Philips Semiconductors
Universal sync generator (USG)
The different lock modes are illustrated by the following figures:
Product specification
SAA1101
handbook, halfpage
n × fH
LINE
OSCILLATOR
SUB-
CARRIER
OSCILLATOR
OSCO
FSI
6
1
OSCI
5
PH
8
FSO
2
SAA1101
10
9
LM0
LM1
logic 0 logic 1 MGH193
Fig.3 (a) Lock to subcarrier.
handbook, halfpage
n × fH
LINE
OSCILLATOR
OSCO
ECS
6
11
OSCI
5
PH
8
SAA1101
10
LM0
logic 1
9
LM1
logic 1
MGH195
Fig.3 (c) Fast sync lock, internal H ref
handbook, halfpage
n × fH
LINE
OSCILLATOR
OSCO
ECS
6
11
OSCI
5
PH
8
SAA1101
10
LM0
logic 0
9
LM1
logic 1
MGH194
Fig.3 (b) Slow sync lock, internal Href
January 1990
handbook, halfpage
n × fH
LINE
OSCILLATOR
τ
Href
HD
OSCO OSCI
FSI 22 6
1
5
PH
8
SAA1101
ECS
11
10
9
LM0
LM1
logic 0 logic 1 MGH192
Fig.3 (d) Slow sync lock, external H ref
6