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Datapath – Altera RLDRAM II Controller MegaCore Function User Manual

Page 13

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Altera Corporation

MegaCore Version 9.1

2–3

November 2009

RLDRAM II Controller MegaCore Function User Guide

Functional Description

Table 2–1

shows the RLDRAM II control signals generated by the control

logic for each operation.

Datapath

Figure 2–2 on page 2–4

shows the datapath block diagram.

Table 2–1. Control Signals

Operation

Acronym

rldramii

_cs_n_0

rldramii

_we_n_0

rldramii

_ref_n_0

rldramii

_a_0[20:0]

rldramii

_ba_0[2:0]

Idle

NOP

High

Don’t care

Don’t care

Don’t care

Don’t care

Mode
Register
Set

MRS

Low

Low

Low

See your
RLDRAM data
sheet

Don’t care

Read

READ

Low

High

High

Address

Bank address

Write

WRITE

Low

Low

High

Address

Bank address

Auto
Refresh

AREF

Low

High

Low

Don’t care

Bank address