Cypress PSoC CY8CTMG20 Series, Technical Reference Manual

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214 PSoC CY8CTMG20x and CY8CTST200 TRM, Document No. 001-53603 Rev. *C
CS_CR3
0,A3h
21.3.26 CS_CR3
TrueTouch Control Register 3
This register contains control bits primarily for the proximity detection algorithm.
For additional information, refer to the Register Definitions on page 92 in the TrueTouch Module chapter .
6 REFMUX This bit selects the reference voltage for the input of the reference buffer.
0
Select REFHI (1.2V).
1 Select VREF (1.0V).
5 REFMODE This bit allows manual connection of the reference buffer output to the analog global bus. If either
CI_EN = 1 or RO_EN = 1 in the CS_CR2 register, this bit has no effect (reference buffer connection is
off or controlled by other settings).
0
No connection.
1 Reference buffer connected to the analog global bus.
4 REF_EN This bit enables the reference buffer to drive the analog global bus.
0
Reference buffer is disabled, powered down.
1 Reference buffer is enabled. Connection to the analog global bus is controlled by the REF-
MODE bit in this register, and by the CI_EN and RO_EN bits in the CS_CR2 register.
3:2 LPFilt[1:0] Low pass filter approximate time constant.
00b 1
μ
s
01b 2
μ
s
10b 5
μ
s
11b 10
μ
s
1:0 LPF_EN[1:0] Enable this bit for the low pass filter.
00b
No connection of either comparator channel to low pass filter.
01b Connect comparator channel 0 through the low pass filter.
10b Connect comparator channel 1 through the low pass filter.
11b Connect both comparator channel inputs together, and through the low pass filter.
Individual Register Names and Addresses:
0,A3h
CS_CR3 : 0,A3h
7 6 5 4 3 2 1 0
Access : POR RW : 0 RW : 0 RW : 0 RW : 0 RW : 0 RW : 0
Bit Name REFMUX REFMODE REF_EN LPFilt[1:0] LPF_EN[1:0]
Bit Name Description
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