Verdin Carrier Board Design Guide
Preliminary
– Subject to Change
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2.2.3
Unused PCIe Signals Termination
Verdin
Pin
Verdin
Signal Name
Recommended Termination
228
PCIE_1_CLK_P
Leave NC if not used
226
PCIE_1_CLK_N
Leave NC if not used
234
PCIE_1_L0_RX_P
Preferable connect to GND if not used or leave NC
232
PCIE_1_L0_RX_N
Preferable connect to GND if not used or leave NC
240
PCIE_1_L0_TX_P
Leave NC if not used
238
PCIE_1_L0_TX_N
Leave NC if not used
252
CTRL_WAKE1_MICO#
Add pull-up resistor or disable the wake function in software
244
PCIE_1_RESET#
Leave NC if not used
12
I2C_1_SDA
Add pull-up resistor or disable the I
2
C function in software
14
I2C_1_SCL
Add pull-up resistor or disable the I
2
C function in software
Table 5: Unused PCIe Signals Termination
2.3
Ethernet
The Verdin module standard features up to two Ethernet interfaces. There is a media dependent
Gigabit Ethernet port on the "Always Compatible" interfaces which has the Ethernet PHY on the
module. A second Ethernet interface is available as Reduced Gigabit Media-Independent Interface
(RGMII) as "Reserved" interface. The RGMII requires a PHY to be placed on the carrier board and
allows using multiple types of media for the physical link layer.
2.3.1
Media Dependent Ethernet Port
The Verdin features one media dependent Gigabit Ethernet (1000Base-T) interface port (MDI). The
interface is backward compatible with the 10/100Mbit Ethernet (10BASE-T and 100BASE-TX)
standard. The Ethernet PHY is located on the module. Therefore, only the magnetics are required
on the carrier board. The interface operates in the “voltage” mode. This means, there is no center
tap voltage required.
2.3.1.1
Media Dependent Ethernet Signals
Verdin
Pin
Verdin
Signal Name
I/O
Type
Power
Rail
Description
225
ETH_1_MDI0_P
I/O
Analog
1000Base-T: DA+
10/100Base-TX: Tr
227
ETH_1_MDI0_N
I/O
Analog
1000Base-T: DA-
10/100Base -TX: Transmit -
233
ETH_1_MDI1_P
I/O
Analog
1000Base-T: DB+
10/100Base -TX: R
231
ETH_1_MDI1_N
I/O
Analog
1000Base-T: DB-
10/100Base -TX: Receive -
239
ETH_1_MDI2_P
I/O
Analog
1000Base-T: DC+
10/100Base -TX: Unused
241
ETH_1_MDI2_N
I/O
Analog
1000Base-T: DC-
10/100Base -TX: Unused
247
ETH_1_MDI3_P
I/O
Analog
1000Base-T: DD+
10/100Base -TX: Unused
245
ETH_1_MDI3_N
I/O
Analog
1000Base-T: DD-
10/100Base -TX: Unused
237
ETH_1_ACT
O
OD
3.3V
tolerant
LED indication output for activity on the Ethernet port
235
ETH_1_LINK
O
OD
3.3V
tolerant
LED indication output for established Ethernet link
Table 6: Ethernet signals