参数资料
型号: IP-RLDRAMII
厂商: Altera
文件页数: 31/62页
文件大小: 0K
描述: IP RLDRAM II CONTROLLER
标准包装: 1
系列: *
类型: MegaCore
功能: RLDRAM II 控制器
许可证: 初始许可证
Functional Description
Figure 2–15. Read Following a Write
clk
Local Interface
local_write_req
local_read_req
local_addr[]
local_bank_addr[]
local_wdata_req
A
A
B
B
local_wdata[]
local_dm[]
local_rdata_valid[]
local_rdata[]
RLDRAM II Interface
rldramii_clk
rldramii_clk_n
rldramii_cs_n
rldramii_we_n
rldramii_ref_n
rldramii_a[]
rldramii_ba[]
A
A
01 23 45
00
B
B
67
01 23 45 67
rldramii_dm[]
rldramii_dq[ ]
11
00
0 1 23 45 6 7
0 1 2 3 4 56 7
11
rldramii_qk[]
rldramii_qvld[]
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 RC timing
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 shows a single refresh command:
Altera Corporation
November 2009
MegaCore Version 9.1 2–21
RLDRAM II Controller MegaCore Function User Guide
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