Pin Configuration

Pinout table

The M.2 M-key Stack FMC has a high pin count FPGA Mezzanine Card (FMC) connector, providing the connections to the FPGA on the development board. The following table defines the pinout of the FMC connector and describes each pin’s purpose on this mezzanine card.

To avoid confusion, we have chosen not to label the PCIe lanes as being TX or RX; instead we have labelled them with the direction in which the signal flows (eg. FPGA-to-SSD1 means that the FPGA transmits this signal and the SSD1 receives).

The last column of the table identifies all of the pins that are routed through to the Carrier-side FMC connector for use by the second mezzanine card. A cross (x) mark in this column indicates that the second mezzanine card can consider this pin floating (not connected).

Pin	Pin name	Net	Description	Passed through
A1	GND	GND	Ground	✅
A2	DP1_M2C_P	SSDA2FPGA_1_P	PCIe lane 1 positive (SSD1-to-FPGA)	❌
A3	DP1_M2C_N	SSDA2FPGA_1_N	PCIe lane 1 negative (SSD1-to-FPGA)	❌
A4	GND	GND	Ground	✅
A5	GND	GND	Ground	✅
A6	DP2_M2C_P	SSDA2FPGA_2_P	PCIe lane 2 positive (SSD1-to-FPGA)	❌
A7	DP2_M2C_N	SSDA2FPGA_2_N	PCIe lane 2 negative (SSD1-to-FPGA)	❌
A8	GND	GND	Ground	✅
A9	GND	GND	Ground	✅
A10	DP3_M2C_P	SSDA2FPGA_3_P	PCIe lane 3 positive (SSD1-to-FPGA)	❌
A11	DP3_M2C_N	SSDA2FPGA_3_N	PCIe lane 3 negative (SSD1-to-FPGA)	❌
A12	GND	GND	Ground	✅
A13	GND	GND	Ground	✅
A14	DP4_M2C_P	SSDB2FPGA_0_P	PCIe lane 0 positive (SSD2-to-FPGA)	❌
A15	DP4_M2C_N	SSDB2FPGA_0_N	PCIe lane 0 negative (SSD2-to-FPGA)	❌
A16	GND	GND	Ground	✅
A17	GND	GND	Ground	✅
A18	DP5_M2C_P	SSDB2FPGA_1_P	PCIe lane 1 positive (SSD2-to-FPGA)	❌
A19	DP5_M2C_N	SSDB2FPGA_1_N	PCIe lane 1 negative (SSD2-to-FPGA)	❌
A20	GND	GND	Ground	✅
A21	GND	GND	Ground	✅
A22	DP1_C2M_P	FPGA2SSDA_1_P	PCIe lane 1 positive (FPGA-to-SSD1)	❌
A23	DP1_C2M_N	FPGA2SSDA_1_N	PCIe lane 1 negative (FPGA-to-SSD1)	❌
A24	GND	GND	Ground	✅
A25	GND	GND	Ground	✅
A26	DP2_C2M_P	FPGA2SSDA_2_P	PCIe lane 2 positive (FPGA-to-SSD1)	❌
A27	DP2_C2M_N	FPGA2SSDA_2_N	PCIe lane 2 negative (FPGA-to-SSD1)	❌
A28	GND	GND	Ground	✅
A29	GND	GND	Ground	✅
A30	DP3_C2M_P	FPGA2SSDA_3_P	PCIe lane 3 positive (FPGA-to-SSD1)	❌
A31	DP3_C2M_N	FPGA2SSDA_3_N	PCIe lane 3 negative (FPGA-to-SSD1)	❌
A32	GND	GND	Ground	✅
A33	GND	GND	Ground	✅
A34	DP4_C2M_P	FPGA2SSDB_0_P	PCIe lane 0 positive (FPGA-to-SSD2)	❌
A35	DP4_C2M_N	FPGA2SSDB_0_N	PCIe lane 0 negative (FPGA-to-SSD2)	❌
A36	GND	GND	Ground	✅
A37	GND	GND	Ground	✅
A38	DP5_C2M_P	FPGA2SSDB_1_P	PCIe lane 1 positive (FPGA-to-SSD2)	❌
A39	DP5_C2M_N	FPGA2SSDB_1_N	PCIe lane 1 negative (FPGA-to-SSD2)	❌
A40	GND	GND	Ground	✅
B1	CLK_DIR	N/C	Passed through	✅
B2	GND	GND	Ground	✅
B3	GND	GND	Ground	✅
B4	DP9_M2C_P	N/C	Not connected	❌
B5	DP9_M2C_N	N/C	Not connected	❌
B6	GND	GND	Ground	✅
B7	GND	GND	Ground	✅
B8	DP8_M2C_P	N/C	Not connected	❌
B9	DP8_M2C_N	N/C	Not connected	❌
B10	GND	GND	Ground	✅
B11	GND	GND	Ground	✅
B12	DP7_M2C_P	SSDB2FPGA_3_P	PCIe lane 3 positive (SSD2-to-FPGA)	❌
B13	DP7_M2C_N	SSDB2FPGA_3_N	PCIe lane 3 negative (SSD2-to-FPGA)	❌
B14	GND	GND	Ground	✅
B15	GND	GND	Ground	✅
B16	DP6_M2C_P	SSDB2FPGA_2_P	PCIe lane 2 positive (SSD2-to-FPGA)	❌
B17	DP6_M2C_N	SSDB2FPGA_2_N	PCIe lane 2 negative (SSD2-to-FPGA)	❌
B18	GND	GND	Ground	✅
B19	GND	GND	Ground	✅
B20	GBTCLK1_M2C_P	REFCLKB_FPGA_P	100MHz PCIe reference clock for the FPGA	❌
B21	GBTCLK1_M2C_N	REFCLKB_FPGA_N	100MHz PCIe reference clock for the FPGA	❌
B22	GND	GND	Ground	✅
B23	GND	GND	Ground	✅
B24	DP9_C2M_P	N/C	Not connected	❌
B25	DP9_C2M_N	N/C	Not connected	❌
B26	GND	GND	Ground	✅
B27	GND	GND	Ground	✅
B28	DP8_C2M_P	N/C	Not connected	❌
B29	DP8_C2M_N	N/C	Not connected	❌
B30	GND	GND	Ground	✅
B31	GND	GND	Ground	✅
B32	DP7_C2M_P	FPGA2SSDB_3_P	PCIe lane 3 positive (FPGA-to-SSD2)	❌
B33	DP7_C2M_N	FPGA2SSDB_3_N	PCIe lane 3 negative (FPGA-to-SSD2)	❌
B34	GND	GND	Ground	✅
B35	GND	GND	Ground	✅
B36	DP6_C2M_P	FPGA2SSDB_2_P	PCIe lane 2 positive (FPGA-to-SSD2)	❌
B37	DP6_C2M_N	FPGA2SSDB_2_N	PCIe lane 2 negative (FPGA-to-SSD2)	❌
B38	GND	GND	Ground	✅
B39	GND	GND	Ground	✅
B40	RES0	N/C	Passed through	✅
C1	GND	GND	Ground	✅
C2	DP0_C2M_P	FPGA2SSDA_0_P	PCIe lane 0 positive (FPGA-to-SSD1)	❌
C3	DP0_C2M_N	FPGA2SSDA_0_N	PCIe lane 0 negative (FPGA-to-SSD1)	❌
C4	GND	GND	Ground	✅
C5	GND	GND	Ground	✅
C6	DP0_M2C_P	SSDA2FPGA_0_P	PCIe lane 0 positive (SSD1-to-FPGA)	❌
C7	DP0_M2C_N	SSDA2FPGA_0_N	PCIe lane 0 negative (SSD1-to-FPGA)	❌
C8	GND	GND	Ground	✅
C9	GND	GND	Ground	✅
C10	LA06_P	N/C	Passed through	✅
C11	LA06_N	N/C	Passed through	✅
C12	GND	GND	Ground	✅
C13	GND	GND	Ground	✅
C14	LA10_P	N/C	Passed through	✅
C15	LA10_N	N/C	Passed through	✅
C16	GND	GND	Ground	✅
C17	GND	GND	Ground	✅
C18	LA14_P	N/C	Passed through	✅
C19	LA14_N	N/C	Passed through	✅
C20	GND	GND	Ground	✅
C21	GND	GND	Ground	✅
C22	LA18_P_CC	N/C	Passed through	✅
C23	LA18_N_CC	N/C	Passed through	✅
C24	GND	GND	Ground	✅
C25	GND	GND	Ground	✅
C26	LA27_P	N/C	Passed through	✅
C27	LA27_N	N/C	Passed through	✅
C28	GND	GND	Ground	✅
C29	GND	GND	Ground	✅
C30	SCL	I2C_SCL	I2C Clock	✅
C31	SDA	I2C_SDA	I2C Data (bidirectional)	✅
C32	GND	GND	Ground	✅
C33	GND	GND	Ground	✅
C34	GA0	GA0	EEPROM Address Bit 1 (A1)	✅
C35	12P0V_1	12V0	12VDC	✅
C36	GND	GND	Ground	✅
C37	12P0V_2	12V0	12VDC	✅
C38	GND	GND	Ground	✅
C39	3P3V_1	3V3	Passed through	✅
C40	GND	GND	Ground	✅
D1	PG_C2M	PG	Power Good (Driven by carrier)	✅
D2	GND	GND	Ground	✅
D3	GND	GND	Ground	✅
D4	GBTCLK0_M2C_P	REFCLKA_FPGA_P	100MHz PCIe reference clock for the FPGA	❌
D5	GBTCLK0_M2C_N	REFCLKA_FPGA_P	100MHz PCIe reference clock for the FPGA	❌
D6	GND	GND	Ground	✅
D7	GND	GND	Ground	✅
D8	LA01_P_CC	N/C	Passed through	✅
D9	LA01_N_CC	N/C	Passed through	✅
D10	GND	GND	Ground	✅
D11	LA05_P	N/C	Passed through	✅
D12	LA05_N	N/C	Passed through	✅
D13	GND	GND	Ground	✅
D14	LA09_P	N/C	Passed through	✅
D15	LA09_N	N/C	Passed through	✅
D16	GND	GND	Ground	✅
D17	LA13_P	N/C	Passed through	✅
D18	LA13_N	N/C	Passed through	✅
D19	GND	GND	Ground	✅
D20	LA17_P_CC	N/C	Passed through	✅
D21	LA17_N_CC	N/C	Passed through	✅
D22	GND	GND	Ground	✅
D23	LA23_P	N/C	Passed through	✅
D24	LA23_N	N/C	Passed through	✅
D25	GND	GND	Ground	✅
D26	LA26_P	N/C	Passed through	✅
D27	LA26_N	N/C	Passed through	✅
D28	GND	GND	Ground	✅
D29	TCK	N/C	Passed through	✅
D30	TDI	TDI-TDO	Passed through	✅
D31	TDO	TDI-TDO	Passed through	✅
D32	3P3VAUX	3V3AUX	3.3VDC Power supply for EEPROM	✅
D33	TMS	N/C	Passed through	✅
D34	TRST_L	N/C	Passed through	✅
D35	GA1	GA1	EEPROM Address Bit 0 (A0)	✅
D36	3P3V_2	3V3	Passed through	✅
D37	GND	GND	Ground	✅
D38	3P3V_3	3V3	Passed through	✅
D39	GND	GND	Ground	✅
D40	3P3V_4	3V3	Passed through	✅
E1	GND	GND	Ground	✅
E2	HA01_P_CC	N/C	Passed through	✅
E3	HA01_N_CC	N/C	Passed through	✅
E4	GND	GND	Ground	✅
E5	GND	GND	Ground	✅
E6	HA05_P	N/C	Passed through	✅
E7	HA05_P	N/C	Passed through	✅
E8	GND	GND	Ground	✅
E9	HA09_P	N/C	Passed through	✅
E10	HA09_P	N/C	Passed through	✅
E11	GND	GND	Ground	✅
E12	HA13_P	N/C	Passed through	✅
E13	HA13_P	N/C	Passed through	✅
E14	GND	GND	Ground	✅
E15	HA16_P	N/C	Passed through	✅
E16	HA16_P	N/C	Passed through	✅
E17	GND	GND	Ground	✅
E18	HA20_P	N/C	Passed through	✅
E19	HA20_P	N/C	Passed through	✅
E20	GND	GND	Ground	✅
E21	HB03_P	N/C	Passed through	✅
E22	HB03_P	N/C	Passed through	✅
E23	GND	GND	Ground	✅
E24	HB05_P	N/C	Passed through	✅
E25	HB05_P	N/C	Passed through	✅
E26	GND	GND	Ground	✅
E27	HB09_P	N/C	Passed through	✅
E28	HB09_P	N/C	Passed through	✅
E29	GND	GND	Ground	✅
E30	HB13_P	N/C	Passed through	✅
E31	HB13_P	N/C	Passed through	✅
E32	GND	GND	Ground	✅
E33	HB19_P	N/C	Passed through	✅
E34	HB19_P	N/C	Passed through	✅
E35	GND	GND	Ground	✅
E36	HB21_P	N/C	Passed through	✅
E37	HB21_P	N/C	Passed through	✅
E38	GND	GND	Ground	✅
E39	VADJ_1	N/C	Passed through	✅
E40	GND	GND	Ground	✅
F1	PG_M2C	N/C	Passed through	✅
F2	GND	GND	Ground	✅
F3	GND	GND	Ground	✅
F4	HA00_P_CC	N/C	Passed through	✅
F5	HA00_P_CC	N/C	Passed through	✅
F6	GND	GND	Ground	✅
F7	HA04_P	N/C	Passed through	✅
F8	HA04_P	N/C	Passed through	✅
F9	GND	GND	Ground	✅
F10	HA08_P	N/C	Passed through	✅
F11	HA08_P	N/C	Passed through	✅
F12	GND	GND	Ground	✅
F13	HA12_P	N/C	Passed through	✅
F14	HA12_P	N/C	Passed through	✅
F15	GND	GND	Ground	✅
F16	HA15_P	N/C	Passed through	✅
F17	HA15_P	N/C	Passed through	✅
F18	GND	GND	Ground	✅
F19	HA19_P	N/C	Passed through	✅
F20	HA19_P	N/C	Passed through	✅
F21	GND	GND	Ground	✅
F22	HB02_P	N/C	Passed through	✅
F23	HB02_P	N/C	Passed through	✅
F24	GND	GND	Ground	✅
F25	HB04_P	N/C	Passed through	✅
F26	HB04_P	N/C	Passed through	✅
F27	GND	GND	Ground	✅
F28	HB08_P	N/C	Passed through	✅
F29	HB08_P	N/C	Passed through	✅
F30	GND	GND	Ground	✅
F31	HB12_P	N/C	Passed through	✅
F32	HB12_P	N/C	Passed through	✅
F33	GND	GND	Ground	✅
F34	HB16_P	N/C	Passed through	✅
F35	HB16_P	N/C	Passed through	✅
F36	GND	GND	Ground	✅
F37	HB20_P	N/C	Passed through	✅
F38	HB20_P	N/C	Passed through	✅
F39	GND	GND	Ground	✅
F40	VADJ_2	N/C	Passed through	✅
J1	GND	GND	Ground	✅
J2	CLK3_BIDIR_P	N/C	Passed through	✅
J3	CLK3_BIDIR_P	N/C	Passed through	✅
J4	GND	GND	Ground	✅
J5	GND	GND	Ground	✅
J6	HA03_P	N/C	Passed through	✅
J7	HA03_P	N/C	Passed through	✅
J8	GND	GND	Ground	✅
J9	HA07_P	N/C	Passed through	✅
J10	HA07_P	N/C	Passed through	✅
J11	GND	GND	Ground	✅
J12	HA11_P	N/C	Passed through	✅
J13	HA11_P	N/C	Passed through	✅
J14	GND	GND	Ground	✅
J15	HA14_P	N/C	Passed through	✅
J16	HA14_P	N/C	Passed through	✅
J17	GND	GND	Ground	✅
J18	HA18_P	N/C	Passed through	✅
J19	HA18_P	N/C	Passed through	✅
J20	GND	GND	Ground	✅
J21	HA22_P	N/C	Passed through	✅
J22	HA22_P	N/C	Passed through	✅
J23	GND	GND	Ground	✅
J24	HB01_P	N/C	Passed through	✅
J25	HB01_P	N/C	Passed through	✅
J26	GND	GND	Ground	✅
J27	HB07_P	N/C	Passed through	✅
J28	HB07_P	N/C	Passed through	✅
J29	GND	GND	Ground	✅
J30	HB11_P	N/C	Passed through	✅
J31	HB11_P	N/C	Passed through	✅
J32	GND	GND	Ground	✅
J33	HB15_P	N/C	Passed through	✅
J34	HB15_P	N/C	Passed through	✅
J35	GND	GND	Ground	✅
J36	HB18_P	N/C	Passed through	✅
J37	HB18_P	N/C	Passed through	✅
J38	GND	GND	Ground	✅
J39	VIO_B_M2C_1	N/C	Passed through	✅
J40	GND	GND	Ground	✅
K1	VREF_B_M2C	N/C	Passed through	✅
K2	GND	GND	Ground	✅
K3	GND	GND	Ground	✅
K4	CLK2_BIDIR_P	N/C	Passed through	✅
K5	CLK2_BIDIR_P	N/C	Passed through	✅
K6	GND	GND	Ground	✅
K7	HA02_P	N/C	Passed through	✅
K8	HA02_P	N/C	Passed through	✅
K9	GND	GND	Ground	✅
K10	HA06_P	N/C	Passed through	✅
K11	HA06_P	N/C	Passed through	✅
K12	GND	GND	Ground	✅
K13	HA10_P	N/C	Passed through	✅
K14	HA10_P	N/C	Passed through	✅
K15	GND	GND	Ground	✅
K16	HA17_P_CC	N/C	Passed through	✅
K17	HA17_P_CC	N/C	Passed through	✅
K18	GND	GND	Ground	✅
K19	HA21_P	N/C	Passed through	✅
K20	HA21_P	N/C	Passed through	✅
K21	GND	GND	Ground	✅
K22	HA23_P	N/C	Passed through	✅
K23	HA23_P	N/C	Passed through	✅
K24	GND	GND	Ground	✅
K25	HB00_P_CC	N/C	Passed through	✅
K26	HB00_P_CC	N/C	Passed through	✅
K27	GND	GND	Ground	✅
K28	HB06_P_CC	N/C	Passed through	✅
K29	HB06_P_CC	N/C	Passed through	✅
K30	GND	GND	Ground	✅
K31	HB10_P	N/C	Passed through	✅
K32	HB10_P	N/C	Passed through	✅
K33	GND	GND	Ground	✅
K34	HB14_P	N/C	Passed through	✅
K35	HB14_P	N/C	Passed through	✅
K36	GND	GND	Ground	✅
K37	HB17_P_CC	N/C	Passed through	✅
K38	HB17_P_CC	N/C	Passed through	✅
K39	GND	GND	Ground	✅
K40	VIO_B_M2C_2	N/C	Passed through	✅
G1	GND	GND	Ground	✅
G2	CLK1_M2C_P	N/C	Passed through	✅
G3	CLK1_M2C_N	N/C	Passed through	✅
G4	GND	GND	Ground	✅
G5	GND	GND	Ground	✅
G6	LA00_P_CC	N/C	Passed through	✅
G7	LA00_N_CC	N/C	Passed through	✅
G8	GND	GND	Ground	✅
G9	LA03_P	N/C	Passed through	✅
G10	LA03_N	N/C	Passed through	✅
G11	GND	GND	Ground	✅
G12	LA08_P	N/C	Passed through	✅
G13	LA08_N	N/C	Passed through	✅
G14	GND	GND	Ground	✅
G15	LA12_P	N/C	Passed through	✅
G16	LA12_N	N/C	Passed through	✅
G17	GND	GND	Ground	✅
G18	LA16_P	N/C	Passed through	✅
G19	LA16_N	N/C	Passed through	✅
G20	GND	GND	Ground	✅
G21	LA20_P	N/C	Passed through	✅
G22	LA20_N	N/C	Passed through	✅
G23	GND	GND	Ground	✅
G24	LA22_P	N/C	Passed through	✅
G25	LA22_N	N/C	Passed through	✅
G26	GND	GND	Ground	✅
G27	LA25_P	N/C	Passed through	✅
G28	LA25_N	N/C	Passed through	✅
G29	GND	GND	Ground	✅
G30	LA29_P	N/C	Passed through	✅
G31	LA29_N	N/C	Passed through	✅
G32	GND	GND	Ground	✅
G33	LA31_P	N/C	Passed through	✅
G34	LA31_N	N/C	Passed through	✅
G35	GND	GND	Ground	✅
G36	LA33_P	N/C	Passed through	✅
G37	LA33_N	N/C	Passed through	✅
G38	GND	GND	Ground	✅
G39	VADJ_3	VADJ	Passed through	✅
G40	GND	GND	Ground	✅
H1	VREF_A_M2C	N/C	Passed through	✅
H2	PRSNT_M2C_L	GND	Ground	✅
H3	GND	GND	Ground	✅
H4	CLK0_M2C_P	N/C	Passed through	✅
H5	CLK0_M2C_N	N/C	Passed through	✅
H6	GND	GND	Ground	✅
H7	LA02_P	N/C	Passed through	✅
H8	LA02_N	N/C	Passed through	✅
H9	GND	GND	Ground	✅
H10	LA04_P	PERST_B	Passed through	✅
H11	LA04_N	PEDET_B	Passed through	✅
H12	GND	GND	Ground	✅
H13	LA07_P	N/C	Passed through	✅
H14	LA07_N	N/C	Passed through	✅
H15	GND	GND	Ground	✅
H16	LA11_P	N/C	Passed through	✅
H17	LA11_N	N/C	Passed through	✅
H18	GND	GND	Ground	✅
H19	LA15_P	N/C	Passed through	✅
H20	LA15_N	N/C	Passed through	✅
H21	GND	GND	Ground	✅
H22	LA19_P	N/C	Passed through	✅
H23	LA19_N	N/C	Passed through	✅
H24	GND	GND	Ground	✅
H25	LA21_P	N/C	Passed through	✅
H26	LA21_N	N/C	Passed through	✅
H27	GND	GND	Ground	✅
H28	LA24_P	N/C	Passed through	✅
H29	LA24_N	N/C	Passed through	✅
H30	GND	GND	Ground	✅
H31	LA28_P	N/C	Passed through	✅
H32	LA28_N	N/C	Passed through	✅
H33	GND	GND	Ground	✅
H34	LA30_P	N/C	Passed through	✅
H35	LA30_N	N/C	Passed through	✅
H36	GND	GND	Ground	✅
H37	LA32_P	N/C	Passed through	✅
H38	LA32_N	N/C	Passed through	✅
H39	GND	GND	Ground	✅
H40	VADJ_4	VADJ	Passed through	✅

M.2 M-key Stack FMC (OP073)

Opsero Docs

Title here

Pin Configuration

Pinout table

Pin Configuration

Pinout table#

Pinout table