Datasheet

951
SAM9G45 [DATASHEET]
Atmel-6438O-ATARM-SAM9G45-Datasheet_08-Dec-15
39.11.4 TSADCC Touchscreen Register
Name: TSADCC_TSR
Address: 0xFFFB000C
Access: Read/Write
• TSFREQ: Touchscreen Frequency in Interleaved Mode
Effective only if the Touchscreen Interleaved Mode is selected. Defines the Touchscreen Frequency compared to the Trig-
ger Frequency.
If TSFREQ is 0 or 1, the Touchscreen Frequency is a sixth of the Trigger Frequency.
Otherwise:
Touchscreen Frequency = Trigger Frequency / (2
TSFREQ+1
)
• TSSHTIM: Sample & Hold Time for Touchscreen Channels
Programming 0 for TSSHTIM gives a Touchscreen Sample & Hold Time equal to 1/ADCCLK.
Touchscreen Sample & Hold Time = TSSHTIM/ADCCLK
31 30 29 28 27 26 25 24
–––– TSSHTIM
23 22 21 20 19 18 17 16
––––––––
15 14 13 12 11 10 9 8
––––––––
76543210
–––– TSFREQ