rtd cpuModules CMA24BT, User Manual

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48 CMA24BT cpuModule BDM-610000087 Rev A
PCIe/104 Type 2 Bus (CN1 - Top and CN2 - Bottom)
Connectors CN1 and CN2 carry the signals of the PCIe/104 PCIe bus. These signals match definitions
found in the PCI/104-Express & PCIe/104 Specification Version 3.1 from the PC/104 Embedded
Consortium. Table 24 lists the pinouts of the PC/104-Express bus connector.
WARNING Not all PCIe cards are compatible with the PCIe/104 Type 2 connector. Be sure
that all of the boards attached to this bus are compatible before powering the system.
Table 24 PCIe/104 Type 2 Bus Signal Assignments (Top View) 1
Pin Signal Signal Pin
1 USB_OC#
+5
V
ol
ts
PE_RST# 2
3 +3.3V 2 +3.3V 2 4
5 USB_1p USB_0p 6
7 USB_1n USB_0n 8
9 GND GND 10
11 PEx1_1Tp (CN2 only) PEx1_0Tp (CN2 only) 12
13 PEx1_1Tn
(CN2 only)
PEx1_0Tn
(CN2 only)
14
15 GND GND 16
17 PEx1_2Tp
(CN2 only)
PEx1_3Tp
(CN2 only)
18
19 PEx1_2Tn (CN2 only) PEx1_3Tn (CN2 only) 20
21 GND GND 22
23 PEx1_1Rp (CN2 only) PEx1_0Rp (CN2 only) 24
25 PEx1_1Rn
(CN2 only)
PEx1_0Rn
(CN2 only)
26
27 GND GND 28
29 PEx1_2Rp
(CN2 only)
PEx1_3Rp
(CN2 only)
30
31 PEx1_2Rn (CN2 only) PEx1_3Rn (CN2 only) 32
33 GND GND 34
35 PEx1_1Clkp (CN2 only) PEx1_0Clkp (CN2 only) 36
37 PEx1_1Clkn
(CN2 only)
PEx1_0Clkn
(CN2 only)
38
39 +5V_STBY +5V_STBY 40
41 PEx1_2Clkp
(CN2 only)
PEx1_3Clkp
(CN2 only)
42
43 PEx1_2Clkn (CN2 only) PEx1_3Clkn (CN2 only) 44
45 CPU_DIR PWRGOOD 46
47 Reserved Reserved 48
49 Reserved Reserved 50
51 Reserved PSON# 52