FAH4840-269128 Datasheet, PDF (10/21 Pages) List of Unclassifed Manufacturers – FAH4840 Haptic Driver for Linear Resonant Actuators (LRAs)

Table 3.
Address:
Reset Value:
CTRL1
0x00
1xxxx000
Bit #
Name
Type
7
HAPTIC_EN
R/W
6:3
Reserved
2
EN_LPF
R/W
1
SE
R/W
0
VREG_VCM
R/W
1: Haptic Drive Enable Mode
0: Power-Down Mode
Function
1: Enable internal 20 kHz LPF
0: Disable internal LPF
1: Single-Ended Mode
0: Differential Mode
1: Outputs use VREG/2 as VCMO
0: Outputs use VDD/2 as VCMO
Table 4.
Address:
Reset Value:
CTRL2
0x01
00110011
Bit #
Name
7:5
IN_RES[2:0]
4 EN_PWM_DET
3:0
VREG_OUT[3:0
]
Type
R/W
R/W
R/W
Function
Input Resistance.
000: 8 kΩ
001: 10 kΩ
010: 12 kΩ
011: 14 kΩ
100: 16 kΩ
101: 18 kΩ
110: 20 kΩ
111: 22 kΩ
1: Enable PWM detection circuit
0: Disable PWM detection circuit
0000 1.4 V
0001 1.6 V
0010 1.8 V
0011 2.0 V
0100 2.2 V
0101 2.4 V
0110 2.6 V
0111 2.8 V
1000 3.0 V
1001 3.2 V
During LRA calibration stage 1, VREG_OUT is always 2.0 V.
© 2013 Fairchild Semiconductor Corporation
FAH4840 • Rev. 1.0.0
10
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