
Chapter 2: Board Components
2–45
Memory
February 2011
Altera Corporation
Arria II GX FPGA Development Board Reference Manual
Table 2–43
lists the DDR2 SODIMM component references and manufacturing
information.
SSRAM
The SSRAM device consists of a single standard synchronous SRAM, providing 2 MB
of memory 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 2–44
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 2–42. 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 2–43. 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
MT8HTF12864HY-800G1
www.micron.com
Table 2–44. SSRAM Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 3)
Board Reference
Description
Schematic Signal Name
I/O Standard
Arria II GX Device
Pin Number
U22.R6
Address bus
FSM_A2
2.5-V
D29
U22.P6
Address bus
FSM_A3
J21
U22.A2
Address bus
FSM_A4
L13
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from