Cirrus-logic EP93xx Manual do Utilizador descarregar pdf (Página 760)

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101

25-22 DS785UM1

Analog Touch Screen Interface

EP93xx User’s Guide

TSSetup2

Address:

0x8090_0024

Default:

0x0000_0000

Definition:

Touch screen Setup Register #2.

Bit Descriptions:

RSVD: Reserved. Unknown during read.

RINTEN: Synchronous Data Ready Interrupt Enable. Setting this bit

results in an interrupt whenever the Synchronous Data

Ready (SDR) bit in the TSXYResult register is set. The

SDR bit will never be set unless the EN bit of the TSSetup

S28EN: Switch 28 Enable. The touch detect NAND gate can be

triggered separately by bit 28 of the switch registers or in

conjunction with bit 22 which also controls the X+ pullup.

0 = NAND gate controlled by bit 22.

1 = NAND gate controlled by bit 28.

NSIGND: Unsigned ADC output type. The touch input information

can be processed as signed or unsigned integers. The

default bit value is “0” for signed.

DISDEV: Disable Deviation check for both X and Y ADC sampling.

Setting this bit high causes the deviation test to always

pass and forces a sample set.

DTMEN: Deviation Timer Enable. Setting this bit high enables the

timeout for the deviation check. If the deviation check fails

255 times for either the X or Y axis the algorithm will skip

this check and force a sample set anyway.

DINTEN: Deviation Error Interrupt Enable. Setting this bit high

causes an interrupt when the sample deviation check fails

255 times for either the X or Y axis. The DTMEN bit must

be high for this bit to be effective.

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RSVD

1514131211109876543210

RSVD RINTEN S28EN NSIGND DISDEV DTMEN DINTEN DEVINT PINTEN PENSTS PINT NICOR TINT

1 2 ... 755 756 757 758 759 760 761 762 763 764 765 ... 823 824

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Cirrus-logic EP93xx Manual do Utilizador Página 760

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