AK8818VG datasheet(7/50 Pages) AKM

Part #	AK8818VG

Description	NTSC/PAL Digital Video Encoder

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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7 / 50 page

ASAHI KASEI

[AK8817/18]

Rev.001E

7

2009 / 12

AK8817VQ/AK8818VQ

Pin#

Pin Name

I/O

Functional Outline

1

N.C.

-

For normal operation, left open.

2

N.C.

-

For normal operation, left open.

3

AVDD

P

Analog power supply pin.

4

IREF

O

IREF output pin. Connect this pin to Analog ground via a 12k ohm resistor

( better than +/- 1% accuracy ).

5

VREF

O

On-chip VREF output pin.

AVSS level is output on this pin at PDN = L.

Connect this pin to Analog Ground via a 0.1 uF or larger capacitor.

6

UD4

O

Test output pin. For normal operation, left open.

7

UD3

O

Test output pin. For normal operation, left open.

8

UD2

O

Test output pin. For normal operation, left open.

9

UD1

O

Test output pin. For normal operation, left open.

10

UD0

O

Test output pin. For normal operation, left open.

11

N.C.

-

For normal operation, left open.

12

N.C.

-

For normal operation, left open.

13

N.C.

-

For normal operation, left open.

14

CLKINV

I

Internal clock is inverted (internal operation timing edge is inverted.)

Connect to either DVDD or DGND.

15

CLKIN

I

Clock input pin.

Input a clock which is synchronized with data.

When to input 601 data : 27 MHz.

When to input square pixel data : 24.5454 MHz ( NTSC )/ 29.50 MHz ( PAL )

16

DVSS

G

Digital ground pin (digital core ground).

17

DVDD

P

Digital power supply pin (digital core power supply).

18

D7

I

Data Video Signal input pin (MSB).

Hi-Z input is acceptable to this pin at PDN = L.

19

D6

I

Data Video Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

20

D5

I

Data Video Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

21

D4

I

Data Video Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

22

D3

I

Data Video Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

23

D2 (17)

N.C. (18)

I

AK8817: Video Data Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

AK8818:

N.C.

F

or normal operation, left open.

24

N.C.

-

For normal operation, left open.

25

N.C.

-

For normal operation, left open.

26

N.C. (17)

D2 (18)

I

AK8817: N.C.

F

or normal operation, left open.

AK8818: Video Data Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

27

TEST

I

For normal operation, connect to ground.

28

D1

I

Data Video Signal input pin.

Hi-Z input is acceptable to this pin at PDN = L.

29

D0

I

Data Video Signal input pin (LSB).

Hi-Z input is acceptable to this pin at PDN = L.

30

PVDD

P

Power supply pin for chip pad.

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