MXT1664T3-C2TESSQTP datasheet(58/98 Pages) MICROCHIP

58 / 98 page

MXT1664T3 2.0

DS40002054A-page 58

 2018 Microchip Technology Inc.

In Table 10-4 on page 57 and Table 10-5:

•Byte 1:

Status is the status of the touch detection. This bit is set to 1 if touch is detected, and set to 0, if no touches are

detected.

Touch ID identifies the touch for which this is a status report (starting from 1).

• Bytes 2 to 9:

X and Y positions are the X and Y coordinates. These are scaled to 12-bit resolution. This means that the upper

four bits of the MSByte will always be zero. Bytes 4, 5, 8 and 9 are reserved when TCHGEOMEN field is set to 0.

•Byte 10:

Touch Width reports the width of the detected touch when TCHGEOMEN is set to 1.

Reserved when TCHGEOMEN is set to 0

• Byte 11:

Touch Height reports the height of the detected touch when TCHGEOMEN is set to 0.

Reserved when TCHGEOMEN is set to 0

• Byte 56 to 57:

Scan Time is the timestamp associated with the current report frame (in units of 100 µs).

• Byte 58:

Contact Count is the number of active touches to be sent in one package, for the first touch only. Subsequent

packets for subsequent active touches have a Count of 0.

Touch width

Touch height

12 – 22

Touch data for second touch – same format as bytes 1 – 11

23 – 33

Touch data for third touch – same format as bytes 1 – 11

34 – 44

Touch data for fourth touch – same format as bytes 1 – 11

45 – 55

Touch data for fifth touch – same format as bytes 1 – 11

56 – 57

Scan time

Contact count

TABLE 10-5:

TOUCH REPORT FORMAT WHEN TCHGEOMEN IS DISABLED

Byte

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

USB Report ID

Touch ID (first touch)

Reserved

Status

Touch ID

Touch X Position LSByte (first touch)

Touch X Position MSBits (first touch)

Reserved

Touch Y Position LSByte (first touch)

Touch Y Position MSBits (first touch)

Reserved

12 – 22

Touch data for second touch – same format as bytes 1 – 11

23 – 33

Touch data for third touch – same format as bytes 1 – 11

34 – 44

Touch data for fourth touch – same format as bytes 1 – 11

45 – 55

Touch data for fifth touch – same format as bytes 1 – 11

56 – 57

Scan time

Contact count

TABLE 10-4:

TOUCH REPORT FORMAT WHEN TCHGEOMEN IS ENABLED (CONTINUED)

Byte

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

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