wm9713 Wolfson Microelectronics plc, wm9713 Datasheet - Page 122

• Manufacturer Part Number: wm9713
• Description: Ac?97 Audio + Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

7Ah
read only
7Ch
read-only
7Eh
read-only
WM9713L
Registers 7Ah is a read-only register which reports the touchpanel interface status and measurement results.
Register 7Ch and 7Eh are read-only registers that indicate to the driver that the codec is a WM9713L.
w
REGISTER
ADDRESS
REGISTER
ADDRESS
15
14:12
11:0
15:8
7:0
15:8
7:0
BIT
BIT
PNDN
ADCSRC
ADCD
F7:0
S7:0
T7:0
REV7:0
LABEL
LABEL
0 (pen up)
000 (none)
000h
57h
4Dh
4Ch
13h
DEFAULT
DEFAULT
Pen Status (Read-only)
0 = Pen up
1 = Pen down
Touchpanel ADC Source
000 = No measurement
001 = X co-ordinate measurement
010 = Y co-ordinate measurement
011 = Pressure measurement (4-wire only)
100 = COMP1/AUX1 measurement (pin 29)
101 = COMP2/AUX2 measurement (pin 30)
110 = AUX3 measurements (SPKVDD/3)
111 = WIPER/AUX4 measurement (pin 12)
Touchpanel ADC Data (Read-only)
Bit 0 = LSB
Bit 11 = MSB
ASCII character “W” for Wolfson
ASCII character “M”
ASCII character “L”
Device identifier
DESCRIPTION
DESCRIPTION
PP Rev 3.2 September 2008
Pre-Production
Touchpanel
Interface
Intel’s AC’97
Component
Specification
, Revision
2.2, page 50
REFER TO
REFER TO
122