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.
I feel like @PhaseLockedLoop is the guy to talk to
Your going to have to give more information or a picture
acronyms are alphabet soup nowadays.
Flexible Printed Circuit is the standard definition
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)
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.
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.
They’d have to have something to convert the 1.5v and the 3.3v at the very least
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.