EV6550D CML Microcircuits

EV6550D Evaluation Kit for CMX655D UM6550/4 October 2019 USER MANUAL Provisional Features EV6550D On-board supply regulators operate from a o Demonstrates the CMX655D single 5 volt supply o Sockets to support Digital MEMS microphone Host Port allows for quick setup with PE0003 evaluation boards Optional pull-ups and address selection for TWI Direct Class-D connections for full evaluation of Class-D On board 24.576MHz clock EV6550D Serial Number Mod 1 2 3 4 5 6 7 8 9 1 Brief Description The EV6550D Evaluation Kit is designed to assist in the evaluation and application development of the CMX655D. The kit is in the form of a populated PCB comprising a CMX655D IC and appropriate supporting components and circuitry. With the class-D disabled, the board runs from a single +5V supply sourced from the PE0003 or bench power supply. The board allows for the CMX655D to be run at 3.3V or 1.8V via jumper configuration. If the class-D is enabled an additional supply is required, this is connected directly to the CMX655D. The CMX655D supply must be set to 3.3V if the class-D is enabled. The board is fitted with a Host port connector allowing the EV6550D to be operated by connection to the Host port on a CML PE0003 Universal Interface Card, and used with the associated PC GUI software, or by direct connection between the CMX655D SPI (Serial Peripheral Interface) or TWI (Two Wire Interface) and the user s C development application or emulation system. The EV6550D is designed to interface with MEMS (Micro-ElectroMechanical System) microphone evaluation boards. These boards are shipped and fitted with the Evaluation Kits. However should they be removed during testing it is important that, when refitted, they are correctly orientated with the aperture on the microphone aligned to the right (see diagram above). 2019 CML Microsystems Plc Evaluation Kit for CMX655D EV6550D 2019 CML Microsystems Plc 2 UM6550/4