Truth Table/Functionality

The alt3pram function represents asynchronous memory or memory with synchronous inputs and/or outputs.

Synchronous Write to Memory (All Inputs Registered)
`inclock`	`inclocken`	`wren`	Function
X	L	L	No change.
not	H	H	No change.
	L	X	No change.
	H	H	The memory location pointed to by `wraddress[]` is loaded with `data[]`.

Synchronous Read from Memory
`inclock`	`inclocken`	`rden_a`/`rden_b`	Function
X	L	L	No change.
not	H	H	No change.
	L	X	No change.
	H	H	The `q_a[]`/`q_b[]`port outputs the contents of the memory location.

Totally asynchronous memory operations occur when neither inclock nor outclock is connected.

Asynchronous Memory Operations
L	No change.
H	The memory location pointed to by `wraddress[]` is loaded with `data[]` and controlled by `wren`. The output `q_a[]` is asynchronous and reflects the memory location pointed to by `rdaddress_a[]`.