Uart - Terasic De1-Soc User Manual

HPS_ENET_TX_DATA[1]
HPS_ENET_TX_DATA[2]
HPS_ENET_TX_DATA[3]
HPS_ENET_RX_DV
HPS_ENET_RX_DATA[0]
HPS_ENET_RX_DATA[1]
HPS_ENET_RX_DATA[2]
HPS_ENET_RX_DATA[3]
HPS_ENET_RX_CLK
HPS_ENET_RESET_N
HPS_ENET_MDIO
HPS_ENET_MDC
HPS_ENET_INT_N
HPS_ENET_GTX_CLK
Additionally, the Ethernet PHY (KSZ9021RNI) LED status has been set to two LED mode. The
LED control signals are connected to LEDs (yellow and green) on the RJ45 connector. States and
definitions can be found in
example once the green LED lights on , the board has been connected to Giga bit Ethernet.
LED (State)
LEDG LEDY
H H
L H
Toggle H
H L
H Toggle
L L
Toggle Toggle
3 . 7 . 3 U A R T
3 . 7 . 3 U A R 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 an USB Mini-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\UART TO USB folder on the DE1-SoC System
CD. Figure 3-31 shows the related schematics, and
Cyclone V SoC FPGA.
PIN_J19 MII transmit data[1]
PIN_F21 MII transmit data[2]
PIN_F19 MII transmit data[3]
PIN_K17 GMII and MII receive data valid
PIN_A21 GMII and MII receive data[0]
PIN_B20 GMII and MII receive data[1]
PIN_B18 GMII and MII receive data[2]
PIN_D21 GMII and MII receive data[3]
PIN_G20 GMII and MII receive clock
PIN_E18 Hardware Reset Signal
PIN_E21 Management Data
PIN_B21 Management Data Clock Reference
PIN_C19 Interrupt Open Drain Output
PIN_H19 GMII Transmit Clock
Table 3-28, which can display the current status of the Ethernet. For
Table 3-28 LED Mode-Pin Definition
LED (Definition)
LEDG LEDY
OFF OFF
ON OFF
Blinking OFF
OFF ON
OFF Blinking
ON ON
Blinking Blinking
Link /Activity
Link off
1000 Link / No Activity
1000 Link / Activity (RX, TX)
100 Link / No Activity
100 Link / Activity (RX, TX)
10 Link/ No Activity
10 Link / Activity (RX, TX)
Table 3-29 lists the pin assignments of HPS in
44
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V