saa7114 NXP Semiconductors, saa7114 Datasheet - Page 32
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saa7114
Manufacturer Part Number
saa7114
Description
Pal/ntsc/secam Video Decoder With Adaptive Pal/ntsc Combfilter, Vbi-data Slicer And High Performance Scaler
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7114.pdf
(144 pages)
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Philips Semiconductors
SAA7114_3
Product data sheet
8.1.6 Power-on reset and CE input
Table 6:
A missing clock, insufficient digital or analog V
the reset sequence; all outputs are forced to 3-state (see
RES is LOW for approximately 128 LLC after the internal reset and can be applied to reset
other circuits of the digital TV system.
It is possible to force a reset by pulling the CE input to ground. After the rising edge of CE
and sufficient power supply voltage, the outputs LLC, LLC2 and SDA return from 3-state
to active, while the other signals have to be activated via programming.
Clock
XTALO
LLC
LLC2
LLC4 (internal)
LLC8 (virtual)
Fig 20. Block diagram of the clock generation circuit
LFCO
Decoder clock frequencies
BAND PASS
FC = LLC/4
Rev. 03 — 17 January 2006
DETECTION
CROSS
ZERO
DETECTION
PHASE
Frequency (MHz)
24.576 or 32.110
27
13.5
6.75
3.375
DDA0
supply voltages (below 2.7 V) will start
PAL/NTSC/SECAM video decoder
DIVIDER
FILTER
LOOP
Figure
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
1/2
21). The indicator output
OSCILLATOR
SAA7114
DIVIDER
1/2
mhb330
32 of 144
LLC
LLC2