AK4254 Datasheet, PDF (3/22 Pages) Asahi Kasei Microsystems – Capacitor-less Video Amp with 7:2 Video Switch

[AK4254]
PIN/FUNCTION
No. Pin Name I/O Function
1 CVDD1 - Charge Pump Power Supply pin, 2.7V∼3.6V
Positive Charge Pump Capacitor Terminal 1 Pin.
Connect to CN1 with a 1.0μF capacitor that has the low ESR (Equivalent Series
2
CP1
O Resistance) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CP pin. Non polarity capacitors can also
be used.
Negative Charge Pump Capacitor Terminal 1 Pin
Connect to CP1 with a 1.0μF capacitor that has the low ESR (Equivalent Series
3
CN1
I Resistance) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CP pin. Non polarity capacitors can also
be used.
Charge Pump Ground Pin, 0V
Connect to VEE1 with a 1.0μF capacitor that has the low ESR (Equivalent Series
4
CVSS1
-
Resistance) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CVSS1 pin. Non polarity capacitors can
also be used.
Negative Voltage Output Pin for Video Amplifier 1
Connect to CVSS1 with a 1.0μF capacitor that has the low ESR (Equivalent Series
5 CVEE1 O Resistance) over all temperature range. When this capacitor has the polarity, the
positive polarity pin should be connected to the CVSS1 pin. Non polarity capacitors can
also be used.
6 VOUT1 O Video Output #1 Pin
7
AVDD
- Analog Power Supply Pin, 2.7V∼3.6V
8
AVSS
- Analog Ground Pin, 0V
9
TEST
I
Test Pin
This pin should be connected to AVSS.
10
P/S
I
Parallel/Serial Control Mode Pin
“L”: Serial Control Mode, “H”: Parallel Control Mode
11 VIN1
I Video Input #1 Pin
12 VIN2
I Video Input #2 Pin
13 VIN3
I Video Input #3 Pin
14 VIN4
I Video Input #4 Pin
15 VIN5
I Video Input #5 Pin
16 VIN6
I Video Input #6 Pin
17 VIN7
I Video Input #7 Pin
18
CAD0
SEL10
I Chip Address 0 in Serial Control Mode
I Input Selector 1 Control #0 Pin in Parallel Control Mode
19
CAD1
SEL11
I Chip Address 1 in Serial Control Mode
I Input Selector 1 Control #1 Pin in Parallel Control Mode
20
CSN
I
Chip Select Pin in Serial Control Mode, I2C pin = “L”
This pin should be connected to AVSS in Serial Control Mode. I2C pin =“H”
SEL12
I Input Selector 1 Control #2 Pin in Parallel Control Mode.
CCLK
I Control Data Clock Pin in Serial Control Mode, I2C pin = “L”
21
SCL
I Control Data Clock Pin in Serial Control Mode, I2C pin = “H”
SEL20
I Input Selector 2 Control #0 Pin in Parallel Control Mode
CDTI
I Control Data Input Pin in Serial Control Mode, I2C pin = “L”
22
SDA
I/O Control Data Pin in Serial Control Mode, I2C pin = “H”
SEL21
I Input Selector 2 Control #1 Pin in Parallel Control Mode.
23
I2C
I
Control Mode Select Pin in Serial Control Mode
“L”: 3-wire Serial Mode, “H”: I²C Bus mode
SEL22
I Input Selector 2 Control #2 Pin in Parallel Control Mode
MS0586-E-01
-3-
2007/08