BU1424K View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BU1424K

NTSC / PAL digital RGB encoder

ROHM Semiconductor 

Multimedia ICs

Pin No.

Pin name I / O

27

VSY

I

29

PIXCLK

O

32

INT

I

33

SLABEB

I

34

ADDH

I

35

Vref-C

I

Equivalent circuit

BU1424K

Function

Vertical synchronization signals

(VSYNC) are input (when SLABEB =

LOW) or output (when SLABEB =

HIGH) here.

The internal processing clock is divid-

ed in half and then output. Data is

read at the point at which the edge of

this clock changes. This can also be

used as the clock for the OSD IC.

This pin switches between interlace

(when HIGH) and non-interlace

(when LOW) modes. This pin is effec-

tive in both the VIDEO-CD and CD-G

modes.

This pin switches between the Master

(when HIGH) and Slave (when LOW)

modes. It is effective in the non-

interlace mode, and it switches bet-

ween – 0.5 lines (when LOW) and +

0.5 lines (when HIGH) for the number

of lines in an interlace field.

This is the reference voltage generator

circuit monitoring pin which deter-

mines the output amplitude (output cur-

rent for 1 LSB) of the DAC.

8

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