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ZYNQ Ultr FPGA Board AXU4EV-E User Manual
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When the network is connected to Gigabit Ethernet, the data transmission
of ZYNQ and PHY chip KSZ9031RNX is communicated through the RGMII bus,
the transmission clock is 125Mhz, and the data is sampled on the rising edge
and falling samples of the clock.
When the network is connected to 100M Ethernet, the data transmission of
ZYNQ and PHY chip KSZ9031RNX is communicated through RMII bus, and
the transmission clock is 25Mhz. Data is sampled on the rising edge and falling
samples of the clock.
Figure 3-5-1: ZYNQ PS system and GPHY connection diagram
The Gigabit Ethernet pin assignments are as follows:
Signal Name
Pin Name
Pin Number
Description
PHY1_TXCK
PS_MIO64
E19
Ethernet 1 RGMII Transmit Clock
PHY1_TXD0
PS_MIO65
A18
Ethernet 1 Transmit data bit0
PHY1_TXD1
PS_MIO66
G19
Ethernet 1 Transmit data bit1
PHY1_TXD2
PS_MIO67
B18
Ethernet 1 Transmit data bit2
PHY1_TXD3
PS_MIO68
C18
Ethernet 1 Transmit data bit3
PHY1_TXCTL
PS_MIO69
D19
Ethernet 1 Transmit Enable Signal
PHY1_RXCK
PS_MIO70
C19
Ethernet 1 RGMII Receive Clock