Input Ports

clock

Yes

Write clock for RAM. Read clock for

ROM.

clken

No

Clock enable input port.

Values are 0 (disabled) and 1 (enabled). If omitted, the default value is 1.

init

Yes

Initialization from ROM enable.

When asserted high, the init signal directs the megafunction to begin initializing from ROM.

datain[]

No

Data input from external ROM.

Input port [(width-1)..0] wide. This port is applicable in the external ROM mode only.

rom_data_ready

No

Input port for external-ROM mode.

When the PORT_ROM_DATA_READY parameter value is set to "PORT_USED", the rom_data_ready port is used in the external ROM mode. Assert this signal for each word of data when the altmem_init megafunction is ready to read the data.