Chapter 2: Board Components
2–43
Memory
May 2013
Altera Corporation
Cyclone V GX FPGA Development Board
Reference Manual
Flash
The development board supports a 512-MB CFI-compatible synchronous flash device
for non-volatile storage of FPGA configuration data, board information, test
application data, and user code space. This device is part of the shared FSM bus that
connects to the flash memory, SSRAM, and MAX V CPLD 5M2210 System Controller.
This 16-bit data memory interface can sustain burst read operations at up to 52 MHz
for a throughput of 832 Mbps per device. The write performance is 270 µs for a single
word buffer while the erase time is 800 ms for a 128 K array block.
Table 2–32
lists the flash pin assignments, signal names, and functions. The signal
names and types are relative to the Cyclone V GX in terms of I/O setting and
direction.
72
FSM_D6
A8
2.5-V
Data bus
73
FSM_D7
B7
2.5-V
Data bus
23
FSM_D8
B8
2.5-V
Data bus
22
FSM_D9
C9
2.5-V
Data bus
19
FSM_D10
A9
2.5-V
Data bus
18
FSM_D11
A10
2.5-V
Data bus
12
FSM_D12
C10
2.5-V
Data bus
13
FSM_D13
D9
2.5-V
Data bus
8
FSM_D14
A11
2.5-V
Data bus
9
FSM_D15
B11
2.5-V
Data bus
85
SRAM_ADSCN
P12
2.5-V
Address status controller
84
SRAM_ADSPN
J13
2.5-V
Address status processor
83
SRAM_ADVN
K13
2.5-V
Adress valid
93
SRAM_BWAN
P10
2.5-V
Byte write select
94
SRAM_BWBN
N11
2.5-V
Byte write select
97
SRAM_CE2
—
2.5-V
Chip enable 2
92
SRAM_CE3N
—
2.5-V
Chip enable 3
98
SRAM_CEN
K11
2.5-V
Chip enable 1
89
SRAM_CLK
N12
2.5-V
Clock
88
SRAM_GWN
—
2.5-V
Global write enable
31
SRAM_MODE
—
2.5-V
Burst sequence selection
64
SRAM_ZZ
—
2.5-V
Power sleep mode
Table 2–31. SSRAM Pin Assignments, Schematic Signal Names, and Functions (Part 2 of 2)
Board
Reference (U37)
Schematic
Signal Name
Cyclone V GX
Pin Number
I/O Standard
Description
Table 2–32. Flash Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 3)
Board
Reference (U18)
Schematic Signal Name
Cyclone V GX
Pin Number
I/O Standard
Description
F6
FLASH_ADVN
H15
2.5-V
Address valid
B4
FLASH_CEN
L10
2.5-V
Chip enable