2.1. bc635PCIcfg.exe Windows Application Program
Signals > Frequency
The Frequency function allows the user to control the frequency signal output by the TFP. The avail-
able frequencies are 1, 5 and 10 MHz. See the CONTROL Register described in "CONTROL Reg-
ister (0x10)" on page 28 for more detail.
Signals > Interrupts
The Interrupts function allows the user to control the generation of interrupts by the TFP. The detec-
tion of an interrupt will be displayed in the background of the main window by seven LEDs which are
displayed in the upper-right corner. When an interrupt occurs, the program queries the interrupt source
and the associated LED is displayed in red. In order to display consecutive interrupts, the LEDs are
changed back to green once per second. This may result in LEDs only remaining red for a short period
of time.
The default state of the interrupts is OFF. Interrupt programming is described in detail in "MASK Reg-
ister (0x18)" on page 31.
Signals > Current Settings
The Current Settings function provides a summary of all the signal data. In addition to the pro-
grammable values, other values may be presented as information points.
Hardware Menu
See Figure 2-7. This group provides additional access to functions that control the oscillator and its
associated disciplining circuits. These functions modify the actual oscillator control function used to
slave the oscillator to the selected reference signal. This function is not modified during standard oper-
ation.
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