User's Manual l MBa7x UM 0101 l © 2020, TQ-Systems GmbH
Page 47
4.2.12
PCIe clock generator
The i.MX7 internal clock is not PCIe compliant. For this reason, a PCIe compliant clock can be generated on the MBa7x with a
9FGV0241AKILF clock generator as an assembly option. Figure 36, Figure 37 and Figure 38 show possible clock supplies.
Detailed information can be found in the MBa7x schematics.
TQMa7x
Mini PCIe
(X17)
External
PCIe ref.
clock
PCIE REFCLK OUT
PCIE REFCLK IN
Pinheader
(X24)
Figure 36: Clock supply PCIe assembly option 1 (default)
TQMa7x
Mini PCIe
(X17)
External
PCIe ref.
clock
PCIE REFCLK OUT
PCIE REFCLK IN
Pinheader
(X24)
Figure 37: Clock supply PCIe assembly option 2
TQMa7x
Mini PCIe
(X17)
External
PCIe ref.
clock
PCIE REFCLK IN
Pinheader
(X24)
PCIE REFCLK
Figure 38: Clock supply PCIe assembly option 3
