NXP Semiconductors MKW01Z128, Reference Manual, Page: 820 / 884

35.2 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 35-2. 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
35.2.1 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.
35.3 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
4004_5000 TSI General Control and Status Register (TSI0_GENCS) 32 R/W 0000_0000h 35.3.1/689
4004_5004 TSI DATA Register (TSI0_DATA) 32 R/W 0000_0000h 35.3.2/694
4004_5008 TSI Threshold Register (TSI0_TSHD) 32 R/W 0000_0000h 35.3.3/695
35.3.1 TSI General Control and Status Register (TSIx_GENCS)
This control register provides various control and configuration information for the TSI
module.
Chapter 35 Touch Sensing Input (TSI)
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
Freescale Semiconductor, Inc. 689