Table 26: XCVU37P U1 to QSFP28 Module Control and I2C Connections (cont'd)
FPGA (U1) Pin
Schematic Net
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
section.
For additional information about the quad small form factor pluggable (28 Gb/s QSFP28) module,
see the SFF-8663 and SFF-8679 specifications for the 28 Gb/s QSFP+ on the
website.
10/100/1000 Mb/s Tri-speed Ethernet PHY
, callout 22]
The VCU128 evaluation board uses the TI PHY device DP83867ISRGZ (U62) for Ethernet
communications at 10 Mb/s, 100 Mb/s, or 1000 Mb/s. The board supports SGMII mode only.
The PHY connection to a user-provided Ethernet cable is through RJ-45 connector P2, a Wurth
7499111221A with built-in magnetics and status LEDs. On power-up, or on reset, the PHY is
configured to operate in SGMII mode with PHY address[4:0] =
00011
. The following table lists
the FPGA U1 to U62 DP83867ISRGZ Ethernet PHY connections. This table also shows the net
names for the connections 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 (v1.1) April 21, 2021
VCU128 Board User Guide
71