Connect Tech FreeForm/PCI-104 User Manual
Revision 0.02 38

Hardware Description

Connector Pinouts
High-speed Serial (P4)
The sideband LVCMOS signals (HSS) have been rearranged so that when two FreeForm units are
connected:
HSS_USER_IO(0) maps to HSS_USER_IO(2)
HSS_USER_IO(1) maps to HSS_USER_IO(3)
Also, 3.3V pins replace the GND pins; this is because the connector has embedded GND blades.
Revision B Revision C
Pin Signal
1 MTGRXN0_112
3 MTGRXP0_112
2 MTGTXN0_112
4 MTGTXP0_112
5 GND
7 GND
6 HSS_USER_IO(0)
8 HSS_USER_IO(1)
9 MTGRXN1_112
11 MTGRXP1_112
10 MTGTXN1_112
12 MTGTXP1_112
13 GND
15 GND
14 GND
16 GND
17 MTGRXN0_114
19 MTGRXP0_114
18 MTGTXN0_114
20 MTGTXP0_114
21 GND
23 GND
22 HSS_USER_IO(2)
24 HSS_USER_IO(3)
25 MTGRXN1_114
27 MTGRXP1_114
26 MTGTXN1_114
28 MTGTXP1_114
Pin Signal
1 MTGRXN0_112
3 MTGRXP0_112
2 MTGTXN0_112
4 MTGTXP0_112
5 HSS_USER_IO(0)
7 HSS_USER_IO(1)
6 HSS_USER_IO(2)
8 HSS_USER_IO(3)
9 MTGRXN1_112
11 MTGRXP1_112
10 MTGTXN1_112
12 MTGTXP1_112
13 3.3V
15 3.3V
14 3.3V
16 3.3V
17 MTGRXN0_114
19 MTGRXP0_114
18 MTGTXN0_114
20 MTGTXP0_114
21 3.3V
23 3.3V
22 3.3V
24 3.3V
25 MTGRXN1_114
27 MTGRXP1_114
26 MTGTXN1_114
28 MTGTXP1_114
RS-485 Headers (P5)
The orientation of the connector has changed. The pinout remains the same.
Revision B Revision C
1
10
P5
485 Port 0
1

P5

10
485 Port 0