Read Parameter Request 16 - 3M MicroTouch EX113 Reference Manual

Dual-mode controller

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Table Of Contents

Table of Contents

Offset

Field

FW major revision

FW minor revision

Features

Constants Checksum 2

Max Param Write

Reserved

Code Checksum

ASIC type

Controller Type – The identifier M1 is used. M identifies it as an EX based USB

controller. The 1 identifies it as the first model of this type. This value is treated as an

integer, not two characters. This means that the 1 will be transmitted first.

Note: If you received an identifier of M0, you must issue a Reset with a wValue of 5.

This must be done twice to lock in the values.

FW Major Revision – This can range from 0 to 99. This is a BCD value, i.e., major

revision 23 is sent as 0x23.

FW Minor Revision – This can range from 0 to 99. This is a BCD value, i.e., minor

revision 23 is sent as 0x23.

Features – This identifies the special features of the controller. This is a bitmapped field.

Constants Checksum – 2-byte checksum for the constants data section.

Max Parameter Write -- The largest transfer that can take place. This only affects the

Read Parameter requests.

Code Checksum – 4-byte checksum for the program section of the code.

ASIC Type – this indicates the type and version of the ASIC in the controller. The value

0x0100 indicates the first EX revision. The high byte is used to note major ASIC

changes, such as a new ASIC family, and the low byte indicates changes within a family.