AK4254 Datasheet, PDF (11/22 Pages) Asahi Kasei Microsystems – Capacitor-less Video Amp with 7:2 Video Switch

ASAHI KASEI
[AK4254]
SEL22 pin SEL21 pin SEL20 pin
VOUT2 pin
L
L
L
Off Note: 14)
L
L
H
VIN1
L
H
L
VIN2
L
H
H
VIN3
H
L
L
VIN4
H
L
H
VIN5
H
H
L
VIN6
H
H
H
VIN7
Note: 14. When the input setting is “Off”, VOUT2 output is “GND”.
Table 4. Input Selector 2 (Parallel Control Mode)
■ Serial Control Mode (P/S pin = “L”)
The AK4524 is in Serial Control Mode at P/S pin = “L”.
Mode
PDN pin SEL 12-10 bit CVEE1 pin
VOUT1 pin
Power Down mode
L
x
GND
GND
Normal mode
H
“000”
GND
GND
H
Except for
“000”
-CVDD1 Video signal output
(x: Don’t Care)
Table 5. VOUT1 mode setting (Serial Control Mode)
Mode
PDN pin SEL 22-20 bit CVEE2 pin
VOUT2 pin
Power Down mode
L
x
GND
GND
Normal mode
H
“000”
GND
GND
H
Except for
“000”
-CVDD1 Video signal output
(x: Don’t Care)
Table 6. VOUT2 mode setting (Serial Control Mode)
(a) Power Down mode (PDN pin= “L”)
When PDN pin =“L”, the register is reset and the AK4254 is in Power Down mode. When the AK4524 is in the Power
Down mode, the VOUT1-2 outputs are “GND”.
(b) Normal mode (PDN pin= “H”)
The AK4524 have 7:2 video switches. In the Serial Control Mode, the each input of VOUT1-2 is set by SEL12-10 bits
and SEL22-20 bits.
SEL12 bit SEL11 bit SEL10 bit
VOUT1 pin
0
0
0
Off Note: 15) (default)
0
0
1
VIN1
0
1
0
VIN2
0
1
1
VIN3
1
0
0
VIN4
1
0
1
VIN5
1
1
0
VIN6
1
1
1
VIN7
Note: 15. When the input setting is “Off”, VOUT1 output is “GND”.
Table 7. Input Selector 1 (Serial Control Mode)
MS0586-E-01
- 11 -
2007/08