Altera Internal Memory (RAM and ROM) IP Core Instrukcja Użytkownika Pobierz pdf (Strona 12)

Table 3-1: Embedded Memory Blocks in Altera Devices

Device

Family

Memory Block Type

M512

(512

bits)

(1)

M4K (4

Kbits)

M-RAM

(512

Kbits)

(2)

MLAB

(640 bits)

(3)

M9K (9

Kbits)

M144K

(144

Kbits)

M10K (10

Kbits)

M20K

(20

Kbits)

Logic Cell

(LC)

Arria II

— — — Yes Yes — — — Yes

Arria II

— — — Yes Yes Yes — — Yes

Arria V — — — Yes — — Yes — Yes

Cyclone

— — — — Yes — — — Yes

Cyclone

— — — Yes — — Yes — Yes

Max II — — — — — — — — Yes

Stratix IV — — — Yes Yes Yes — — Yes

Stratix V — — — Yes — — — Yes Yes

Note: To identify the type of memory block that the software selects to create your memory, refer to the

Fitter report after compilation.

Write and Read Operations Triggering

The embedded memory blocks vary slightly in its supported features and behaviors. One important

variation is the difference in the write and read operations triggering.

Table 3-2: Write and Read Operations Triggering for Embedded Memory Blocks

This table lists the write and read operations triggering for various embedded memory blocks.

Embedded Memory Blocks Write Operation

(4)

Read Operation

M10K Rising clock edges Rising clock edges

M20K Rising clock edges Rising clock edges

M144K Rising clock edges Rising clock edges

M9K Rising clock edges Rising clock edges

(1)

M512 blocks are not supported in true dual-port RAM mode, and dual-port ROM mode.

(2)

M-RAM blocks are not supported in ROM mode.

(3)

MLAB blocks are not supported in simple dual-port RAM mode with mixed-width port feature, true dual-

port RAM mode, and dual-port ROM mode.

(4)

Write operation triggering is not applicable to ROMs.

3-2

Write and Read Operations Triggering

UG-01068

2014.12.17

Altera Corporation

Embedded Memory Functional Description

Send Feedback

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 56 57

Komentarze do niniejszej Instrukcji

Brak uwag

Altera Internal Memory (RAM and ROM) IP Core Instrukcja Użytkownika Strona 12

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Urządzenia pomiarowe Altera Internal Memory (RAM and ROM) IP Core