WM9713LGEFL/RV Wolfson Microelectronics, WM9713LGEFL/RV Datasheet - Page 72

• Manufacturer Part Number: WM9713LGEFL/RV
• Description: Audio CODECs Stereo AC'97 CODEC T/P Interface
• Manufacturer: Wolfson Microelectronics

Specifications of WM9713LGEFL/RV

• Number Of Adc Inputs: 1
• Number Of Dac Outputs: 1
• Conversion Rate: 8 KSPs
• Interface Type: AC97
• Resolution: 12 bit
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-48
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 1 ADC, 1 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM9713L
w
MEASUREMENT TYPES
The ADCSEL control bits determine which type of measurement is performed (see below).
Table 49 Touchpanel Digitiser Control (Measurement Types)
When COO is ‘0’, the WM9713L performs a single measurement – either in polling mode or
continuously, as indicated by the CTC bit.
ADCSEL[7:1] bits. If CTC=0 (polling mode) then only one of the ADCSEL[7:1] bits should be set.
selected
“X,Y,PRESSURE,AUX1,AUX2,AUX3,AUX4…”
The co-ordinate mode (COO = ‘1’) makes it easier to obtain co-ordinate pairs rather than single co-
ordinates. In polling-coordinate mode (CTC = ‘0’, COO = ‘1’), the WM9713L performs an X co-
ordinate, then a Y co-ordinate, followed by a single additional measurement determined by
ADCSEL[7:1], then stops. In continuous-coordinate mode (CTC = ‘1’, COO = ‘1’), the WM9713L
continuously repeats a sequence consisting of an X-co-ordinate,Y co-ordinate, then an additional
measurement determined by ADCSEL[7:1]. At least one of the ADCSEL bits must be set in
continuous coordinate mode when CTC = COO = 1). Should more than one of the ADCSEL[7:1] bits
be set during continuous co-ordinate mode then the additional measurement alternates for every set
of three measurements. For example if ADCSEL_AUX1 and ADCSEL_AUX3 were both selected
whilst CTC = ‘1’, COO = ‘1’ then the following sequence of conversions would be performed:
“X,Y,AUX1,X,Y,AUX3,X,Y,AUX1,X,Y,AUX3…”
If operating in continuous mode (CTC=1), then more than one ADCSEL[7:1] bit may be set and
74h
REGISTER
ADDRESS
conversions
7
6
5
4
3
2
1
0
BIT
ADCSEL_AUX4
ADCSEL_AUX3
ADCSEL_AUX2
ADCSEL_AUX1
ADCSEL_PRESSURE
ADCSEL_Y
ADCSEL_X
COO
will
LABEL
be
performed
0
0
0
0
0
0
0
0
DEFAULT
The type of measurement is specified by the
cyclically
AUX4 Measurement Enable Control
0 = Disable AUX4 measurement (pin 12)
1 = Enable AUX4 measurement (pin 12)
AUX3 Measurement Enable Control
0 = Disable AUX3 measurement
(SPKVDD/3)
1 = Enable AUX3 measurement
(SPKVDD/3)
AUX2 Measurement Enable Control
0 = Disable AUX2 measurement (pin 30)
1 = Enable AUX2 measurement (pin 30)
AUX1 Measurement Enable Control
0 = Disable AUX1 measurement (pin 29)
1 = Enable AUX1 measurement (pin 29)
Pressure Measurement Enable Control
0 = Disable pressure measurement
1 = Enable pressure measurement
Y Co-ordinate Measurement Enable
Control
0 = Disable Y co-ordinate measurement
1 = Enable Y co-ordinate measurement
X Co-ordinate Measurement Enable
Control
0 = Disable X co-ordinate measurement
1 = Enable X co-ordinate measurement
Co-ordinate Mode Control
0 = Single measurement
1 = Co-ordinate measurement
in
the
PP Rev 3.2 September 2008
DESCRIPTION
following
Pre-Production
order
=>
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