DS567 XILINX [Xilinx, Inc], DS567 Datasheet - Page 8

• Manufacturer Part Number: DS567
• Description: DDR2 Memory Controller for PowerPC 440 Processors
• Manufacturer: XILINX [Xilinx, Inc]

DDR2 Memory Controller for PowerPC 440 Processors
8
Parameter - Port Dependencies
Table 4
channelized access memory controller, the user must be aware of unused I/Os based on the
configuration of each port. The designer must also be aware of the external memory interface signals
based on the type of memory utilized in the system.
Table 4: Parameter-Port Dependencies
C_NUM_CLK_PAIRS
C_NUM_RANKS_MEM DDR_CKE,
C_DDR_DWIDTH
C_DDR_DQS_WIDTH
C_DDR_DM_WIDTH
C_DDR_RAWIDTH
C_DDR_BAWIDTH
DDR_Clk, DDR_Clkn
DDR_CKE, DDR_CSn
DDR_DQ
DDR_DQS
DDR_DM
DDR_Addr
DDR_BankAddr
DDR_DQS_N,
DDR_ODT
illustrates the port and parameter dependencies. With the configuration flexibility of the
Name
DDR_Clk, DDR_Clkn
DDR_CSn,
DDR_ODT,
C_MEM_BASEADDR,
C_MEM_HIGHADDR
DDR_DQ
DDR_DQS,
DDR_DQS_N
DDR_DM
DDR_Addr
DDR_BankAddr
Affects
Design Parameters
www.xilinx.com
I/O Signals
C_MEM_TYPE
C_NUM_CLK_PAIRS
C_NUM_RANKS_MEM Size depends on
C_DDR_DWIDTH
C_DDR_DQS_WIDTH
C_DDR_DM_WIDTH
C_DDR_RAWIDTH
C_DDR_BAWIDTH
C_NUM_MEM_RANKS Size depends on parameter setting.
Depends
Affects size of signals.
Affects size of signals.
Parameter affects size of DDR DQ
signals.
Parameter affects size of DDR DQS
signals.
Parameter affects size of DDR DM
signals.
Affects size of signal.
Affects size of signal.
Size depends on
C_NUM_CLK_PAIRS parameter.
C_NUM_RANKS_MEM parameter.
Size depends on parameter setting.
Size depends on parameter setting.
Size depends on parameter setting.
Size depends on parameter setting.
Size depends on parameter setting.
Relationship Description
DS567 (v1.1.1) March 31, 2008