Tda8752b, Philips semiconductors – NXP Semiconductors Triple high-speed Analog-to-Digital Converter 110 Msps TDA8752B User Manual
Page 20
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Philips Semiconductors
TDA8752B
Triple high-speed Analog-to-Digital Converter 110 Msps
Product specification
Rev. 03 — 21 July 2000
20 of 38
9397 750 07338
© Philips Electronics N.V. 2000. All rights reserved.
The bits Vco1 and Vco0 control the VCO gain.
The default programmed value is as follows:
•
Internal resistance = 16 k
Ω
•
VCO gain = 15 MHz/V.
Table 9:
VCO register bits
Z2
Z1
Z0
Resistance (k
Ω
)
0
0
0
high impedance
0
0
1
128
0
1
0
32
0
1
1
16
1
0
0
8
1
0
1
4
1
1
0
2
1
1
1
1
Table 10: VCO gain control
Vco1
Vco0
VCO gain (MHz/V)
Pixel clock
frequency range
(MHz)
0
0
15
10 to 20
0
1
20
20 to 40
1
0
35
40 to 70
1
1
50
70 to 110
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