prim_cg_req

Drive Q-Channel qreq_no from qactive_i, qaccept_ni, and qdeny_i.

qreq_no is the active-low quiescence request: it follows qactive_i, so it falls, asking for the clock to stop, once the device is idle. After a deny, hold qreq_no high (request withdrawn) for DENY_DELAY cycles before it follows qactive_i again; an accept clears the hold. HysteresisW sizes the deny-hold counter.

Parameters

Table 1. Parameters
Name	Type	Default	Description
`DENY_DELAY`	`int unsigned`	`1`	Cycles to hold after a deny before reasserting.
`HysteresisW`	`int unsigned`	`(DENY_DELAY <= 1) ? 1 : $clog2(DENY_DELAY+1)`	Deny-hold counter width.

Ports

Table 2. Ports
Name	Direction	Type	Description
`clk_i`	input	`logic`	Q-Channel clock.
`rst_ni`	input	`logic`	Async reset, active-low.
`qactive_i`	input	`logic`	Device wants the clock.
`qaccept_ni`	input	`logic`	Device accepted the quiescence request, active-low.
`qdeny_i`	input	`logic`	Device denied the quiescence request; starts the deny hold.
`qreq_no`	output	`logic`	Quiescence request to the device, active-low; low asks for the clock to stop.