參數(shù)資料
型號: AK4707
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: AV SCART Switch
中文描述: 影音SCART開關(guān)
文件頁數(shù): 16/42頁
文件大?。?/td> 418K
代理商: AK4707
ASAHI KASEI
[AK4707]
MS0551-E-00
2006/10
- 16 -
OPERATION OVERVIEW
1.
System Reset and Power-down options
The AK4707 should be reset once by bringing PDN pin = “L” upon power-up. The AK4707 has several operation modes.
The PDN pin, AUTO bit, BIAS bit, STBY bit and AMP bit control operation modes as shown in Table 1 and Table 2.
Mode
PDN pin
AUTO bit
STBY bit
0
“L”
*
*
BIAS bit
*
Mode
Full Power-down
Auto Startup mode
(Power-on default)
Standby & Mute
Standby
Mute
(AMP power down)
Normal operation
(AMP operation)
1
“H”
1
*
*
2
3
“H”
“H”
0
0
1
1
1
0
4
“H”
0
0
1
5
“H”
0
0
0
Table 1. Operation Mode Settings (*: Don’t Care)
Mode
Register
Control
Not
available
Audio Bias
Level
Video
Output
TVFB,
TVSB
VCRSB
0
Full Power-down
No video
input
Video
input (2)
Power down
Hi-Z
Hi-Z
Pull-down (1)
1
Auto Startup mode
(Power-on default)
Active
Active
2
Standby & Mute
Power
down
Active
Power
down
3
Standby
Mute
(AMP power down)
Normal operation
(AMP operation)
4
5
Available
Active (3)
Hi-Z / Active
Active
Active
Note 15. Internally pulled down by 120k
(typ) resistor.
Note 16. Video input to TVVIN or VCRVIN.
Note 17. TVOUTL/R are muted by Mute bit in the default state.
Table 2. Status of each operation modes
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