SoCKit User Manual
38
www.terasic.com
December 1, 2015
Table 3-23 Tri-Color Dual LED Mode-Pin Definition
LED (State)
LED (Definition)
Link /Activity
LED2
LED1
LED2
LED1
H H
OFF
OFF
Link
off
L
H
ON
OFF
1000 Link / No Activity
Toggle
H
Blinking
OFF
1000 Link / Activity (RX, TX)
H
L
OFF
ON
100 Link / No Activity
H
Toggle
OFF
Blinking
100 Link / Activity (RX, TX)
L
L
ON
ON
10 Link/ No Activity
Toggle
Toggle
Blinking
Blinking
10 Link / Activity (RX, TX)
3
3
.
.
7
7
.
.
3
3
U
U
A
A
R
R
T
T
The board has one UART interface connected for communication with the HPS. This interface
wouldn’t support HW flow control signals. The physical interface is done using UART-USB
onboard bridge from an FT232R chip and connects to the host using a Mini-USB (B) connector. For
detailed information on how to use the transceiver, please refer to the datasheet, which is available
on the manufacturer’s website, or in the Datasheets\FT232 folder on the SoCKit System CD.
Figure 3-23
shows the related schematics, and
Table 3-24
lists the pin assignments of HPS in
Cyclone V SoC FPGA.
Figure 3-23 Connections between the Cyclone V SoC FPGA and FT232R Chip
Table 3-24 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
