sx8675iwltrt Semtech Corporation, sx8675iwltrt Datasheet - Page 51
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sx8675iwltrt
Manufacturer Part Number
sx8675iwltrt
Description
Haptics Enabled Multitouch 4/5-wire Resistive Touchscreen Controller With Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8675IWLTRT.pdf
(64 pages)
- Current page: 51 of 64
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ADVANCED COMMUNICATIONS & SENSING
Bits
7:6
5:3
2
1
0
Rev 1 – 25
6:5
3:0
4
HAPTTYPEEN
HAPTRANGE
HAPTGAIN
Variable
Reserved
HAPTSQUELCH
TEMPWRNIRQEDG
TEMPALRMIRQEDG
TEMPALWAYSON
th
July 2011
Default
0000
000
00
00
0
0
0
0
Table 18 : RegHapt0 (Addr 0x05)
Table 19 : RegHapt1 (Addr 0x06)
Defines the haptics load:
00 : OFF. Haptics block disabled.
01 : LRA
10 : ERM
11 : Reserved
Defines MIN prescaler value:
0 : 128
1 : 256
Defines the haptics output gain:
0000 : 1
0001 : ~1.17
0010 : ~1.34
0011 : ~1.51
0100 : ~1.67
0101 : ~1.84
0110 : ~2.01
0111 : ~2.18
1000 : ~2.35
1001 : ~2.52
1010 : ~2.69
1011 : ~2.86
1100 : ~3.03
1101 : ~3.20
1110 : ~3.37
1111 : ~3.53
Exact formula is 1 + Code * 0.169
Description
Defines the Haptics squelch, i.e. the range of AmplitudeCode
(HAPTAMP or MIN duty cycle equivalent, Cf. § 6) which will generate a
0V output (VMOUT):
000 : OFF. No squelch.
001 : -1 < AmplitudeCode < +1 (ie. AmplitudeCode = 0)
010 : -2 < AmplitudeCode < +2
011 : -4 < AmplitudeCode < +4
100 : -8 < AmplitudeCode < +8
101 : -16 < AmplitudeCode < +16
110 : -32 < AmplitudeCode < +32
111 : -64 < AmplitudeCode < +64
Enables TempWrnIrq to be generated when the chip temperature gets
below the alarm threshold :
0 : OFF. TempWrnIrq generated only when the chip temperature gets
above the alarm threshold.
1 : ON. TempWrnIrq generated both when the chip temperature gets
above and below the alarm threshold.
Enables TempAlrmIrq to be generated when the chip temperature gets
below the alarm threshold :
0 : OFF. TempAlrmIrq generated only when the chip temperature gets
above the alarm threshold.
1 : ON. TempAlrmIrq generated both when the chip temperature gets
above and below the alarm threshold.
Enables the temperature monitoring even when no operation (touch,
proximity, haptics) is enabled:
0 : OFF
1 : ON
Resistive Touchscreen Controller with Proximity Sensing
51
SX8674/SX8675/SX8676
Haptics Enabled Multitouch 4/5-Wire
www.semtech.com
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