Specifications

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.