Gen bit

Type Function module

Input IN0	DWORD (bit sequence for Q0)
IN1	DWORD (bit sequence for Q1)
IN2	DWORD (bit sequence for Q1)
IN3	DWORD (bit sequence for Q1)
CLK	BOOL (clock input)
STEPS	INT (number of generated clocks)
REP	INT
RST	BOOL
Output Q0	BOOL (bit sequence Q0)
Q1	BOOL (bit sequence Q1)
Q2	BOOL (bit sequence Q2)
Q3	BOOL (bit sequence Q3)
CNT	INT (number of output bits already generated)
RUN	BOOL (TRUE if the sequencer is running)
	GEN_BIT is a fully programmable pattern generator. At the inputs in0 .. IN7 are the bit patterns at the input CLK in each case as a DWORD and passed by each clock pulse to the outputs Q0 .. Q3 starting from bit 0 of ascending. After the first clock pulse at the input CLK the output Q0 has bit 0 of IN0 , at Q1 is bit 0 of In1 ... on Q7 is bit 0 of IN3. After the next clock pulse at the CLK input, the bit 1 of the inputs IN is passed to the outputs Q and so on, until the sequence is completed. The input STEPS determines how many bits of the input DWORDS be passed to the outputs. The input REP determines how often this sequence is repeated. If the input set to 0, the sequence is repeated continuously. An asynchronous reset can always reset the sequencer. The outputs CNT and RUN indicate which bit is currently passed to the output and whether the sequencer is running, or the sequence (RUN inactive) has finished. After the sequences have expired the last bit patterns remains on the outputs available until a reset restarts the generator.

Example:

Example: In this example, the lowest 8 bits (bits 0 .. 7) at the inputs IN are pushed to the outputs Q. The sequence begins with bit 0 and ends at bit 7 (8 Steps are defined by the input 8). This sequence is repeated 2 times (2 repetitions at the input REP) and then stopped. The Trace Recording shows the reset signal becoming inactive (green), which starts the generator and after the first clock pulse passes bit 0 to the outputs.