Industrial Temperature USB 2.0 Flash Media Controller and Hub Combo

SMSC USB2640i/USB2641i

5

Revision 2.1 (06-29-09)

PRODUCT PREVIEW

OEM Selectable Features

Hub

A default configuration is available in USB2640i/USB2641i following a reset. The USB2640i/USB2641i

The USB2640i/USB2641i supports several OEM selectable features:

Compound Device support (port is permanently hardwired to a downstream USB peripheral

device), on a port-by-port basis.

Select over-current sensing and port power control on an individual (port-by-port) or ganged (all

ports together) basis to match the OEM’s choice of circuit board component selection.

Port power control and over-current detection/delay features

Configure the delay time for filtering the over-current sense inputs.

Configure the delay time for turning on downstream port power.

Bus- or self-powered selection

Hub port disable or non-removable configurations

Flexible port mapping and disable sequence. Ports can be disabled/reordered in any sequence to

support multiple platforms with a single design. The hub will automatically reorder the remaining

ports to match the host controller's numbering scheme.

Programmable USB differential-pair pin location.

- Eases PCB layout by aligning USB signal lines directly to connectors

Programmable USB signal drive strength. Recover USB signal integrity due to compromised

system environments using 4 levels of signal drive strength.

Indicate the maximum current that the 2-port hub consumes from the USB upstream port.

Indicate the maximum current required for the hub controller.

Flash Media Controller

Customize vendor ID, product ID, and device ID.

12-hex digit (max) serial number string

Customizable vendor specific data by optional use of external serial EEPROM

28-character manufacturer ID and product string for flash media reader/writer

LED blink interval or duration