AKD4254-A Datasheet, PDF (3/24 Pages) Asahi Kasei Microsystems – 7:2 video switches

ASAHI KASEI
[2] Serial Mode (3-wire)
(1-1) Set up jumper pins [JP3, JP4]
JP3 SDA
JP4 CSN
(1-2) Set up DIP Switches [SW2]
Pin No. [SW2]
1
2
3
4
5
6
7
Pin Name
CAD0
CAD1
---
---
---
I2C
P/S
ON (“H”,“1”) / OFF (“L”,“0”)
Chip Address Select (Note1)
Chip Address Select (Note1)
“Don’t Care”
“Don’t Care”
“Don’t Care”
OFF (“L”)
OFF (“L”)
Table 3. Set up DIP Switches for Serial Mode (3-wire)
(Note1) Chip Address is selected by CAD1, CAD0 pin
[3] Serial Mode (I²C)
(1-1) Set up jumper pins [JP3, JP4]
JP3 SDA
JP4 CSN
(1-2) Set up DIP Switches [SW2]
Pin No. [SW2]
1
2
3
4
5
6
7
Pin Name
CAD0
CAD1
---
---
---
I2C
P/S
ON (“H”,“1”) / OFF (“L”,“0”)
Chip Address Select (Note1)
Chip Address Select (Note1)
“Don’t Care”
“Don’t Care”
“Don’t Care”
ON (“H”)
OFF (“L”)
Table 4. Set up DIP Switches for Serial Mode (I²C)
(Note1) Chip Address is selected by CAD1, CAD0 pin
„ Set up jumper pins
1. JP1 (GND) : Analog ground and Digital ground
OPEN : Separated.
SHORT : Common. (The connector “DGND” can be open.) <Default>
2. JP5 (AVDD(D-A)):AVDD and D3.3V_IN(Digital Logic power supply)
OPEN : Separated.
SHORT : Common. (JP5 should be “SHORT”.) <Default>
[AKD4254-A]
<KM085203>
-3-
2007/01