Si86xxCOM-EVB Si86XX CMOS DIGITAL ISOLATOR-BASED SERIAL INTERFACE USERS GUIDE 1. Introduction SI86xx devices are CMOS-based galvanic isolators (1 kV/2.5 kV/5 kV) designed for industrial, commercial, and medical isolation applications. They are available in various channel counts (1/2/3/4/5/6), speeds (1 and 150 Mbps), and options in two package options (narrow and wide body SOIC). They are also available in 2 unidirectional or bidirectional (I C) channels option. 2. Kit Contents The Si86xxCOM Evaluation Board contains the following items: Si86xxCOM evaluation board show casing: Si8642BB 4-channel unidirectional 1 Mbps digital isolator, narrow body, 2.5 kV Si8621BB 2-channel unidirectional 150 Mbps digital isolator, narrow body, 2.5 kV Si8622ED 2-channel unidirectional 1 Mbps digital isolator, wide body, 5 kV* *Note: The creepage and clearance are defined by the narrow-body SOIC (2.5 kV) isolators used in the EVB and must NOT be used for 5 kV isolation testing. 2.1. Hardware Overview The Si86xxCOM Evaluation Board implements the isolated physical layer for RS232, RS422/485, and CAN bus serial transceivers. Key features include: Isolated RS232 transceiver: Maximum data rate of 1 Mbps. Isolated TXD, RXD, RTS, and CTS signals with DB9 connector interface. Isolated 4 Wire RS422/485: Maximum data rate of 52 Mbps failsafe full duplex with passive flow control. DB9 and RJ45 connectors. Isolated CAN Bus: Maximum data rate of 1 Mbps, which implements the ISO 11898-3 physical layer and DB9 connector. A top-level hardware block diagram is shown in Figure 1. The RS232 and RS422/RS485 isolated transceivers operate as a repeater, and the CAN Bus interface operates as an isolated controller-side interface. Figure 1. Top-Level Hardware Overview Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 0.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice October 29, 2021Si86xxCOM-EVB Figure 2. Si86xxCOM Evaluation Board The evaluation board photo of Figure 2 shows the Skyworks Si86xx digital isolators placed at the center of the board. The RS232 and 422/485 isolated transceivers are implemented with narrow-body, 2.5 kV Si8642BB and Si8621BB digital isolators. The medical grade CAN bus interface is implemented with a wide-body Si8622ED digital isolator rated at 5 kV.* *Note: The creepage and clearance are defined by the narrow-body SOIC (2.5 kV) isolators used in the EVB and must NOT be used for 5 kV isolation testing. 3. Required Equipment Two dc power supplies (isolated) Two red and black banana-to-banana cables One straight-through RS232 cable (3 3, 2 2) (e.g. StarTech Model MXT100 25) One crossover (null modem) RS232 cable (3 2, 2 3) (e.g. StarTech Model SCNM9FM) One PC with COM1 port Si86xxCOM evaluation board (under test) Si86xxCOM User s Guide (this document) 3.1. Optional Equipment (User Can Test the Functionality of Standalone EVB Using the Following Equipment) One 4-channel oscilloscope, 250 MHz BW (e.g., TDS784A) Dual output Pattern/Function generator, 80 MHz data rate (e.g., Agilent 81104A) Two BNC to hook cable (e.g., Pomona 3788) 2 Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com Rev. 0.1 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice October 29, 2021