36
Table 3-9
RS-232 Status LED
Board Reference
LED Name
Description
D8
TX LED
Illuminates when RS-232 transmit is active.
D9
RX LED
Illuminates when RS-232 receiving is active.
3
3
.
.
5
5
S
S
R
R
A
A
M
M
:
:
S
S
t
t
a
a
t
t
i
i
c
c
R
R
a
a
n
n
d
d
o
o
m
m
A
A
c
c
c
c
e
e
s
s
s
s
M
M
e
e
m
m
o
o
r
r
y
y
The IS61LV25616AL SRAM (Static Random Access Memory) device is featured on the
development board. For detailed information on how to use the SRAM, please refer to the datasheet,
which is available on the manufacturer’s website, or under the Datasheets\SRAM folder on the Kit
System CD.
shows the related schematics and
lists the SRAM pin
assignments, signal names relative to the Cyclone V GX device.
Figure 3-15 Connections between the Cyclone V GX FPGA and SRAM Chip
Table 3-10
SRAM Pin Assignments, Schematic Signal Names, and Functions
Schematic
Signal Name
Description
I/O Standard
Cyclone V GX
Pin Number
SRAM_A0
Address bus
3.3-V
PIN_B25
SRAM_A1
Address bus
3.3-V
PIN_B26
SRAM_A2
Address bus
3.3-V
PIN_H19
SRAM_A3
Address bus
3.3-V
PIN_H20
SRAM_A4
Address bus
3.3-V
PIN_D25
