WM8311 datasheet(206/302 Pages) WOLFSON

206 / 302 page

WM8311

Pre-Production

PP, May 2012, Rev 3.1

206

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16425

(4029h)

Touch

Control 2

TCH_PD_WK

WAKE transition select for Pen Down event

0 = Disabled

1 = Enabled

TCH_5WIRE

Touch Panel control mode

0 = 4-wire

1 = 5-wire

TCH_PDONLY

Select Automatic conversions only when Pen Down is

detected. (No effect on Manual conversion.)

0 = Normal

1 = Pen-Down only

TCH_ISEL

Pressure measurement current select

0 = 200uA

1 = 400uA

Note - this applies to 4-wire mode only

3:0

TCH_RPU [3:0]

0111

Pen-Down sensitivity (pull-up resistor)

0000 = 64k (most sensitive)

0001 = 64k / 2

0010 = 64k / 3

0011 = 64k / 4

….

1111 = 64k / 16 (least sensitive)

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16426

(402Ah)

Touch Data

TCH_PD1

Pen down status (indicates if the Pen Down was

detected prior to the TP measurement)

0 = Pen Down not detected

1 = Pen Down detected

11:0

TCH_X [11:0]

0000_0000

_0000

Touch panel X-axis data

(12-bit unsigned binary number)

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16427

(402Bh)

Touch Data

TCH_PD2

Pen down status (indicates if the Pen Down was

detected prior to the TP measurement)

0 = Pen Down not detected

1 = Pen Down detected

11:0

TCH_Y [11:0]

0000_0000

_0000

Touch panel Y-axis data

(12-bit unsigned binary number)

WM8311 Datasheet(PDF) 206 Page - Wolfson Microelectronics plc

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