參數(shù)資料
型號(hào)： AK4703
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： AV SCART switch
中文描述： 影音SCART開(kāi)關(guān)
文件頁(yè)數(shù)： 12/38頁(yè)
文件大小： 351K
代理商： AK4703
ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
Rev. 0.1
2004/03
- 12 -
OPERATION OVERVIEW
1.
System Reset and Power-down options
The AK4703 should be reset once by bringing PDN pin = “L” upon power-up. The AK4703 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
*
AMPPD bit
*
Mode
Full Power-down
Auto Startup mode
(Power-on Default)
Standby & Mute
Standby
Mute
(AMP power down)
Mute
(AMP operation)
Normal operation
(AMP power down
& Analog input)
Normal operation
(AMP 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
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 (**)
Power down
Hi-Z
Hi-Z
Pull-down (*)
1
Auto Startup mode
(Power-on Default)
Active
Active (***)
2
Standby & Mute
Power
down
Active
3
Standby
Mute
(AMP power down)
Mute
(AMP operation)
Normal operation
(AMP power down
& Analog input)
Normal operation
(AMP operation)
4
5
Power
down
6
7
Available
Active
(****)
Hi-Z / Active
Active
Active
(*): Internally pulled down by 120k
(typ) resistor.
(**): Video input to TVVIN or VCRVIN.
(***): VCRC outputs 0V for termination.
(****): TVOUTL/R are muted by Mute bit in the default state.
Table 2. Status of each operation modes
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