158004.B00
B5
LK20 PanelLink
Power
This link is only present on the Rev B TP400 PCB. It is used to route either 3.3V or
5V to the 10-way PanelLink connector.
3.3V to J7:
Link 1 – 2 (Default)
5V to J7:
Link 2 - 3
LK100 - LK102
Processor Clock Speed
These three pins set the Geode GX1 processor clock speed. They are normally
factory set and need not be changed. However, users may want to reduce the
processor clock speed to reduce power consumption. The 333MHz links are shown
here for completeness, although National Semiconductor have not released the
processor at this speed. The 133MHz speed should not be used. The changes are
made as follows:
CPU SPEED
LK100
LK101
LK102
133MHz (test)
Fit Link
Fit Link
Fit Link
133MHz
Omit Link
Fit Link
Fit Link
166MHz
Fit Link
Omit Link
Omit Link
200MHz
Omit Link
Fit Link
Omit Link
233MHz
Omit Link
Omit Link
Fit Link
266MHz
Omit Link
Omit Link
Omit Link
300MHz
Fit Link (default)
Omit Link (default)
Fit Link (default)
333MHz
Fit Link
Fit Link
Omit Link
TABLE B2 - PROCESSOR CLOCK SPEED
LK103 A/D Converter Input ADC3
This link is used to connect the analog to digital converter input ADC3 to the on-board
temperature sensor.
ADC3 is connected to on-board temperature sensor: Install link (Default)
ADC3 may be supplied externally:
Omit link.
Summary of Contents for 104-plus
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Page 91: ...158004 B00 C5 FIGURE C4 DAUGHTER BOARD BOTTOM COMPONENT PLACEMENT ...
Page 92: ...C6 158004 B00 FIGURE C5 MAIN BOARD MECHANICAL DIMENSIONS ...
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Page 136: ...J2 164004 C03 FIGURE J1 TP400ET MECHANICAL DRAWINGS FIGURE J2 TP400ET CIRCUIT DIAGRAM ...
Page 138: ...K2 158004 B00 FIGURE K1 TP300USB MECHANICAL DRAWINGS FIGURE K2 TP300USB CIRCUIT DIAGRAM ...