MXT1664T3-ABESSQTP datasheet(59/98 Pages) MICROCHIP

59 / 98 page

MXT1664T3 2.0

 2018 Microchip Technology Inc.

DS40002054A-page 59

10.5.2

MAXIMUM TOUCHES REPORT

Read this report to receive the maximum number of touches (surface contacts) that can currently be reported.

Write this report to set the maximum number of touches to be reported.

The format of the Maximum Touches report packet is shown in Figure 10-22.

FIGURE 10-22:

MAXIMUM TOUCHES REPORT PACKET FORMAT

In Figure 10-22.

• Rpt ID is the report ID for the Maximum Touches reports (see Table 10-3 on page 50).

• Max Touch is the maximum number of touches to be reported by the device.

10.5.3

TOUCH HARDWARE QUALITY ASSURANCE (THQA) REPORT

The THQA data is reported to Microsoft Windows using the THQA report ID (see Table 10-3 on page 50 for the value).

The content of this data is defined by Microsoft.

10.6

USB Suspend Mode

When the device is used in USB configuration, the USB “System Suspend” event can be used to minimize current

consumption. Note that it is possible to put the device into deep sleep mode without also sending a “System Suspend”

event on the USB bus, but the current consumption is not as low. The USB controller must send a USB “System

Wakeup” event on the bus to bring the device out of suspend mode.

The device can also be configured to respond to USB “Remote Wakeup” requests. In this case, if the operating system

enables remote wakeup and the device is suspended, the device will continue to scan at a preset sensor refresh rate.

Use of the remote wake up feature and the sensor refresh rate are configured using the Digitizer HID Configuration T43

object (refer to the mXT1664T3 2.0 Protocol Guide for more information).

NOTE

The number of touches cannot be set to more than the maximum number of touches configured in the

device by the Multiple Touch Touchscreen T100 object.

Maximum

Number of

Touches

Reported

Max Touch

Reserved

(62 Bytes)

0x00

...

Rpt ID

MXT1664T3-ABESSQTP Datasheet(PDF) 59 Page - Microchip Technology