Motorola ATCA-717 - Manual (Page 65)

On−Board Connectors Controls, Indicators, and Connectors
PENT/ATCA−717 65
Figure 12: Location of PMC Connectors Pn1 to Pn4
The connectors Pn1 to Pn3 implement the PMC pinouts as specified by the IEEE P1386.1
standard. Therefore they are not documented in this guide. The connector Pn4 contains
PMC I/O signals and is described in the following.
a
Pn4 carries the following types of signals:
S Power signals (GND)
S Clock signals (CLK_*, NETREF))
S Signals routed to on−board Ethernet switch (ETH*_)
S Signals routed to RTM (PMC_IO_*)
Part of the signals that are routed to the on−board switch and RTM (with the exception of
PMC_IO_25, 26, 28, 29, 30 and 31) are grouped into length−matched differential pairs of
100
Ω impedance. a