NL-AB-BBBC

Skywire​®​ BeagleBone Black Cape Data Sheet NimbeLink Corp Updated: January 2018 PN 30122 rev 2 ​© NimbeLink Corp. 2016. All rights reserved. 1 Table of Contents Table of Contents 2 Introduction 3 Overview 3 Product Description 3 Orderable Parts 4 Additional Resources 4 Technical Specifications 5 Block Diagram 5 Pins used 5 2.3 BeagleBone Compatibility 6 2.4 Features and Specifications 7 2.4.1 Specifications 7 Mechanical Specifications 7 Electrical Specifications 7 Power Requirements 7 Antenna Specifications 8 2.4.2 Features 8 Skywire Cellular Modem 8 USB HUB 9 MUX 9 CAN 10 Enabling CAN0 10 Disabling CAN1 10 XBee® Socket 11 EEPROM 11 Connectors, switches, and Status LEDs PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 12 2 1. Introduction 1.1 Overview This document is the data sheet for the Skywire® BeagleBone Black Cape. Throughout the document Skywire BeagleBone Black Cape will often be referred to as 'the cape,' although it may be referred to by its full name. The NimbeLink Skywire modem is available with bundled data plans from leading cellular carriers. The Skywire cellular modem and antennas are sold separately. Make sure you check the NimbeLink's Skywire Beaglebone Black Cape product page for the most up to date information. 1.2 Product Description Connect the Beaglebone Black development platform to the Internet of Things (IoT) quickly and easily with NimbeLink's Skywire Beaglebone Black Cape. Whether you are a hobbyist or a developer preparing a product for launch, NimbeLink's cape and your choice of NimbeLink Skywire plug-in cellular modems will provide the cellular connectivity you need. Cellular connectivity is just one of the capabilities NimbeLink's Beaglebone Black Cape offers including: ● Built-in CAN transceivers for equipment and vehicle data connections ● Built-in socket for XBee® modules for wireless communications ● NimbeLink’s EVDO and LTE Skywire modems provide GPS with a high speed cellular connection ● Skywire’s Verizon ODI certification eliminates the long wait for certification ● Two additional USB-A receptacles add flexibility ● NimbeLink’s optional bundled, no-contract cellular plans are easy and affordable PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 3 1.3 Orderable Parts Table 1.1 Orderable Parts Number Description Manufacturer NL-AB-BBBC Skywire BeagleBone Black Cape NL-SW-1XRTT-V Skywire 1xRTT Cellular Modem without data plan. 2G Modem. TG.30.8113 Primary & Diversity Cellular Antenna NL-SW-EVDO-V MA.301.A.AB.001 Skywire EVDO Cellular Modem without Data plan. 3G Modem. 3G Primary Antenna, GPS/GLONASS Antenna for Skywire EVDO* Carrier Network Type NimbeLink NimbeLink Verizon CDMA 1xRTT Taoglas NimbeLink Verizon CDMA EVDO Taoglas *Antenna is a dual cellular & GPS antenna 1.4 Additional Resources ● NimbeLink's Skywire ​Beaglebone Black Cape Product Page ● NimbeLink’s Skywire ​Beaglebone Black Cape Device Tree Overlay ● NimbeLink's Skywire ​Beaglebone Black Cape Schematic ● NimbeLink's Skywire ​Beaglebone Black Cape Github ● NimbeLink's ​Skywire 2G 1xRTT Product Page ● NimbeLink's ​Skywire 3G CDMA/EVDO Product Page ● Telit’s ​CE910 Hardware User Guide ● Telit’s ​DE910 Hardware User Guide PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 4 2. Technical Specifications 2.1. Block Diagram PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 5 2.2. Pins used The cape uses up to 29 pins (I/O Pins, VCC, GND, and reset pins) in various configurations, although at any one time the cape will likely be using 4-10 I/O pins plus the 15 VCC, ground, and reset pins. Table 2.1: Skywire Beaglebone Black Cape Pin Usage PIN Name Header Pin Number CAN0 EN 8 7 SKY ON-OFF 8 8 CAN1 EN 8 9 SKY DTR 8 10 UART5 TX 8 37 UART5 RX 8 38 UART4 RX 9 11 UART4 TX 9 13 SCL2 9 19 SDA2 9 20 UART2 TX 9 21 UART2 RX 9 22 UART1 TX 9 24 UART1 RX 9 26 PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 6 2.3 BeagleBone Compatibility NimbeLink’s Skywire Beaglebone Black Cape was designed around the Beaglebone Black platform and has not been verified on the original Beaglebone. 2.4 Features and Specifications 2.4.1 Specifications 2.4.1.1 Mechanical Specifications Table 2.2: Skywire Beaglebone Black Cape Mechanical Specifications Mechanical Size Layers PCB Thickness RoHS Compliant 2.4.1.2 3.95" X 2.15" 4 .062" Yes Electrical Specifications Table 2.3: Skywire Beaglebone Black Cape Electrical Specifications Power I/O Voltage Max Current Usage 5V Max Current Usage 3.3V Beaglebone 5V Input Typical Current Usage in (No USB devices, Skywire active, Beaglebone powered) Pins used LED Indicators Connectors EEPROM Support PN 30149 rev 2 5V via P9 4V via U1 3.3V via P9 3.3V 1.6A 130 mA 25 mA 29 See Table 2.9 See Table 2.8 Yes ​NimbeLink Corp. All Rights Reserved. 7 2.4.1.3 Power Requirements The Skywire BeagleBone Black Cape requires 5V and 3.3V inputs from the BeagleBone Black header P9. The Skywire Cellular Modem will regularly consume high amounts of current (up to 750 mA) from the adapters power supply. Additionally the USB hub is capable of supplying up to 500mA per downstream port. It is recommended to have at least 2.5A of available source current available for the adapter board to provide power for the Skywire Cellular Modem and the USB hubs connected devices. 2.4.1.4 Antenna Specifications Onboard the Skywire are three U.Fl to PCB mound SMA cables that allow for the full feature set of the NimbeLink Skywire modems to be utilized. For cellular only communication it is recommended to use a Taoglas ​TG.30.8113​ antenna. If the user is using both cellular and GPS use a Taoglas ​MA.301.A.AB.001. 2.4.2 Features NimbeLink's Skywire Beaglebone Black Cape is designed to be an adaptable cellular gateway for the BeagleBone Black C. The cape enables diverse connectivity options by including a Skywire Cellular Modem socket for cellular/GPS connections, a USB hub with two USBA connections, two can transceivers, and an XBee® compatible socket. 2.4.1.5 Skywire Cellular Modem NimbeLink's Skywire cellular modems are the fastest way to provide cellular connectivity for machine-to-machine devices and speed them to market. The Pre-certified Skywire is the smallest plug-in cellular modem on the market, making it quicker and easier to deploy that chip down solutions, external modems, or solder-in modules. It uses a standard Skywire interface and it’s pre-certified to eliminate months of delays and tens of thousands of dollars in cost for required certifications. The capes Skywire socket allows for the Skywire cellular modem to communicate with the Beaglebone Black development kit over UART or USB connections. The Skywire’s standard interface allows for compatibility across all of the Skywire product line and interchangeability between 2G, 3G, and 4G cellular technologies. Table 2.4: Skywire Cellular Modem Operating Parameters Default Skywire UART Baud Rate Skywire I/O Voltage range Skywire Power Consumption 115200 bps Active Call(max) 1.65V-5.5V 750 mA Normal 29 mA Power Saving 1.1 mA Skywire Input Voltage 4.0 V Communication options UART, USB PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 8 Temperature Range -40 to 85C Dimensions 47mm x 82mm x 25mm 2.4.1.6 USB HUB Onboard the Skywire Beaglebone Black cape is a Microchip USB2514 four port USB 2.0 hub supporting LS/FS/HS USB connections. The USB hub is used to provide additional USB ports for the Beaglebone Black while allowing for direct communication between the Beaglebone Black and the Skywire Cellular modem. Connect the capes upstream USB hub port, J3 (Mini-B USB connector), to the Beaglebone’s USB-A downstream port to connect the Beaglebone to the capes USB hub. Figure 2-2 Cape to Beaglebone USB Connection Each downstream port on the capes USB hub is capable of supplying up to 500 mA of current to the downstream port. 2.4.1.7 MUX The cape has two MUX's to allow for multiple operating modes and a large range of cape compatibility. The connection configuration truth tables are shown in tables 2.4 and 2.5. Table 2.5: UART MUX (U7) Channel Connection Truth Table J8 Jumper IO Level MUX MUX OE# S1 S0 PN 30149 rev 2 Skywire UART Connection ​NimbeLink Corp. All Rights Reserved. 9 L L L UART4 (Default Connection) L L H UART2 L H L UART1 L H H UART5 Table 2.6: CAN MUX (U10) Channel Connection Truth Table J8 Jumper IO Level Data Connection S0 L I2C2 (Default Connection) H CAN0 2.4.1.8 CAN The cape has dual CAN bus capabilities. CAN0 and CAN1 both have a TI SN65HVD234D 3.3V CAN transceiver connected. Before connecting to the capes can system make sure the CAN transceivers can support your CAN bus system. Both of the CAN transceiver output lines are connected to J7 (as shown below). J7 is a 2x3 .1" pitch non populated header that the user can solder leads on to connect to the CAN bus. Enabling CAN0 CAN0 is connected to its transceiver (U8) through MUX (U10) to prevent CAN0 and I2C2 from interfering with each other. To enable data transmission to the CAN0 transceiver a jumper must be placed between J8-4 and J8-10. This will cause the MUX (U10) to route the connection to the CAN0 transceiver. U8 has an option to enable or disable the transceiver by toggling pin 5. By default this pin is always enabled. To control the enable signal via GPIO a 0 ohm 0603 resistor should be soldered R46. To enable CAN0 in the Device Tree please see the tutorial provided by Embedded Things ​here​. PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 10 Disabling CAN1 CAN1 is enabled by default in the device tree overlay. CAN1 is connected to its transceiver (U9) through a buffer (U11) to prevent CAN1 from interfering with UART1 when the I/O is in UART mode. By default data transmission is enabled to CAN1s transceiver. To disable data transmissions to the CAN1 transceiver place a jumper between J8-3 and J8-9 to enable the buffer. The can transceiver U9 has an option to enable or disable the transceiver by toggling pin 5. By default this pin is always enabled. To control the enable signal via GPIO a 0 ohm 0603 resistor should be soldered R28. 2.4.1.9 XBee® Socket On board the cape is an XBee® compatible socket (J14) for XBee® form factor devices. The Socket connects to UART2, 3.3V, and Ground as shown below. The socket is designed to accommodate XBee® form factor devices up to 1.3" long by 0.95" wide. 2.4.1.10 EEPROM The cape has its own EEPROM containing the boards EEPROM information per the Beaglebone EEPROM Data Format Revision A1. By default the EEPROM has write protection enabled to protect the EEPROM from data corruption. PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 11 The address of the EEPROM is set via jumpers J8-1/J8-7 and J8-2/J8-8 on the J8 header as shown below. Table 2.7: EEPROM Address Configuration Address A2 A1 A0 0x54 High Low Low 0x55 High Low High 0x56 High High Low 0x57 (Default Address) High High High 2.4.1.11 Connector Name Ant1 Ant2 Ant3 PN 30149 rev 2 Connectors, switches, and Status LEDs Table 2.8: Connectors and Switches Description PCB Mount SMA to U.Fl cable for Skywire GPS antenna PCB Mount SMA to U.Fl cable for Skywire diversity antenna PCB Mount SMA to U.Fl cable for Skywire primary antenna ​NimbeLink Corp. All Rights Reserved. 12 J1 J2 J3 J4 J5 J6 J7 J8 J14 P8 P9 SW1 4V current sensing port Downstream USB-A receptacle Upstream Mini-B USB receptacle Downstream USB-A receptacle Downstream 4 pin USB breakout header Skywire Cellular Modem Skywire socket CANBUS header Operating mode selection pins XBee® socket for 3.3V XBee® devices Beaglebone P8 Header Beaglebone P9 Header Reset Switch Onboard the cape is nine status LEDs as shown in table 2.8 . LED D2 D3 D4 D6 D8 D10 D13 D14 D16 Table 2.9: Status LEDs Function 5V Power Indicator 4V Power Indicator USB Power Indicator USB PORT4 Power Indicator, Not Populated USB PORT1 Power Indicator, Not Populated USB PORT2 Power Indicator, Not Populated USB PORT3 Power Indicator, Not Populated Skywire Status LED USB High Speed Indicator PN 30149 rev 2 ​NimbeLink Corp. All Rights Reserved. 13