Design Notice
Design Notice –
– Audio (6/9)
Audio (6/9)
●
Audio Jack :
▪
An extra interrupt pin of audio jack for the earpiece detection can
get better THD+N (from 71dB to 76dB)
●
Audio Jack :
●
Step 1 :
Not plug-in
earphone (Audio Jack pin 3-5 connected)
EINT1
pull low
through Audio Jack (pin 3-5 connection) to R317 to GND.
●
Step 2 :
Plug-in
earphone (Audio Jack pin 3-5 dis-connected)
EINT 1
pull high
.
C63
100p
R71
100
C53
47u
MP3_OUTL
2
XMP3_L
HEADSET EarPhone
C56
47u
C64
33p
R72
100
C65
33p
MP3_OUTR
2
XMP3_R
p
R73
1K
p
EINT_HEADSET
2
●
connect EINT to MP3 OUT for cost effective solution
●
connect EINT to MP3_OUT for cost effective solution
●
connect to L channel to avoid POP noise when use internal
SPK Amp
Copyright © MediaTek Inc. All rights reserved
64
Summary of Contents for MT6252
Page 2: ...Baseband design notice Baseband design notice Copyright MediaTek Inc All rights reserved ...
Page 13: ...Memory design notice Memory design notice Copyright MediaTek Inc All rights reserved ...
Page 39: ...Design Notice Pulse Charging Pulse Charging Copyright MediaTek Inc All rights reserved ...
Page 59: ...Design Notice Audio Copyright MediaTek Inc All rights reserved ...
Page 107: ...MT6252 LCM Design Notice Copyright MediaTek Inc All rights reserved ...
Page 116: ...MT6252 RF Design Note MT6252 RF Design Note Copyright MediaTek Inc All rights reserved ...
Page 118: ...Reference Design Reference Design Copyright MediaTek Inc All rights reserved ...
Page 120: ...META Tools META Tools Copyright MediaTek Inc All rights reserved ...
Page 124: ...Key RF Components Key RF Components Copyright MediaTek Inc All rights reserved ...
Page 130: ...MT6252 Reference Phone MT6252 Reference Phone Copyright MediaTek Inc All rights reserved ...
Page 132: ...TRx TRx TRx TRx 2008 06 Copyright MediaTek Inc All rights reserved 131 ...
Page 134: ...RX matching RX matching 2008 06 Copyright MediaTek Inc All rights reserved 133 ...
Page 136: ...Layout Rule Layout Rule 2008 06 Copyright MediaTek Inc All rights reserved 135 ...
Page 140: ...7 Keep RF trace as 50Ω 2008 06 Copyright MediaTek Inc All rights reserved 139 ...