參數(shù)資料
型號(hào): SAA7110
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號(hào)轉(zhuǎn)換
英文描述: Digital Multistandard Colour Decoder(數(shù)字多標(biāo)準(zhǔn)彩色譯碼器)
中文描述: COLOR SIGNAL DECODER, PQCC68
封裝: PLASTIC, MO-047AC, SOT-188-2, LCC-68
文件頁數(shù): 28/76頁
文件大小: 416K
代理商: SAA7110
1995 Oct 18
28
Philips Semiconductors
Product specification
One Chip Front-end 1 (OCF1)
SAA7110; SAA7110A
15 CLOCK SYSTEM
15.1
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
four via the analog PLL (including phase detector, loop
filter, VCO and frequency divider). The rectangular output
signals have a 50% duty factor.
Table 4
System clock frequencies
CLOCK
FREQUENCY (MHz)
50 Hz
60 Hz
XTAL
LLC
LLC2
LLC4
LLC8
26.8
29.5
14.75
7.375
3.6875
26.8
24.545454
12.272727
6.136136
3.068181
Fig.18 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
MGC837
LLC2
LLC
LFCO
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