SX8661I07AULTRT Semtech, SX8661I07AULTRT Datasheet - Page 59

• Manufacturer Part Number: SX8661I07AULTRT
• Description: IC, Capacitive Button Touch And Proximity Controller, 8 SENSOR, MLPQ-28
• Manufacturer: Semtech

Specifications of SX8661I07AULTRT

• Controller Type: Capacitive Touch Screen
• Ic Interface Type: I2C
• Supply Voltage Range: 2.7V To 3.6V
• Operating Temperature Range: -40°C To +85°C

ADVANCED COMMUNICATIONS & SENSING
5.6 Analog Output Interface Parameters
AoiBtnMap
This register is used to map the available buttons to SWI-A, AOI-B or both. For example, to map buttons 0 to 3
and buttons 4 to 7 on AOI-B, write the following value to the AoiPwmBtnMap register
Revision v3.2, January 2011
Analog Output
Address
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
0x31
0x32
0x33
0x34
0x35
0x36
AoiCfg = 0xAA55;
Name
AoiCfg
AoiBtnMapMsb
AoiBtnMapLsb
AoiLevelBtn0
AoiLevelBtn1
AoiLevelBtn2
AoiLevelBtn3
AoiLevelBtn4
AoiLevelBtn5
AoiLevelBtn6
AoiLevelBtn7
AoiLevelIdle
Interface (AOI) Parameters
Bits
7:6
5:4
3
2:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
7:0
Low Power, Capacitive Button Touch and Proximity Controller
Description
Reserved (0x00).
Defines AoiLevelDuringBuzzer (same for A&B).
0x00: AOI button level (default)
0x01: AOI Idle level
0x10: min level (0V)
0x11: max level( VDD)
Defines Aoi pwm period (same for A&B).
0: 0xFF (255) (default)
1: 0x3F (63)
Reserved (0x01)
Button[7]
Button[6]
Button[5]
Button[4]
Button[3]
Button[2]
Button[1]
Button[0] or Proximity
Defines the level index (cf Table 8) for Buttons, Idle or Proximity (for CAP0)
The level index should be smaller or equal to Aoi pwm period as defined in
AoiCfg[3].
0x00: 0
0x01: 1
…
0xFF: 255
Default AoiLevelBtn0: 0xFF
Default AoiLevelBtn1: 0x2E
Default AoiLevelBtn2: 0x45
Default AoiLevelBtn3: 0x5D
Default AoiLevelBtn4: 0x74
Default AoiLevelBtn5: 0x8B
Default AoiLevelBtn6: 0xA3
Default AoiLevelBtn7: 0xBA
Default AoiLevelIdle: 0xFF.
Table 22
© 2011 Semtech Corp.
AOI Parameters
59
(8 sensors) with LED Drivers and Analog Output
Maps a button touch to one of the two Analog Output
Interfaces (AOI-A / AOI-B), or both.
00 : None
01 : AOI-A (GPIO7)
10 : AOI-B (GPIO6)
11 : Both
Default: 0x5555, i.e. Btn[7..0] mapped on AOI-A
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