Altera Internal Memory (RAM and ROM) IP Core Instrukcja Użytkownika Pobierz pdf (Strona 41)

Parameter Legal Values Description

What should the ‘q_a’ output be when reading from

a memory location being written to?

• New data

• Old Data

Specifies the output behavior

when read-during-write

occurs.

• New Data—New data is

available on the rising

edge of the same clock

cycle on which it was

written.

• Old Data—The RAM

outputs reflect the old

data at that address before

the write operation

proceeds.

What should the ‘q_b’ output be when reading

from a memory location being written to?

Get x’s for write masked bytes instead of old data

when byte enable is used

On/Off Turn on this option to obtain

‘X’ on the masked byte.

Parameter Settings: Mem Init

Do you want to specify the initial content of the

memory?

• No, leave it blank

• Yes, use this file

for the memory

content data

Specifies the initial content

of the memory.

To initialize the memory to

zero, select No, leave it

blank.

To use a memory initializa‐

tion file (.mif) or a hexadec‐

imal (Intel-format) file (.hex)

, select Yes, use this file for

the memory content data.

ROM: 1-PORT IP Core Parameters

This table lists the parameters for the ROM: 1-PORT IP Core.

Table 4-4: ROM: 1-PORT IP Core Parameters

Parameter Legal Values Description

Parameter Settings: General Page

How wide should the ‘q’ output bus be? — Specifies the width of the ‘q’

output bus.

How many <X>-bit words of memory? — Specifies the number of <X>-

bit words.

4-16

ROM: 1-PORT IP Core Parameters

UG-01068

2014.12.17

Altera Corporation

Embedded Memory Signals and Parameters

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