wm9713 Wolfson Microelectronics plc, wm9713 Datasheet - Page 126
wm9713
Manufacturer Part Number
wm9713
Description
Ac?97 Audio + Touchpanel Codec
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM9713.pdf
(132 pages)
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WM9713L
COMBINED HEADSET / BTL EAR SPEAKER
COMBINED HEADSET / SINGLE-ENDED EAR SPEAKER
w
In smartphone applications with a loudspeaker and separate ear speaker (receiver), a BTL ear
speaker can be connected at the OUT3 pin, as shown below.
Figure 41 Combined Headset / BTL Ear Speaker
The ear speaker and the headset play the same signal. Whenever the headset is plugged in, the
headphone outputs are enabled and OUT3 disabled. When the headset is not plugged in, OUT3 is
enabled (see “Jack Insertion and Auto-Switching”)
Instead of a BTL ear speaker, a single-ended ear speaker can also be used, as shown below.
Figure 42 Combined Headset / Single-ended Ear Speaker
PP Rev 3.2 September 2008
Pre-Production
126
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