Telit Wireless Solutions FN990 Series Hardware Design Guide

FN990 Family Hardware Design Guide
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Page 41 of 83
2024-05-29
Figure 12: Connection for PCIe Interface
Note: FN990 Family supports PCIe root complex (RC) mode.
Depending on the EP device such as NIC or something else, may require a suitable
value of pull-up resistor on the PCIE_RESET_N line.
Customers interested in using PCIe RC mode can contact Telit Technical Support at:
•
TS-EMEA@telit.com
•
TS-AMERICAS@telit.com
•
TS-APAC@telit.com
Note: The PCIe signals traces must be routed carefully: minimize trace lengths,
number of vias, and capacitive loading. The impedance value should be as close as
possible to the 85 Ohm differential.
Table 31: PCIe Interface Signals
Pin
Signal
I/O
Function
Type
Comment
41
PCIE_TX0_M
O
PCIe transmit 0 – Minus
Analog
43
PCIE_TX0_P
O
PCIe transmit 0 – Plus
Analog
47
PCIE_RX0_M
I
PCIe receive 0 – Minus
Analog
49
PCIE_RX0_P
I
PCIe receive 0 – Plus
Analog
53
PCIE_REFCLK_M
I
PCIe differential reference clock –
Minus
Analog
55
PCIE_REFCLK_P
I
PCIe differential reference clock – Plus
Analog
50
PCIE_RESET_N
I
Functional reset to PCIe bus
VPH_PWR
Internal 10k
PU
52
PCIE_CLKREQ_N
O
PCIe reference clock request signal
VPH_PWR
Internal 10k
PU

Telit Wireless Solutions FN990 Series Specifications

General

Brand	Telit Wireless Solutions
Model	FN990 Series
Category	Computer Hardware
Language	English