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WM9713 데이터시트(PDF) 64 Page - Wolfson Microelectronics plc

부품명 WM9713
상세설명  AC 97 AUDIO TOUCHPANEL CODEC
PDF  111 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM9713 데이터시트(HTML) 64 Page - Wolfson Microelectronics plc

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WM9713L
Preliminary Technical Data
1
PTD, March 2004, Rev 2.2
64
POWER MANAGEMENT
To save power, the touchpanel digitiser and the pen-down detector can be independently disabled
when they are not used. The power consumption of the pen-down detector is normally negligible,
except when the pen is down.
The pen ADC is powered-down using PADCPD, register 3Ch bit 15.
The state of the digitiser and pen down detector is controlled by the following bits.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
3Ch
15
PADCPD
1 = off
Pen ADC power down
15:14
PRP
00
Pen ADC/AUX ADC enable
00 – Pen digitiser off, pen detect off, no
wake-up on pen down (default)
01 – Pen digitiser powered off, pen detect
enabled, touchpanel digitiser wakes up
(changes to state 11) on pen-down
10 – Pen digitiser off, pen detect enabled,
no wake-up on pen down
11 – Pen digitiser and pen detect enabled
78h
13
RPR
0
Wake-up on pen-down mode
0: Wake-up the AC-Link only (hold
SDATAIN high until controller sends warm
reset or cold reset)
1: Wake-up the WM9713L without waiting
for a reset signal from the controller
Table 46 Touchpanel Digitiser Control (Power Management)



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