Hello guys,
I have a project for my university and I want to modify a mini PCIE to M.2 Adapter with FPC. The point is that I want to know the signals that the cable has. Does anyone know something about it? Thank you!
What does FPC stand for?
To look at what is happening on a cable in general, Oscilloscope (of the storage or mixed-domain type), logic analyzer or signal analyzer.
Your going to have to give more information or a picture
acronyms are alphabet soup nowadays.
Flexible Printed Circuit is the standard definition
Edit:
Ahh sorry mobile glitches
So all FPC is referring to is that its a printed circuit within an FFC (Flat Flexible cable). As to the signals in there. you will need the tools maze frame mentioned to decipher what is going where. There is going to be a chipset on this… the gist of it is FPCs are flexible and foldable printed circuits that consist of a layer or multiple layers of copper traces with a polyester base layer. FPCs WILL also have electronic components mounted to its traces and or have them overlapping traces.
In reference to pinouts (should it help you)
MiniPCIE:
Top side (ODD) || Bottom side (EVEN)
1 WAKE# 2 3.3V
3 Reserved**** 4 GND
5 Reserved**** 6
1.5V
7 CLKREQ# 8 VCC**
9 GND 10 I/O**
11 REFCLK- 12 CLK**
13 REFCLK+ 14 RST**
15 N/C or GND 16 VPP**
Mechanical key
17 Reserved 18 GND
19 Reserved 20 Reserved***
21 GND 22 PERST#
23 PERn0 24 +3.3Vaux
25 PERp0 26 GND
27 GND 28 +1.5V
29 GND 30 SMB_CLK
31 PETn0 32 SMB_DATA
33 PETp0 34 GND
35 GND 36 USB_D-
37 Reserved* 38 USB_D+
39 Reserved* 40 GND
41 Reserved* 42 LED_WWAN#
43 Reserved* 44 LED_WLAN#
45 Reserved* 46 LED_WPAN#
47 Reserved* 48 +1.5V
49 Reserved* 50 GND
51 Reserved* 52 +3.3V
NVME M type Key (Supports PCIE x4 (non NGFF))
Pin
Number Pin
Name Description
1 CONFIG_3 Defines module type
2 3.3 V Supply pin, 3.3 V
3 GND Ground
4 3.3 V Supply pin, 3.3 V
5 PERn3 PCIe Lane 3 Rx
6 N/A
7 PERp3 PCIe Lane 3 Rx
8 N/A
9 GND Ground
10 DAS/DSS Device Activity Signal / Disable Staggered Spinup
11 PETn3 PCIe Lane 3 Tx
12 3.3 V Supply pin, 3.3 V
13 PETp3 PCIe Lane 3 Tx
14 3.3 V Supply pin, 3.3 V
15 GND Ground
16 3.3V Supply pin, 3.3 V
17 PERn2 PCIe Lane 2 Rx
18 3.3 V Supply pin, 3.3 V
19 PERp2 PCIe Lane 2 Rx
20 N/A
21 CONFIG_0 Defines module type
22 N/A
23 PETn2 PCIe Lane 2 Tx
24 N/A
25 PETp2 PCIe Lane 2 Tx
26 N/A
27 GND Ground
28 N/A
29 PERn1 PCIe Lane 1 Rx
30 N/A
31 PERp1 PCIe Lane 1 Rx
32 N/A
33 GND Ground
34 N/A
35 PETn1 PCIe Lane 1 Tx
36 N/A
37 PETp1 PCIe Lane 1 Tx
38 DEVSLP Device Sleep, input. If driven high the host is informing the
SSD to enter a low power state.
39 GND Ground
40 N/A
41 SATA-B+/PERn0 Host receiver differential signal pair. If in PCIe mode PCIe Lane 0 Rx
42 N/A
43 SATA-B-/PERp0 Host receiver differential signal pair. If in PCIe mode PCIe Lane 0 Rx
44 N/A
45 GND Ground
46 N/A
47 SATA-A-/PETn0 Host transmitter differential signal pair. If in PCIe mode PCIe Lane 0 Tx
48 N/A
49 SATA-A+/PETp0 Host transmitter differential signal pair. If in PCIe mode PCIe Lane 0 Tx
50 PERST# PCIe reset
51 GND Ground
52 CLKREQ# Reference clock request signal
53 REFCLKN PCIe Reference Clock signals (100 MHz)
54 PEWAKE# PCIe WAKE# Open Drain with pull up on platform. Active Low.
55 REFCLKP PCIe Reference Clock signals (100 MHz)
56 MFG1 Manufacturing pin. Use determined by vendor.
57 GND Ground
58 MFG2 Manufacturing pin. Use determined by vendor.
59-66 removed Mechanical notch M
67 N/A
68 SUSCLK 32.768 kHz clock supply input provided by the Platform chipset
69 CONFIG_1 Defines module type
70 3.3 V Supply pin, 3.3 V
71 GND Ground
72 3.3 V Supply pin, 3.3 V
73 GND Ground
74 3.3 V Supply pin, 3.3 V
75 CONFIG_2 Defines module type
Naturally in order to convert these its not 1 to 1 you need a chipset or tiny asic…
Thats all the information I can give without knowing more about what you want to know.
1 Like
I thought mini-pciE and M.2 pciE were the same, but with a different physical connector?
When I check on Ebay and Aliexpress, I see adapters that exist to convert mini pciE to M.2 (for use with, for example, M.2 wireless cards), which don’t have any IC’s on the PCB.
1 Like
They’d have to have something to convert the 1.5v and the 3.3v at the very least
2 Likes
I’ve got a module similar to one of these, and all it has is a couple decoupling caps, so I’m not sure how they’re accomplishing it. They may be excluding circuit pins, idk. Completely passive.
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