Altera Cyclone V E FPGA Development Board - Manual (Page 40)

2–32 Chapter 2: Board Components
Memory
Cyclone V E FPGA Development Board March 2013 Altera Corporation
Reference Manual
Memory
This section describes the development board’s memory interface support and also
their signal names, types, and connectivity relative to the Cyclone V E FPGA. The
development board has the following memory interfaces:
■ DDR3 SDRAM
■ LPDDR2 SDRAM
■ EEPROM
■ Synchronous SRAM
■ Synchronous flash
f
For more information about the memory interfaces, refer to the following documents:
■ Timing Analysis section in the External Memory Interface Handbook.
■ DDR, DDR2, and DDR3 SDRAM Design Tutorials section in the External Memory
Interface Handbook.
DDR3 SDRAM
The development board supports two 16Mx16x8 and two 16Mx8x8 DDR3 SDRAM
interfaces for very high-speed sequential memory access.
The 32-bit data bus comprises of two x16 devices using soft memory controller (SMC)
interface. With SMC, this memory interface runs at a target frequency of 300 MHz for
a maximum theoretical bandwidth of over 9.6 Gbps. The maximum frequency for this
DDR3 device is 800 MHz with a CAS latency of 11.
Table 2–24 lists the DDR3 pin assignments, signal names, and functions. The signal
names and types are relative to the Cyclone V E FPGA in terms of I/O setting and
direction.
Table 2–24. DDR3 Device Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 4)
Board
Reference
Schematic
Signal Name
Cyclone V E FPGA
Pin Number
I/O Standard Description
DDR3 x16 (U8)
N3 DDR3_A0 A16 1.5-V SSTL Class I Address bus
P7 DDR3_A1 G23 1.5-V SSTL Class I Address bus
P3 DDR3_A2 E21 1.5-V SSTL Class I Address bus
N2 DDR3_A3 E22 1.5-V SSTL Class I Address bus
P8 DDR3_A4 A20 1.5-V SSTL Class I Address bus
P2 DDR3_A5 A26 1.5-V SSTL Class I Address bus
R8 DDR3_A6 A15 1.5-V SSTL Class I Address bus
R2 DDR3_A7 B26 1.5-V SSTL Class I Address bus
T8 DDR3_A8 H17 1.5-V SSTL Class I Address bus
R3 DDR3_A9 D14 1.5-V SSTL Class I Address bus
L7 DDR3_A10 E23 1.5-V SSTL Class I Address bus