NXP Semiconductors KL25 Series - TSI Threshold Register (Tsix_Tshd)

TSIx_DATA field descriptions (continued)
Field Description
1110 Channel 14.
1111 Channel 15.
27–24
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
23
DMAEN
DMA Transfer Enabled
This bit is used together with the TSI interrupt enable bits(TSIIE, ESOR) to generate a DMA transfer
request instead of an interrupt.
0 Interrupt is selected when the interrupt enable bit is set and the corresponding TSI events assert.
1 DMA transfer request is selected when the interrupt enable bit is set and the corresponding TSI
events assert.
22
SWTS
Software Trigger Start
This write-only bit is a software start trigger. When STM bit is clear, write "1" to this bit will start a scan.
The electrode channel to be scanned is determinated by TSI_DATA[TSICH] bits.
0 No effect.
1 Start a scan to determine which channel is specified by TSI_DATA[TSICH].
21–16
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
15–0
TSICNT
TSI Conversion Counter Value
These read-only bits record the accumulated scan counter value ticked by the reference oscillator.
42.3.3 TSI Threshold Register (TSIx_TSHD)
Address: 4004_5000h base + 8h offset = 4004_5008h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
THRESH THRESL
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
TSIx_TSHD field descriptions
Field Description
31–16
THRESH
TSI Wakeup Channel High-threshold
This half-word specifies the high threshold of the wakeup channel.
15–0
THRESL
TSI Wakeup Channel Low-threshold
This half-word specifies the low threshold of the wakeup channel.
42.4 Functional description
Chapter 42 Touch Sensing Input (TSI)
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 793