GOODIX CONFIDENTIAL
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interference. The threshold is differencial threshold. When the noise changes greatly, configure the differential
threshold to a larger value. The threshold can be adjusted according to the touching area and distance of two
hotknot terminals. It is suggested that this threshold be greater than 15 and 20 is highly recommended.
[0x80A4] Dump_Shift
The Dump_Shift is applicable to the amplification of HotKnot raw data. Normal configuration is 2~4.
[0x80A5] Rx_Gain
The Rx_Gain is applicable to the receiving hardware configuration of HotKnot. The mechanism is the same as that
of configuration of TP Rx_Gain.
[0x80A6-0x80A9] Freq_Gain0~3
Software gain coefficient of HotKnot signals. The 7 frequencies used by HotKnot are ranged from 150KHz to
450KHz
，
one step is 50KHz
。
Adjust the software gain value according to the actual sampled raw data of frequency
points to improve the data consistency between frequency points and minimize the signal diversity between
different frequencies.
[0x80B3]
Combine_Dis
Bit7~4:
Distance for adjacent rectangles to be combined in Gesture mode, 0 to 15 configurable; the distance
for adjacent touch points to be combined is calculated as: sqrt (2*(Combin_Dis)) pitch. For backward compatibility,
being configured to 0 means the distance for adjacent touch points to be combined is 2 pitches.
Bit3~0:
Distance for adjacent rectangles to be combined, 0 to 15 configurable; the distance for adjacent touch
points to be combined is calculated as: sqrt (2*(Combin_Dis)) pitch. For backward compatibility, being configured
as 0 means the distance for adjacent touch points to be combined is 2 pitches.
[0x80B4]
Split_Set
Bit7~4:
Distance for a large-area rectangle to be split, 0 to 15 configurable; distance for a large-area touch
point to be split is calculated as: sqrt(2*(Split_Set)) pitch. For backward compatibility, being configured as 0
means defaulting as previous setting, and the distance for an adjacent touch point to be split is sqrt (12) pitch.
Bit3~0:
Distance for a normal-size rectangle to be split, 0 to 15 configurable; distance for a normal-size touch
point to be split is calculated as: sqrt (2*(Split_Set)) pitch. For backward compatibility, being configured as 0
means defaulting as previous setting, and the distance for a normal-size touch point to be split is sqrt (7) pitch.
3.3 Coordinate information
Addr
Access
bit7
bit6
bit5
bit4
bit3 bit2 bit1
bit0
