km_kpv_regfile

Store KPV key data in a single-write, single-read register file.

Stores NUM_SLOTS x WORDS_PER_SLOT entries of DATA_WIDTH bits.

Write port: KM; in km_kpv it carries CPU writes and, while an erase runs, the eraser's writes.
Read port: KM only (combinational, zero-latency).

Key data storage has no reset: the power-up value is undefined for security. The wipe input provides a synchronous bulk-clear of all entries and takes priority over a write in the same cycle.

Parameters

Table 1. Parameters
Name	Type	Default	Description
`NUM_SLOTS`	`int unsigned`	`64`	Number of key slots.
`WORDS_PER_SLOT`	`int unsigned`	`16`	Key-data words in each slot; the file holds NUM_SLOTS * WORDS_PER_SLOT entries.
`DATA_WIDTH`	`int unsigned`	`32`	Data width in bits.

Ports

Table 2. Ports
Name	Direction	Type	Description
`clk_i`	input	`logic`	System clock.
`wipe_i`	input	`logic`	Bulk wipe: zeroes ALL entries on the next clock edge, overriding any write.
`wr_a_en_i`	input	`logic`	KM write port enable.
`wr_a_addr_i`	input	`logic [$clog2(NUM_SLOTS*WORDS_PER_SLOT)-1:0]`	KM write port flat address.
`wr_a_data_i`	input	`logic [DATA_WIDTH-1:0]`	KM write port data.
`rd_addr_i`	input	`logic [$clog2(NUM_SLOTS*WORDS_PER_SLOT)-1:0]`	KM-only read port flat address.
`rd_data_o`	output	`logic [DATA_WIDTH-1:0]`	KM-only read data (combinational).