IQS550EV03 S Azoteq, IQS550EV03 S Datasheet - Page 23

• Manufacturer Part Number: IQS550EV03 S
• Description: Touch Sensor Development Tools Trackpad Demo for IQS550
• Manufacturer: Azoteq

Specifications of IQS550EV03 S

• Tool Is For Evaluation Of: IQS550
• Interface Type: I2C, SPI
• Operating Voltage: 1.65 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C

Bit 6:
Bit 5:
Bit 4:
Bit 3:
Bit 2:
Bit 1:
Bit 0:
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All Rights Reserved.
AUTO_MODES: Automatic mode switching between ProxMode and Normal
Unused
PM_RESEED: Reseed the ProxMode (PM) channel
MODE_SELECT: Select charging mode (if AUTO_MODES is not set)
AUTO_ATI: Begin Automatic ATI Compensation routine
TRACKPAD_RESEED: Reseed all the Normal Mode channels
EVENT_MODE: Skip communication when no user activity is present
Charging Mode
0 = Mode is decided by the MODE_SELECT bit
1 = Mode is automatically controlled
0 = Do not reseed Long-Term Average
1 = Reseed Long-Term Average with current environment
Note: This only executes (once) after the communication window is completed.
0 = Normal Mode channels charging
1 = ProxMode channel charging
0 = No nothing
1 = Begin Auto-ATI routine (affected channels depending on current mode)
The AUTO-ATI bit must be sent ONCE to begin the AUTO-ATI routine. The ATI
Compensation will be setup so that each target is close to the respective ATI
Target value selected. The bit clears automatically on chip. This bit will then
configure the ATI compensation relative to the current mode selected; for
example if the system is in ProxMode, then the PM ATI Target will be used, and
the ProxMode channel will be configured, similarly the normal mode channels
will be configured if this is the current mode.
Note: This routine only executes after the communication window is completed.
Also the following communication cycle will occur after the routine is completed.
0 = No not reseed Long-Term Average
1 = Reseed Long-Term Average with current environment
Note: The RESEED bit for both the trackpad and the ProxMode must be sent
only ONCE to reseed the Long-Term Averages, the bit clears automatically on
chip. This reseed only executes after the communication window is completed.
0 = Normal communication / each cycle
1 = Communication aborted until selectable activity (prox/touch/snap) is
detected, or the master forces communication
ProxSense
IQ Switch
IQS550 Trackpad Datasheet
®
Revision 1.04
Series
®
November 2012
Page 23 of 50