参数资料
型号: IP-RLDRAMII
厂商: Altera
文件页数: 18/62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
Block Description
Figure 2–5. DQS Group Block Diagram—DQS Mode, SIO Devices
Note (1) , (2) , (3)
control_doing_wr
D
Q
dq_oe
D
Q
control_wdata
2W
W
D
W
EN
Q
D
Q
0
D
control_wdata_valid
D
Q
D
Q
1
EN
control_rdata
2W
W
write_clk
Q
D
Q
W
Q
D
Q
D
dq_capture_clk
DQS
capture_clk
Notes to Figure 2–4 :
Note 4
DQS Delay
(1)
(2)
(3)
(4)
This figure shows the logic for one Q output and one D input only.
All clocks are clk , unless marked otherwise.
Bus width W is dependent on the Q per DQS parameter.
Invert combout of the I/O element (IOE) for the dqs pin before feeding in to inclock of the IOE for the Q pin.
This inversion is automatic if you use an altdq megafunction for the Q pins.
Datapath Example
Figure 2–6 shows an example datapath. The example RLDRAM II
controller and memory configuration has the following parameters:
DQS mode
Two 18-bit CIO RLDRAM II devices. Each RLDRAM II device has
two rldramii_qk[] data strobes, each associated with 9-bits of
data
36-bit RLDRAM II interface, which requires a 72-bit datapath
interface
2–8 MegaCore Version 9.1
RLDRAM II Controller MegaCore Function User Guide
Altera Corporation
November 2009
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