Altera Cyclone III LS FPGA Development Board - Manual (Page 47)

Chapter 2: Board Components 2–39
Memory
© October 2009 Altera Corporation Cyclone III LS FPGA Development Board Reference Manual
Table 2–39 lists the DDR2 component references and manufacturing information.
SSRAM
The SSRAM device consists of a single standard synchronous SRAM, providing
2 Mbyte 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 2–40 lists the SSRAM pin assignments, signal names, and functions. The signal
names and types are relative to the Cyclone III LS device in terms of I/O setting and
direction.
Table 2–39. DDR2 Component References and Manufacturing Information
Board
Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U5 and U6 8 M × 16 × 4 banks, 512 Mbit,
667 Mbps, CL5 Micron MT47H32M16HR-3:F www.micron.com
Table 2–40. SSRAM Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 3)
Board Reference Description Schematic Signal Name I/O Standard
Cyclone III LS Device
Pin Number
U14.R6 Address bus FSM_A2
2.5-V
AA17
U14.P6 Address bus FSM_A3 AE12
U14.A2 Address bus FSM_A4 AF21
U14.A10 Address bus FSM_A5 AH2
U14.B2 Address bus FSM_A6 AB12
U14.B10 Address bus FSM_A7 AG24
U14.N6 Address bus FSM_A8 AE25
U14.P3 Address bus FSM_A9 AH21
U14.P4 Address bus FSM_A10 AD25
U14.P8 Address bus FSM_A11 AC9
U14.P9 Address bus FSM_A12 AF4
U14.P10 Address bus FSM_A13 AE10
U14.P11 Address bus FSM_A14 AH26
U14.R3 Address bus FSM_A15 AG22
U14.R4 Address bus FSM_A16 AF12
U14.R8 Address bus FSM_A17 AE19
U14.R9 Address bus FSM_A18 AA9
U14.R10 Address bus FSM_A19 AE6
U14.R11 Address bus FSM_A20 AG18
U14.B1 Address bus FSM_A21 AE11