AKD4145 View Datasheet(PDF) - Asahi Kasei Microdevices

Part Name

Description

Manufacturer

AKD4145

Digital BTSC Stereo Encoder

Asahi Kasei Microdevices 

[AK4145]

PIN/FUNCTION

No. Pin Name I/O Function

1 FILT

-

Filter Pin, 4.7nF should be connected between FILT pin and VSS pin.

2 PSN

I

Parallel/Serial Select Pin (Internal pull-up pin)

“L”: Serial control mode, “H”: Parallel control mode

3 CV27M I

Composite Video or 27MHz Signal Input Pin.

4 PDN

I

Power-Down Mode Pin

When at “L”, the AK4145 is in the power-down mode and is held in reset.

The AK4145 must be reset once upon power-up.

5 MCLK

I

Master Clock Input Pin

6 LRCK

I

Channel Clock Input Pin

7 BICK

I

Audio Serial Data Clock Input Pin

8 SDTI

I

Audio Serial Data Input Pin

9 FS

I

Sampling Rate Control Pin in parallel control mode

SDA

I/O Control Data Pin in serial control mode

10 DIF

I

Audio Data Interface Format Pin in parallel control mode

SCL

I

Control Data Clock Pin in serial control mode

11 TVDD

-

Digital I/O Power Supply Pin, DVDD(min:1.7V) ∼ 3.6V

12 DVDD

-

Digital Power Supply Pin, 1.7 ∼ 1.9V

13 VSS

-

Ground Pin

14 VCOM

O Common Voltage Pin, AVDD/2

Normally connected to VSS with a 0.1μF ceramic capacitor in parallel with a 10μF

electrolytic cap.

15 AVDD

-

Analog Power Supply Pin, 2.7 ∼ 3.6V

16 CA

O Baseband Composite Audio Output Pin

Note: All input pins except pull-up pin should not be left floating.

■ Handling of Unused Pin

The unused I/O pins should be processed appropriately as below.

Classification Pin Name

Analog

CV

Digital

FS(Parallel mode), DIF(Parallel mode)

Setting

Connect to VSS.

Connect to VDD or VSS.

■ Output Status at PDN pin = “L”

Below is the output status of each output pin when the PDN pin = “L”.

Pin#

Pin Name

1

FILT

9

SDA

14

VCOM

16

CA

Status

VSS

Hi-Z

VSS

VCOM(=VSS)

Rev. 0.3-PB

-3-

2007/12

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