
Publication No. CPCI3UX606-HRM/1 CPCI3UX606 7
1.4 Pin Assignments
1.4.1 P1 (Ethernet Gigabit Signals)
If a build option that does not provide Gigabit Ethernet on either channel 0 or 1 is selected, then
these pins carry the GPIO signals shown. In this case, no links should be fitted across P1 to prevent
damage to or unexpected operation on any Gigabit Ethernet interface connected to J3 or J4.
AssumingthebuildoptionprovidesGigabitEthernet,forGigabitEthernet
operationonchannel0(atJ3),fitlinksacrossthepinsshownbelow:
ForGigabitEthernetoperationonchannel1(atJ4),fitlinksacrossthepinsshown
below:
ETH1_3‐andETH1_3+areselectedusingP9andP10.
1.4.2 P2 (COM1/COM2)
COM1is2‐wireRS232DTEasaminimum(noRTS/CTS);4‐wireoperation
dependsonavailabilityoftherequiredsignals,whichisanIMP3Abuildoption
(alsoseeP9andP10).RS232/RS422configurationofCOM1issoftwarecontrolled;
RS422optionsignalsaregiveninparentheses.
COM2is4‐wirepermanently.RS232/RS422configurationofCOM2issoftware
controlled;RS422optionsignalsaregiveninparentheses.
Table 1-4 P1 Pin Assignments for Gigabit Ethernet on Channel 0
Pins Linked Signal GPIO Signal
12 and 11 ETH0_2+ GPIO4
10 and 9 ETH0_2- GPIO5
8 and 7 ETH0_3+ GPIO7
6 and 5 ETH0_3- GPIO8
Table 1-5 P1 Pin Assignments for Gigabit Ethernet on Channel 1
Pins Linked Signal GPIO Signal
4 and 3 ETH1_2+ GPIO6
2 and 1 ETH1_2- GPIO9
Table 1-6 P2 Pin Assignments
Pin Signal Pin Signal
1COM1_LBa
a.Connected between pins 1, 2 and 3.
2COM1_LBa
3COM1_LBa4 No connection
5 COM1_TXD (TXD_A) 6 COM1_RXD (RXD_A)
7 COM1_CTS (RXD_B) 8 COM1_RTS (TXD_B)
9 No connection 10 No connection
11 No connection 12 COM2_LBb
13 COM2_TXD (TXD_A) 14 COM2_LBb
15 COM2_LBb
b.Connected between pins 12, 14 and 15.
16 COM2_RXD (RXD_A)
17 COM2_RTS (TXD_B) 18 COM2_CTS (RXD_B)
19 GND 20 GND