saa7157 NXP Semiconductors, saa7157 Datasheet - Page 8
saa7157
Manufacturer Part Number
saa7157
Description
Clock Signal Generator Circuit For Digital Tv Systems Scgc
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7157.pdf
(12 pages)
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PHILIPS/飞利浦
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Philips Semiconductors
May 1992
handbook, full pagewidth
handbook, full pagewidth
Clock signal generator circuit for digital TV
systems (SCGC)
LL1.5A
LL1.5B
LL3A
LL3B
V DDA
V DDD
LFCO
RESN
power-on
MS
CE
LFCOSEL
LFCO2
LFCO
internal reset
clock HIGH
during
16
19
11
1
2
reset time
t d
V DDD
V SSD
PLL lock-on
oscillation
Fig.4 Reset procedure.
operation
Fig.5 Internal circuit.
normal
8
reset procedure
power failure
starts a new
oscillation disturbed
t d
V DDD
V DDD
V SSD
V SSD
10
14
15
20
12
7
MEH468
LL1.5A
LL1.5B
LL3A
LL3B
CREF
RESN
operation
normal
Product specification
MEH457
SAA7157
0 V
3.5 V
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