Altera Arria II GX FPGA Development Board, 6G Edition - Manual (Page 52)

2–44 Chapter 2: Board Components
Memory
Arria II GX FPGA Development Board, 6G Edition Reference Manual © July 2010 Altera Corporation
Table 2–42 lists the DDR2 SODIMM component references and manufacturing
information.
SSRAM
The SSRAM device consists of a single standard synchronous SRAM, providing
2 Mbyte of with a 36-bit data bus. This device is part of the shared FSM bus which
connects to the flash memory, SRAM, and MAX
II CPLD EPM2210 System Controller.
The device speed is 200 MHz single-data-rate. There is no minimum speed for this
device. The theoretical bandwidth of this 32-bit memory interface is 6.4 Gbps for
continuous bursts. The read latency for any address is two clocks, in which at
200 MHz, the latency is 10 ns and at 50 MHz, the latency is 40 ns. The write latency is
one clock.
Table 2–43 lists the SSRAM pin assignments, signal names, and functions. The signal
names and types are relative to the Arria II GX device in terms of I/O setting and
direction.
J7.167 Data strobe N byte lane 6 DDR2_DQSN6
1.8-V SSTL Class I
AL12
J7.179 Data bus byte lane 7 DDR2_DQ56 AM10
J7.181 Data bus byte lane 7 DDR2_DQ57 AF15
J7.189 Data bus byte lane 7 DDR2_DQ58 AP2
J7.191 Data bus byte lane 7 DDR2_DQ59 AJ12
J7.180 Data bus byte lane 7 DDR2_DQ60 AJ16
J7.182 Data bus byte lane 7 DDR2_DQ61 AN9
J7.192 Data bus byte lane 7 DDR2_DQ62 AP3
J7.194 Data bus byte lane 7 DDR2_DQ63 AN4
J7.185 Write mask byte lane 7 DDR2_DM7 AE15
J7.188 Data strobe P byte lane 7 DDR2_DQS7 AM7
J7.186 Data strobe N byte lane 7 DDR2_DQSN7 AM8
Table 2–41. DDR2 SODIMM Pin Assignments, Signal Names and Functions (Part 4 of 4)
Board Reference Description
Schematic Signal
Name I/O Standard
Arria II GX
Device
Pin Number
Table 2–42. DDR2 SODIMM Component References and Manufacturing Information
Board
Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
J7 200-pin DDR2 SODIMM socket Tyco Electronics 1-1734075-1 www.tycoelectronics.com
Module 128 M × 8 banks, 400M, CL6 Micron MT8HTF12864HZ-800G1 www.micron.com