DIV - Pulse divider [x4]¶
A DIV block is a 32-bit pulse divider that can divide a pulse train between two outputs. It has an internal counter that counts from 0 to DIVISOR-1. On each rising edge of INP, if counter = DIVISOR-1, then it is set to 0 and the pulse is sent to OUTD, otherwise it is sent to OUTN. Change in any parameter causes the block to be reset.
Parameters¶
| Name | Dir | Type | Description |
|---|---|---|---|
| DIVISOR | R/W | UInt32 | Divisor value |
| FIRST_PULSE | R/W | Enum | 0 - OutN: Send first pulse to OUTN
1 - OutD: Send first pulse to OUTD
|
| FORCE_RESET | W | Action | Reset internal counter state machine |
| INP | In | Bit | Input pulse train |
| RESET | In | Bit | On rising edge, reset counter state machine |
| OUTD | Out | Bit | Divided pulse output |
| OUTN | Out | Bit | Non-divided pulse output |
| OUT | R | UInt32 | Internal counter value in range [0..DIVISOR-1) |
Which output do pulses go to¶
With a DIVISOR of 3, the block will send 1 of 3 INP pulses to OUTD and 2 of 3 INP pulses to OUTN. The following two examples illustrate how the FIRST_PULSE parameter controls the initial value of OUT, which controls whether OUTD or OUTN gets the next pulse.
(Source code, png, hires.png, pdf)
(Source code, png, hires.png, pdf)
Reset conditions¶
If an ENABLE falling edge is received at the same time as an INP rising edge, the input signal is ignored and the block reset.
(Source code, png, hires.png, pdf)
