCRC outputs 0V for termination.
HD Video output does not work. (Hi-Z default)
Table 2. Status of each operation modes
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| AK4706_10 | 制造商:AKM 制造商全稱:AKM 功能描述:2ch 24bit DAC with AV Switch & HD/SD Video Filter |
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