NXP Semiconductors K32 L2A Series, Reference Manual, Page: 1267 / 1379

49.2 External signal description
The TSI module contains up to 16 external pins for touch sensing. The table found here
describes each of the TSI external pins.
Table 49-2. TSI signal description
Name Port Direction Function Reset state
TSI[15:0] TSI I/O TSI capacitive pins.
Switches driver that
connects directly to the
electrode pins TSI[15:0]
can operate as GPIO
pins. I/O
49.2.1 TSI[15:0]
When TSI functionality is enabled , the TSI analog portion uses the corresponding
channel to connect external on-board touch capacitors. The PCB connection between the
pin and the touch pad must be kept as short as possible to reduce distribution capacity on
board.
49.3 Register definition
This section describes the memory map and control/status registers for the TSI module.
TSI memory map
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
4006_2000 TSI General Control and Status Register (TSI0_GENCS) 32 R/W 0000_0000h 49.3.1/1267
4006_2004 TSI DATA Register (TSI0_DATA) 32 R/W 0000_0000h 49.3.2/1272
4006_2008 TSI Threshold Register (TSI0_TSHD) 32 R/W 0000_0000h 49.3.3/1273
49.3.1 TSI General Control and Status Register (TSIx_GENCS)
This control register provides various control and configuration information for the TSI
module.
Chapter 49 Touch Sensing Input (TSI)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 1267