Installation Instructions

SIM5216A _HD_V1.02 Hardware Design
SIM5216A _HD_V1.02 26.08.2010
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It is suggested that you adopt one of two following reference circuits in order to get well speaker
effect. The different audio signals have to be routed according to different signal layout rules as
in following figures:
3.8.1 Speaker interface configuration
Figure 15: Speaker interface configuration
Because SPK_P and SPK_N are outputs of Class-D audio amplifier, optional EMI filtering is
shown at Figure 15; these components (two ferrite beads and two capacitors) can be added to
reduce electromagnetic interference. If used, they should be located near the SPK_P and SPK_N.
Considerable current flows between the audio output pins and the speaker, so wide PCB traces are
recommended (~ 20 mils).
Audio channel Pin name Pin No Function
MIC_P 43 MIC anode input
MIC_N 44 MIC cathode input
EAR_P 25 Receiver output anode
NORMAL
( default )
EAR_N 26 Receiver output cathode
HP_MICP 42 Headset MIC anode input
HPR 27 Headset right speaker
HEADSET
HPL 28 Headset left speaker
MIC_P 43 MIC anode input
MIC_N 44 MIC cathode input
SPK_P 23 Loudspeaker anode
Hand free
SPK_N 24 Loudspeaker cathode