4
©2019 Integrated Device Technology, Inc.
June 17, 2019
VersaClock
®
6E – 5P49V6965 and 5P49V6975 Programmer Board User Guide
JP12 and JP13 Functionality
JP12 controls the CLKSEL pin and JP13 controls the SD/OE pin on the 5P49V6965/6975. These pins have pull-down resistors on the
chip so when the pins are left open, the pins will be pulled low. When placing a jumper, the pin will be pulled high. This way the
functionality of the CLKSEL and SD/OE pins can be verified.
Figure 5. JP12 and JP13 Jumpers
J1 and JP17 Functionality
The programmer board has a 25MHz crystal assembled for use with the 5P49V6965. This 25MHz crystal is the default and recommended
crystal. To use the 25MHz crystal, place a jumper to the left on JP17, as in
. In case a different input frequency is needed, the
jumper can be moved to the right, to connect J1 to the crystal input pin on the 5P49V6965. Using an RF generator, a different frequency
can be applied to the crystal input pin through J1. The recommended amplitude is 0dBm to +3dBm or 600mVpp to 1Vpp.
The 5P49V6975 has an integrated crystal and therefore, J1 / JP17 have no function.
Figure 6. SMA and JP17 Jumper
