UPD31172 Datasheet (NEC) - MOS INTEGRATED CIRCUIT

UPD31172, MOS INTEGRATED CIRCUIT

The µPD31172 (commercial name: VRC4172) is a companion chip designed for NEC’s µPD30121 microprocessor (commercial name: VR4121).

The VRC4172 has the following functions available on chip: a USB host controller, an IEEE1284 parallel controller, a 16550 serial controller, a PS/2 controller, general-p

UPD31172 Features

* Directly connectable to VR4121

* On-chip USB host controller

* USB ports: 2

* Compliant with the USB OpenHCI specifications, release 1.0

* Communicates with USB device asynchronously with host CPU

* Full-speed (12 Mbps) and low-speed (1.5 Mbps) modes