Xilinx VCU128 User Manual

Table 26: XCVU37P U1 to QSFP28 Module Control and I2C Connections (cont'd)
FPGA (U1) Pin
Schematic Net
Name
1
,
2
FPGA (U1)
Direction
Module Pin Num Module Pin Name
U54.20 QSFP4_I2C_SCL Output 11 SCL
Notes:
1. The QSFP28 connector control signals are level-shifted.
2. The four QSFP28 connector I2C SCL/SDA signals are connected via I2C switch U54 to the I2C1_SCL/SDA bus. See I2C
Bus, Topology, and Switches section
For addional informaon about the quad small form factor pluggable (28 Gb/s QSFP28) module,
see the SFF-8663 and SFF-8679 specicaons for the 28 Gb/s QSFP+ on the SNIA Technology
Aliates website.
10/100/1000 Mb/s Tri-speed Ethernet PHY
[Figure 2, callout 22]
The VCU128 evaluaon board uses the TI PHY device DP83867ISRGZ (U62) for Ethernet
communicaons at 10 Mb/s, 100 Mb/s, or 1000 Mb/s. The board supports SGMII mode only.
The PHY connecon to a user-provided Ethernet cable is through RJ-45 connector P2, a Wurth
7499111221A with built-in magnecs and status LEDs. On power-up, or on reset, the PHY is
congured to operate in SGMII mode with PHY address[4:0] = 00011. The following table lists
the FPGA U1 to U62 DP83867ISRGZ Ethernet PHY connecons. This table also shows the net
names for the connecons from the FPGA to the Ethernet PHY. ENET_SGMII_IN correlates with
the SGMII_TX ports in the FPGA design, and ENET_SGMII_OUT correlates with the SGMII_RX
ports.
Table 27: XCVC37P U1 to Ethernet PHY U62 Connections
FPGA
(U1) Pin
Net Name I/O Standard
DP83867ISRGZ U62
Pin Name
BG23 ENET_MDIO LVCMOS18 17 MDIO
BN27 ENET_MDC LVCMOS18 16 MDC
BF22 ENET_PDWN_B_I_INT_B_O LVCMOS18 44 INT_PWDN
BH22 ENET_SGMII_IN_N LVCMOS18 28 TX_D1_SGMII_SIP
BG22 ENET_SGMII_IN_P LVCMOS18 27 TX_D0_SGMII_SIN
BJ21 ENET_SGMII_OUT_N LVCMOS18 36 RX_D3_SGMII_SON
BH21 ENET_SGMII_OUT_P LVCMOS18 35 RX_D2_SGMII_SOP
BK22 ENET_SGMII_CLK_N LVCMOS18 34 RX_D1_SGMII_CON
BK23 ENET_SGMII_CLK_P LVCMOS18 33 RX_D0_SGMII_COP
U65.10 GEM3_ENET_RESET_B NA 43 RESET_B
BP27 ENET_COL_GPIO LVCMOS18 39 GPIO_2
BJ23 ENET_CLKOUT LVCMOS18 18 CLK_OUT
Chapter 3: Board Component Descriptions
UG1302 (v1.0) December 21, 2018 www.xilinx.com
VCU128 Board User Guide 71
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Xilinx VCU128 Specifications

General

Brand	Xilinx
Model	VCU128
Category	Motherboard
Language	English