_________________________________________________________________________________________ DS3106DK
4
1.
Board Floorplan
shows the DS3106DK floorplan. The DS3106 is in the center of the board, input clock SMB connectors
are along the left edge of the board, and output clock connectors are on the right edge. Between the input clock
connectors and the DS3106, land patterns are provided for several different types of local oscillators, ranging from
inexpensive XOs to higher performance TCXOs. The top edge contains, from left to right, power-supply
connectors, DC-DC converters and power-indicator LEDs, reset pushbutton, serial connector, and USB connector.
An on-board DS87C520 microcontroller is located near the USB connector. The bottom edge of the board is
occupied by a JTAG connector and LED indicators. The DS3106DK has the same PCB design as demo kits for
timing ICs with more clock I/Os. As a result, many of the connectors are not populated in the DS3106DK. See
Appendix 1: Hardware Components
for a complete component list. Complete board schematics follow in Section
Figure 1-1. DS3106DK Board Floorplan
