ZCU104 Board User Guide
46
UG1267 (v1.1) October 9, 2018
Chapter 3:
Board Component Descriptions
GEM3 Ethernet (MIO 64-77)
The PS-side Gigabit Ethernet MAC (GEM) implements a 10/100/1000 Mb/s Ethernet
interface (see
), which connects to a TI DP83867IRPAP Ethernet RGMII PHY U98
routed to an RJ45 Ethernet connector. The RGMII Ethernet PHY is boot strapped to PHY
address
5'b01100
(
0x0C
) and Auto Negotiation is set to
Enable
. The communication with
the device is described in the DP83867 RGMII PHY data sheet
10/100/1000 MHz Tri-Speed Ethernet PHY
[
, callout 9]
The ZCU104 board uses the TIDP83867IRPAP Ethernet RGMII PHY
(U98) for
Ethernet communications at 10 Mb/s, 100 Mb/s, or 1000 Mb/s. The board supports RGMII
mode only. The PHY connection to a user-provided Ethernet cable is through a Bel Fuse
L829-1J1T-43 RJ-45 connector (P12) with built-in magnetics and LED indicators. The
connections from XCZU7EV MPSoC U1 to the DP83867IRPAP PHY device U98 (bottom of the
board) are listed in
X-Ref Target - Figure 3-9
Figure 3-9:
Ethernet Block Diagram
Table 3-14:
DP83867 PHY Connections to XCZU7EV MPSoC
XCZU7EV
(U1) Pin
Net Name
DP83867 PHY U98
Pin #
Pin Name
J31
MIO64_ENET_TX_CLK 40
GTX_CLK
J32
MIO65_ENET_TX_D0 38
TX_DO
J34
MIO66_ENET_TX_D1 37
TX_D1
K28
MIO67_ENET_TX_D2 36
TX_D2
K29
MIO68_ENET_TX_D3 35
TX_D3
K30
MIO69_ENET_TX_CTRL 52
TX_EN_TX_CTRL
TI
DP83867IR
GEM
MIO
RGMII
MDIO
RJ45 and
Magnetics
X16527-100818