參數(shù)資料
型號： 935260017551
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： PLASTIC, SOT-314, LQFP-64
文件頁數(shù)： 28/75頁
文件大?。?/td> 479K
代理商： 935260017551
1998 May 15
34
Philips Semiconductors
Product specication
Enhanced Video Input Processor (EVIP)
SAA7111A
Table 3
Digital output control
Note
1. Only active in 656-format (OFTS = 3).
OEYC
FEI
TCLO(1)
VPO
15 to 8
VPO
7to0
000
Z
1
0
active
010
Z
110
Z
001
Z
1
0
1
active
Z
011
Z
111
Z
14 CLOCK SYSTEM
14.1
Clock generation circuit
The internal CGC generates the system clocks LLC, LLC2
and the clock reference signal CREF. The internally
generated LFCO (triangular waveform) is multiplied by 4
via the analog PLL (including phase detector, loop filter,
VCO and frequency divider). The rectangular output
signals have a 50% duty factor.
Table 4
Clock frequencies
CLOCK
FREQUENCY (MHz)
XTAL
24.576
LLC
27
LLC2
13.5
LLC4
6.75
LLC8
3.375
Fig.26 Block diagram of clock generation circuit.
handbook, full pagewidth
BAND PASS
FC = LLC/4
ZERO
CROSS
DETECTION
PHASE
DETECTION
LOOP
FILTER
DIVIDER
1/2
DIVIDER
1/2
OSCILLATOR
DELAY
CREF
MGC632
LLC2
LLC
LFCO
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