IQS550EV03 S Azoteq, IQS550EV03 S Datasheet - Page 26

• 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

5.6.13 Filter Settings (0x13)
The various settings relating to the on-chip
filters can be adjusted / configured here. All
these filters can be disabled if not required.
Also, the damping factors (amount of filtering)
can be adjusted for these independently. This
is because the hover requires more filtering,
whereby the touch points have either a static
or
Copyright © Azoteq (Pty) Ltd
All Rights Reserved.
Byte
1
2
3
4
5
6
dynamic
ATI Target –
ATI Target –
ATI Target –
ATI Target –
High Byte
High Byte
Low Byte
Low Byte
ATIC
ATIC
Data
filter
implementation.
outside the selected
ATI settings applied
ATI settings applied
TrackpadRx block)
within the selected
TrackpadRx block
channels (falling
TrackpadTx and
TrackpadTx and
channels (falling
to non-trackpad
TotalTx block)
and within the
TotalRx and
Applicable
to trackpad
channels
Table 5.10
ProxSense
IQ Switch
The
IQS550 Trackpad Datasheet
ATI Settings Bytes
®
damping parameter for the touch and hover
co-ordinate, and ProxMode count filters are
used as this value/256.
count filter damping value is 1/2
smaller these fractions, the MORE filtering will
occur. More filtering provides stable data at
the cost of responsiveness.
The bytes and definitions are provided.
Revision 1.04
compensation parameter
compensation parameter
Series
Automated ATI Target
Automated ATI Target
®
ATI C value (0 to 31
ATI C value (0 to 31
value for ATI
value for ATI
Description
decimal)
decimal)
The normal mode
0 (values range
0 (values range
from 0 to 31
from 0 to 31
decimal)
decimal)
Default
November 2012
600
600
value
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The