ADLINK LEC-BASE R1 - Manual (Page 15)

Interface Signals 9
LEC-BASE
2 Interface Signals
This section provides the pin signals for all the non-standard user interfaces on the LEC-BASE.
Signal definitions for standard interfaces such as SATA, USB, PCIe, and DB9 serial connectors
can be found in their respective specification data sheets.
NOTE: The tables in this section define pin sequence using the method in the following exam-
ple: A 10-pin header with two rows of pins, using odd/even numbering, where pin 2 is directly
across from pin 1, is noted as 10 pins, 2 rows, odd/even pin sequence (1, 2).
2.1.1 SD/eMMC (AFB2) Interface
Table 2-4 lists the pin signals of the SD Card ground plane socket, which provides 60-pins, 2
rows, odd/even pin sequence (1, 2) with 0.02" (0.50mm) pitch. These signals are connected to
the SD/eMMC interface at pins S26 through S36 of the SMARC connector over a 3.3 volt level
shifter.
Table 2-4: SD/eMMC (AFB2) Interface Pin Signals
Pin # Signal
1 GND
2 GND
3 MMC2_D0_3V
4 GND
5 GND
6 GND
7 GND
8 GND
9 MMC2_D1_3V
10 GND
11 GND
12 GND
13 GND
14 GND
15 MMC2_D2_3V
16 GND
17 GND
18 GND
19 GND
20 GND
21 MMC2_D3_3V
22 VDD_3V3
23 GND
24 GND
25 GND
26 GND
27 MMC2_D4_3V
28 VDD_3V3
29 GND
30 GND
31 GND
32 GND
33 MMC2_D5_3V
34 GND
35 GND