参数资料
型号: IP-RLDRAMII
厂商: Altera
文件页数: 17/62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 2–4. DQS Group Block Diagram—DQS Mode, CIO 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
DQ
control_wdata_valid
D
Q
D
Q
1
EN
control_rdata
2W
W
write_clk
Q
D
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 DQ output only.
All clocks are clk , unless marked otherwise.
Bus width W is dependent on the DQ 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 DQ pin.
This inversion is automatic if you use an altdq megafunction for the DQ pins.
Figure 2–5 on page 2–8 shows the Stratix II series and HardCopy II
devices DQS group block diagram (DQS mode, SIO devices).
Altera Corporation
November 2009
MegaCore Version 9.1 2–7
RLDRAM II Controller MegaCore Function User Guide
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