tda4855 NXP Semiconductors, tda4855 Datasheet - Page 29

• Manufacturer Part Number: tda4855
• Description: Autosync Deflection Controller Asdc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Start-up and shut-down sequence
1996 Jul 18
handbook, full pagewidth
handbook, full pagewidth
Autosync Deflection Controller (ASDC)
(1) See Fig.15 for PLL2 soft-start.
V CC
V CC
Fig.14 Start-up sequence and shut-down sequence.
4.0 V
8.5 V
5.8 V
continuous blanking CLBL (pin 16) activated
b. Shut-down sequence.
continuous blanking CLBL (pin 16) activated
PLL2 disabled
frequency detector disabled
a. Start-up sequence.
PLL2 soft start sequence begins
8.0 V
8.2 V
29
video clamping pulse disabled
BDRV floating
VOUT1 and VOUT2 floating
video clamping pulse enabled
BDRV enabled
VOUT1 and VOUT2 enabled
5.6 V
8.5 V
4.0 V
HDRV floating
continuous blanking off
PLL2 enabled
frequency detector enabled
(1)
continuous blanking disappears
time
V HPLL2
V CC
and
8.2 V
MBG554
3.7 V
Preliminary specification
V HPLL2
V CC
time
and
MBG555
TDA4855
8.5 V
4.4 V