Truth Table/Functionality

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Synchronous Read or Write to Memory (all inputs registered)
`inclock`	`we`	`outenab`	Function
	L	L	High impedance (output not enabled).
	X	H	The memory location pointed to by `address[]` is read to `dio[]`.
	H	L	`dio[]` is written to the memory location pointed to by `address[]`.

For devices withEmbedded System Blocks (ESBs)orEmbedded Array Blocks (EABs), the lpm_ram_iomegafunction internally writes the data to memory while the write clock is low.

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Synchronous Read from Memory
`outclock`	`we`	`outenab`	Function
	L	H	The output register is loaded with the contents of the memory location pointed to by `address`. `dio[]` outputs the contents of the output register.
not	L	H	No change. `dio[]` is held constant until the next clock. Data changes on next `outclock`.

Totally asynchronous memory operations occur when neither inclock nor outclock is connected. The output q is asynchronous and reflects the data in the memory location pointed to by address[].

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Asynchronous Memory Operations
`we`	`outenab`	Function
L	L	High impedance (output not enabled).
X	H	No change (No `we`).
H	L	`dio[]` is written to the memory location pointed to by `address[]`. The `address[]` port should not change while `we` is high (`outenab` is low). If the data on the `address[]` port changes while `we` is high (`outenab` is low), all memory locations that are addressed are overwritten with `dio`.

Note:

Note: we does not act as a clock enable for the outclock output clock.