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Avnet Electronics Marketing 12 of 28 Rev D 24 Apr 2015
2.3 Memory
The Spartan-6 FPGA LX9 MicroBoard is populated with both LPDDR mobile SDRAM memory (256 Mbit x
16) and 128 Mbit SPI Multi-I/O Flash to support various types of applications. The SPI Flash may be used for
FPGA configuration. Figure 5 shows a high-level block diagram of the memory interfaces on this board.
Figure 5 – Spartan-6 FPGA LX9 MicroBoard Memory Interfaces
S6LX9
SPI Flash
Digilent 4-Pin Flash
Progrmming Interface
LPDDR
Mobile SDRAM
DQ[15:0]
A[12:0]
BA[1:0]
LDQS
UDQS
LDM
UDM
CAS#
RAS#
WE#
CS#
CKE
CK_P/N
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