User Guide PC6-TANGO • CompactPCI ® PlusIO CPU Card Intel® Atom™ E3900 Series Processor (Apollo Lake-I SoC) Document No. 8565 • Edition 12 • 23 September 2021 PC6-TANGO • CompactPCI® PlusIO • Intel® Atom™ E39xx Processor (APL-I SoC) Contents About this Manual . 5 Edition History . 5 Related Documents . 6 Nomenclature . 7 Trade Marks . 7 Legal Disclaimer - Liability Exclusion . 7 Standards. 8 Overview............................................................. 9 Technical Features. 11 Feature Summary . 11 Power Requirements. 17 Block Diagram . 18 Top View Component Assembly . 19 Bottom View Component Assembly . 20 Front Panel Connectors. 21 Front Panel Switches & Indicators . 21 On-Board Connectors & Sockets . 22 Pin Headers . 22 Jumpers . 22 Microprocessor. 23 Thermal Considerations . 24 Main Memory . 25 Graphics Subsystem . 26 LAN Subsystem. 27 Serial ATA Interface (SATA). 28 PCI Express® Interface . 29 Universal Serial Bus (USB) . 30 Utility Interfaces . 31 Real-Time Clock . 32 SPI Flash. 33 CFast™. 34 e•MMC............................................................. 34 Micro SD Card . 34 Reset............................................................... 35 Watchdog . 37 Front Panel LEDs. 38 PG (Power Good) LED . 38 GP (General Purpose) LED . 39 HD (Hard Disk Activity) LED . 39 EB (Ethernet Backplane) LED . 40 © EKF -2- ekf.com PC6-TANGO • CompactPCI® PlusIO • Intel® Atom™ E39xx Processor (APL-I SoC) Hot Swap Detection . 41 Power Supply Status (PWR_FAIL#) . 41 Mezzanine Side Board Options . 42 CompactPCI® PlusIO . 45 Installing and Replacing Components . 48 Before You Begin . 48 Installing the Board . 49 Removing the Board. 50 EMC Recommendations . 51 Replacement of the Battery. 52 Technical Reference. 53 Local PCI Devices . 53 Local SMB/I2C Devices. 54 Board Control and Status Registers (BCSR) . 55 Write/Read Control Register 0 . 56 Read/Clear Status Register 0. 57 Read/Clear Status Register 1. 58 Read PLD Revision Register. 59 GPIO Usage . 60 GPIO Usage APL-I SoC . 60 J-GP UEFI/BIOS Defaults & IEEE 1588 Pulse per Second. 62 Manufacturer Mode Jumper (J-MFG) . 63 RTC Reset (J-RTC) . 64 Connectors. 65 Front Panel Connectors . 66 DisplayPort Connectors . 67 USB Connectors . 68 Ethernet Connectors RJ45 . 69 Option M12 X-Coded Ethernet Receptacles . 70 microSD Card Holder. 72 CFast™ Card Holder. ..