Altera Stratix IV GX FPGA Development Board - Manual (Page 69)

Chapter 2: Board Components 2–61
Memory
November 2010 Altera Corporation Stratix IV GX FPGA Development Board, 530 Edition Reference Manual
Table 2–55 lists the SSRAM component reference and manufacturing information.
Flash
The flash interface consists of a single synchronous flash memory device, providing
64 Mbyte interface with a 16-bit data bus. This device is part of the shared FSM Bus,
which connects to flash memory, SSRAM, and the Max II CPLD EPM2210 System
Controller.
The parameter blocks of this device are located at the bottom of the address space. The
parameter blocks are 32 K and main blocks are 128 K.
This 16-bit data memory interface can sustain burst read operations at up to 52 MHz
for a throughput of 832 Mbps. The write performance is 125 µs for a single word and
440 µs for a 32-word buffer. The erase time is 400 ms for a 32 K parameter block and
1200 ms for a 128 K main block.
Table 2–56 lists the flash pin assignments, signal names, and functions. The signal
names and types are relative to the Stratix IV GX device in terms of I/O setting and
direction.
U30.R1 Mode SRAM_MODE
2.5-V
—
(Connects to the MAX II
CPLD EPM2210 System
Controller)
U30.H11 Sleep SRAM_ZZ AJ29
Table 2–54. SSRAM Pin Assignments, Schematic Signal Names, and Functions (Part 3 of 3)
Board Reference Description
Schematic Signal Name
I/O Standard
Stratix IV GX Device
Pin Number
Table 2–55. SSRAM Component Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U30
Standard synchronous pipelined
SCD, 512K × 36 bit, 250 MHz
ISSI Inc. IS61VPS51236A-250B3 www.issi.com
Table 2–56. Flash Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 3)
Board Reference Description
Schematic Signal Name
I/O Standard
Stratix IV GX
Device
Pin Number
U32.B6 Address bus (die select) FSM_A25
2.5-V
AP30
U32.H8 Address bus FSM_A24 AN30
U32.G1 Address bus FSM_A23 AL31
U32.A8 Address bus FSM_A22 AK31
U32.C8 Address bus FSM_A21 AR32
U32.C7 Address bus FSM_A20 AP32
U32.B7 Address bus FSM_A19 AH29
U32.A7 Address bus FSM_A18 AG29
U32.D8 Address bus FSM_A17 AR35