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參數(shù)資料
| 型號： | AK4707EQ |
| 廠商： | ASAHI KASEI POWER DEVICES CORP |
| 元件分類： | 消費家電 |
| 英文描述： | AV SCART Switch |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 18/42頁 |
| 文件大?。?/td> | 418K |
| 代理商： | AK4707EQ |
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ASAHI KASEI
[AK4707]
MS0551-E-00
2006/10
- 18 -
Normal Operation Mode
To change analog switches, set the AUTO bit, BIAS bit and STBY bit to “0”. The AK4707 is in power-down mode until
PDN pin = “H”. The Figure 2 shows an example of the system timing at the power-down and power-up by PDN pin.
Typical Operation Sequence (auto setup mode)
Figure 2 shows an example of the system timing at auto setup mode.
PDN pin
Low Power Mode
Audio out (DC)
TVVOUT,
VCRVOUT
Active (loop-through)
TVVIN
Signal in
No Signal
don’t care
Signal in
No Signal
don’t care
VCRVIN
Signal in
No Signal
don’t care
don’t care
Active (loop-through)
Hi-Z
Hi-Z
Active (loop-through)
(GND)
Active (loop-through)
No Signal
No Signal
Hi-Z
Low Power Mode
Low Power Mode
Figure 2. Typical operating sequence (auto setup mode)
Typical Operation Sequence (except auto setup mode)
Figure 3 shows an example of the system timing at auto setup mode.
PDN pin
“1” (default)
STBY bit
“0”
“1”
“1” (default)
BIAS bit
“0”
“Stand-by“
“1”
“0”
“Stand-by“
“Mute”
TV out
AMP
TV-Source
select
VCR in
VCR in
VCR in
(1)
VCR in
fixed to VCR in(Loop-through)
(default)
“1” (default)
AUTO bit
“0”
AMP
AMP
fixed to VCR in(Loop-through)
“1”
(2)
Notes:
(1) Set the STBY bit = “0” to pass for 20.2ms after set the MUTE bit = “0”, to prevent the click noise (1).
(2) Mute the analog outputs externally if click noise (2) affects the system.
Figure 3. Typical operating sequence (except auto setup mode)
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