45
Figure 3-31 Connections between the Cyclone V SoC FPGA and FT232R Chip
Table 3-29 UART Interface I/O
Signal Name
FPGA Pin No.
Description
I/O Standard
HPS_UART_RX
PIN_B25
HPS UART Receiver
3.3V
HPS_UART_TX
PIN_C25
HPS UART Transmitter
3.3V
HPS_CONV_USB_N
PIN_B15
Reserve
3.3V
3
3
.
.
7
7
.
.
4
4
D
D
D
D
R
R
3
3
M
M
e
e
m
m
o
o
r
r
y
y
o
o
n
n
H
H
P
P
S
S
The DDR3 devices that are connected to the HPS are the exact same devices connected to the
FPGA in capacity (1GB) and data-width (32-bit), comprised of two x16 devices with a single
address/command bus. This interface connects to dedicate Hard Memory Controller for HPS I/O
banks and the target speed is 400 MHz.
Table 3-30
lists DDR3 pin assignments, I/O standards and
descriptions with Cyclone V SoC FPGA.
Table 3-30 Pin Assignments for DDR3 Memory
Signal Name
FPGA Pin No. Description
I/O Standard
HPS_DDR3_A[0]
PIN_F26
HPS DDR3 Address[0]
SSTL-15 Class I
HPS_DDR3_A[1]
PIN_G30
HPS DDR3 Address[1]
SSTL-15 Class I
HPS_DDR3_A[2]
PIN_F28
HPS DDR3 Address[2]
SSTL-15 Class I
HPS_DDR3_A[3]
PIN_F30
HPS DDR3 Address[3]
SSTL-15 Class I
HPS_DDR3_A[4]
PIN_J25
HPS DDR3 Address[4]
SSTL-15 Class I
HPS_DDR3_A[5]
PIN_J27
HPS DDR3 Address[5]
SSTL-15 Class I
HPS_DDR3_A[6]
PIN_F29
HPS DDR3 Address[6]
SSTL-15 Class I
HPS_DDR3_A[7]
PIN_E28
HPS DDR3 Address[7]
SSTL-15 Class I
HPS_DDR3_A[8]
PIN_H27
HPS DDR3 Address[8]
SSTL-15 Class I
HPS_DDR3_A[9]
PIN_G26
HPS DDR3 Address[9]
SSTL-15 Class I
HPS_DDR3_A[10]
PIN_D29
HPS DDR3 Address[10]
SSTL-15 Class I