
cExpress-TL User’s Guide PICMG COM.0 R3.0
Page 8 Copyright © 2021 ADLINK Technology, Inc.
4.3.11 SMBus ..................................................................................................................................................................................................................................................................................................................................38
4.3.12 I2C Bus.................................................................................................................................................................................................................................................................................................................................38
4.3.13 General Purpose I/O (GPIO).........................................................................................................................................................................................................................................................................................39
4.3.14 Serial Interface Signals...................................................................................................................................................................................................................................................................................................39
4.3.15 Power and System Management...............................................................................................................................................................................................................................................................................40
4.3.16 Power and Ground ..........................................................................................................................................................................................................................................................................................................41
4.4. CD Connector Signal Descriptions.........................................................................................................................................................................................................................................................................................42
4.4.1 USB 3.0 Extensions ..........................................................................................................................................................................................................................................................................................................42
4.4.2 PCI Express .........................................................................................................................................................................................................................................................................................................................43
4.4.3 DDI1 Port ............................................................................................................................................................................................................................................................................................................................44
4.4.4 DDI2 Port ............................................................................................................................................................................................................................................................................................................................47
4.4.5 DDI3 Port ............................................................................................................................................................................................................................................................................................................................50
4.4.6 PCIe Graphics Port (PEG)...............................................................................................................................................................................................................................................................................................53
4.4.7 Module Type Definition.................................................................................................................................................................................................................................................................................................54
4.4.8 Power and Ground ..........................................................................................................................................................................................................................................................................................................55
5. Additional Features.................................................................................................................................................................................................................................................................................................56
5.1. Debug Connector ........................................................................................................................................................................................................................................................................................................................57
5.2. Status LEDs.....................................................................................................................................................................................................................................................................................................................................58
5.3. Exception Codes...........................................................................................................................................................................................................................................................................................................................59
5.4. Fan Connector...............................................................................................................................................................................................................................................................................................................................60
5.5. BIOS Default Reset Button........................................................................................................................................................................................................................................................................................................61
5.6. BIOS Boot Select...........................................................................................................................................................................................................................................................................................................................62
6. BIOS Checkpoints, Beep Codes..........................................................................................................................................................................................................................................................................63
7. Software Support.....................................................................................................................................................................................................................................................................................................64
7.1. Windows 10 IOT Enterprise 64-bit.........................................................................................................................................................................................................................................................................................64
7.2. Yocto Linux 64-bit........................................................................................................................................................................................................................................................................................................................64
7.3. Ubuntu.............................................................................................................................................................................................................................................................................................................................................64
7.4. VxWorks 64-bit .............................................................................................................................................................................................................................................................................................................................64
8. Mechanical and Thermal.......................................................................................................................................................................................................................................................................................65
8.1. Module Dimensions....................................................................................................................................................................................................................................................................................................................65
8.2. Thermal Solutions........................................................................................................................................................................................................................................................................................................................66
8.2.1 Heatspreader: HTS...........................................................................................................................................................................................................................................................................................................66
8.2.2 Heatsink: THS ....................................................................................................................................................................................................................................................................................................................67
8.2.3 Heatsink High Profile: THSH ........................................................................................................................................................................................................................................................................................68
8.2.4 Heatsink with Fan: THSF................................................................................................................................................................................................................................................................................................69