6.3.13. Clock Controller
The Clock Controller application sets the Si570 programmable oscillators to any frequency between 10 MHz and 945 MHz and select frequencies to 1400 MHz. The oscillator drives a 2-to-6 buffer that drives a copy of the clock to all transceiver blocks of the FPGA.
The Clock Control applications runs as a stand-alone application. ClockControl.exe resides in the <package dir>\examples\board_test_system directory.
The Clock Control communicates with the MAX® V device on the board throught the JTAG bus. The Si570 programmable oscillator is connected to the MAX® V device through a 2-wire serial bus.
The following sections describe the Clock Control controls
Serial Port Registers
The Target frequency control allows you to specify the frequency of the clock. Legal values are between 10 MHz and 945 MHz and select frequencies to 1400 MHz. For example, 421.31259873 is possible within 100 parts per million (ppm). The Target Frequency control works in conjunction with the Set New Frequency Control.
- Y3 = 644.53125 MHz
- Y4 = 706.25 MHz
- Y5 = 625 MHz
- Y6 = 875 MHz
Set New Frequency
Did you find the information on this page useful?