Philips MIIC-201D/U manual

2.1USB Connector

The USB connector provides connection from the I2C adapter to a USB port on the host computer or self-powered USB hub. The iPort DLL/USB operates as a bus-powered USB device, with limited target system power. Additional target system power can be provided via an included external power supply.

2.1.1 Virtual Communications Port (VCP)

The iPort DLL/USB provides a Virtual Communications Port (VCP) interface via a host computer driver. Application programs running on the host computer communicate with the iPort DLL/USB via the standard iPort DLL.

2.2+5VDC Power Jack

The iPort DLL/USB is a bus-powered USB device. When deriving power from the Universal Serial Bus only, a limited amount of power is available to a target system via +5V wire in the I2C Interface Connector. Additional power for a target system can be provided via the +5VDC Power Jack. When connected to the +5VDC Power Jack, an external power supply will remove all target system power load from the USB and replace it with power from the external power supply. See the “Hardware Setup” section for additional details.

2.3I2C Interface Connector

The I2C adapter includes a four wire, positive locking, modular receptacle connector (see Appendix A) for interfacing to an external I2C Bus. Lines provided include I2C Clock (SCL), I2C Data (SDA), Ground, and +5V.

Minimum wiring for I2C communications include I2C Clock, Data, and Ground.