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Chip Layout Screen
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3.3 Chip Layout Screen
The chip layout screen can be accessed by double clicking on the left mouse
button in the Help section of the main program screen. The chip layout screen
appears as a simplified internal schematic of the TRF4900 as shown in
Figure 3−2.
3-6
PLL and MM Options
APLL:
Use the arrows beside the box to select from values of 0,
20, 40, 60, 80, 100, 120, and 140.
NPLL:
Click inside the box to change the divide-by-N value
between 256 and 512. The value of PreScaler under
Synthesizer changes when the NPLL value changes.
MM:
Modulation Mode is fixed to FSK Modulation Mode.
LPT Port
LPT_x:
Click inside the box to chose between PC parallel ports
LPT 1 or LPT 2.
Help
Help:
When any box on the main program screen is selected
(clicked inside of box with mouse), the Help screen
displays the valid selections for that box. Double clicking
inside the Help box cause the chip layout screen to be
displayed as shown in Figure 3−2.
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