AK4703 Datasheet, PDF (14/38 Pages) Asahi Kasei Microsystems – AV SCART switch

ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
„ Typical Operation Sequence (auto setup mode)
The Figure 2 shows an example of the system timing at auto setup mode.
PDN pin
Low Power Mode
Low Power Mode
Low Power Mode
TVVIN
don’t care No Signal
Signal in
No Signal
Signal in
No Signal
don’t care
VCRVIN
don’t care
No Signal
Signal in
No Signal don’t care
TVVOUT,
VCRVOUT
Hi-Z
Active (loop-through)
Hi-Z
Active (loop-through)
Hi-Z
Audio out (DC)
(GND)
Active (loop-through)
Active (loop-through)
Figure 2. Typical operating sequence (auto setup mode)
„ Typical Operation Sequence (except auto setup mode)
The Figure 3 shows an example of the system timing at auto setup mode.
PDN pin
AUTO bit
BIAS bit
STBY bit
“1” (default)
“1” (default)
“1” (default)
“Stand-by“
“0”
“Mute”
“0”
“1”
“0”
“Stand-by“
“0”
“1”
“1”
TV-Source
select
fixed to VCR in(Loop-through)
VCR in
(default)
AMP
(2)
offset calibration
VCR in
TV out
VCR in
VCR in
(1)
Notes:
(1) Mute the analog outputs externally if click noise (1) adversely affects the system.
(2) In case of the CAL bit = “1”, the offset calibration is always executed when the source of TVOUTL/R pins are
switched to AMP after the STBY bit is changed to “0”. To disable this function, set the CAL bit = “0”.
Figure 3. Typical operating sequence (except auto setup mode)
Rev. 0.1
- 14 -
2004/03