BU1425AK View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BU1425AK

NTSC / PAL digital RGB encoder

ROHM Semiconductor 

Multimedia ICs

2. Master mode, doubled clock mode

Encoder master (pin 33 = H)

Internal clock = 2∗ input clock (pin 53 = H)

VCLK (pin53)

Internal clock

(BCLK)

Input data

Output data

(HSY, VSY)

BU1425AK / BU1425AKV

Tds2

Fig.12

∗ In this mode, the internal clock (BCLK) begins to operate at a halved frequency at the rise of the VCLK input, fol-

lowing the rise of the RSTB pin (pin 52).

Table 12

Parameter

Data setup time 2

Symbol

Min.

Typ.

Max.

Tds2

10

—

—

3. Slave mode, ∗1 clock mode

Encoder slave (pin 33 = H)

Internal clock = input clock (pin 53 = H)

VCLK (pin53)

Internal clock

(BCLK)

Input data

Input data

(HSY, VSY)

Tsh1 Tsd1

Fig.13

Tds3S Tds3H

19

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