Altera RLDRAM II Controller MegaCore Function - Manual (Page 21)

Altera Corporation MegaCore Version 9.1 2–11
November 2009 RLDRAM II Controller MegaCore Function User Guide
Functional Description
Figure 2–7. Memory Interface
Figure 2–8. Datapath Interface
Figure 2–8 shows that any read data captured on the rising edge of the
delayed rldramii_qk[] signal is located in the lower half-bit locations
of control_rdata[]. Any read data captured on the falling edge of the
delayed rldramii_qk[] signal is located in the upper half-bit locations
rldramii_dq[35:27]
RLDRAM II
Device 1
RLDRAM II
Device 0
rldramii_qk[3]
rldramii_dq[26:18]
rldramii_qk[2]
rldramii_dq[17:9]
Data associated with rldramii_qk[] rising edge
rldramii_qk[1]
rldramii_dq[8:0]
rldramii_qk[0]
N P M N O P
I J K L
E F G H
A B C D
Data associated with rldramii_qk[] falling edge
capture_clk[1]
control_rdata[]
Data associated with rldramii_qk[] rising edge
capture_clk[0]
N P
J L
F H
E G
I K
M O
A C
B D
Data associated with rldramii_qk[] falling edge