IPR-RLDRAMII Altera, IPR-RLDRAMII Datasheet - Page 31

• Manufacturer Part Number: IPR-RLDRAMII
• Description: IP CORE Renewal Of IP-RLDRAMII
• Manufacturer: Altera
• Series: Memory Controllers - SDRAMr
• Type: MegaCorer

Specifications of IPR-RLDRAMII

• Software Application: IP CORE, Memory Controllers, SDRAM
• Tool Function: Intellectual Property (IP) Core
• Supported Devices: HardCopy, Stratix
• Function: RLDRAM II Controller
• License: Renewal License
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

Figure 2–15. Read Following a Write
Altera Corporation
November 2009
RLDRAM II Interface
local_bank_addr[]
local_rdata_valid[]
local_wdata_req
local_write_req
Local Interface
local_read_req
rldramii_clk_n
rldramii_we_n
rldramii_qvld[]
rldramii_ref_n
rldramii_cs_n
local_wdata[]
rldramii_dm[]
rldramii_dq[ ]
local_rdata[]
rldramii_ba[]
rldramii_qk[]
local_addr[]
rldramii_clk
rldramii_a[]
local_dm[]
clk
Refreshes
You must issue refreshes to the RLDRAM II devices at periodic intervals.
When a refresh is required, assert local_refresh_req and the
RLDRAM II controller issues the refresh command immediately to the
requested bank address on local_bank_addr[] input. You must
correctly insert the refresh request and ensure that the t
parameter is not violated. You can issue single or ganged refreshes. For
ganged refreshes assert local_refresh_req for X clock cycles, where
X is the number of refreshes that you require.
Figure 2–16
A
A
A
A
A
A
shows a single refresh command:
MegaCore Version 9.1
B B
B B
11
RLDRAM II Controller MegaCore Function User Guide
01 23 45
0 1 2 3 4 5 6 7
00
00
0 1 2 3 4 5 6 7 7
B
B
01 23 45 67
Functional Description
67
67
RC
timing
11
2–21