TDA4857 datasheet(39/56 Pages) PHILIPS

Part #	TDA4857

Description	I2C-bus autosync deflection controller for PC monitors

PDF	56 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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39 / 56 page

2000 Jan 31

Philips Semiconductors

Product speciﬁcation

I2C-bus autosync deﬂection controller for

PC monitors

TDA4857PS

Start-up sequence and shut-down sequence

handbook, full pagewidth

VCC

continuous blanking off

PLL2 soft start/soft-down enabled(1)

8.6 V

3.5 V

continuous blanking (pin 16 and 17) activated

time

8.3 V

data accepted from I2C-bus

video clamping pulse enabled if control bit STDBY = 0

MGM082

handbook, full pagewidth

VCC

MGM083

continuous blanking (pin 16 and 17) activated

PLL2 soft-down sequence is triggered(2)

8.6 V

8.1 V

3.5 V

continuous blanking disappears

time

no data accepted from I2C-bus

video clamping pulse disabled

Fig.23 Start-up sequence and shut-down sequence.

a. Start-up sequence.

b. Shut-down sequence.

(1) See Figs 18, 19, 20, 24 and 25.

(2) See Figs 24b and 25b.

TDA4857 Datasheet(PDF) 39 Page - NXP Semiconductors