Non-Mux (Non-Multiplexing) Mode - Sierra Wireless AC595 Developer's Manual

Mini card/aircard/compass, usb driver

Hide thumbs

Table Of Contents

Table of Contents

Mini Card / AirCard / Compass USB Driver Developer's Guide

Note: The logical endpoint

numbers in this guide are used

for ease of reading. When

developing your drivers, you

must use the actual, physical,

endpoints.

Note: The module always starts

in non-MUX mode – the host can

then choose to put it in MUX

mode or take it out.

over a second pair of endpoints. If supported, Mass Storage

is implemented over a third set of endpoints.

USB endpoints

USB endpoints are uniquely addressable portions of a USB

device used to transfer information between the host and

module. Each defined endpoint is a unidirectional link from

the modem to the host (IN) or from the host to the modem

(OUT).

Each physical endpoint is defined in

and is referred to in this document by a logical endpoint

number (for example, endpoint '2') and direction (IN or OUT).

Where bidirectional communication is required for a specific

data service, two endpoints are used:

•

AC8XX / M C8775 / M C8775V / M C8780 / M C8781: These

endpoints use the same logical endpoint number. For

example, where endpoints 2‐IN and 2‐OUT are used for

bidirectional transfer of AT commands between the host

and module, these endpoints have the same logical

endpoint number (2) and different physical endpoint

numbers (IN is 0x82 and OUT is 0x02).

•

C8XX / M C8785V / M C8790 / M C8790V / M C8791V / M C8792V:

Depending on the service, these endpoints may or may not

have the same logical endpoint number. For example,

endpoints 3‐IN and 3‐OUT are used for transfer of NMEA

commands, while 5‐IN and 4‐OUT are used for transfer of

AT commands.