BU7861KN_10 Datasheet, PDF (9/14 Pages) Rohm – Mixer & Selector IC with PCM CODEC and 16bit D/A Converter

BU7861KN
●Recommended circuits
Technical Note
CPU
+
+
+
+
MICB_1
MICB_2
MICO
MIC_BIAS _{MIC BIAS}
MICIN_C
MICIN_1
+-
MICIN_2 _{MIC_SEL}
MIC_MT
EXTIN
EXTIN_MT
RX_TEST1
CPU I/F
-
+
VREF/COMMON
16step
TX_VOL
+6～-8dB
Tx_testline
VDD/VSS
SMUTE
POP
TX_TEST1
A/D
BPF
DSPCLK
DSPIN
DSPOUT
CPU
EXTOUT
Rx_testline
DSP
I/F
8step
EXTOUT
TX_TEST2
ST_VOL
ST_MT
-18～-42dB
REC_MT ^32step
Gain=3.2dB
RECN
-+
RX_VOL
-+
0～-30dB
REC_TST
32Ω
D/A
VIC_MT
RX_TEST2
32step
+6～-54dB
LPF
PLL
PLLLPF
0.01µ
MEL_VOL
FSYNC
RECP
-+
MEL_MT
Gain=3.2dB
SPVIC_MT ^16step
DTMF/
TONE
-
TONE_MT
+
SPOUT
8Ω
SP amp
32step
SPRX_VOL
0～-30dB
+6～-8dB
-+
SPMEL_MT
SPMEL_VOL
16step
0～-28dB
HPR_TST
SOUND_MT
AIN_R
Sound
AIN_MT
AIN_VOL
AIN_L
Source
IC
HPL_TST
HSJL_MT
HP_LI
32step
0～-45dB
16Ω
+
100µ ^HP_L
-+
16Ω
+ ^HP_R
-+
100µ
-+
HP2_VOL
8step HPL_MT
+14～0dB
HSJR_MT
HP_VOL
-+
HP2_VOL
HP_RI
8step HPR_MT
+14～0dB
-+
DIG_MT
-+
SYSCLK
SDI
LRCLK
DSP
BCLK
TEST
CSTEP
Fig.17 Recommended Circuit
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9/13
2010.09 - Rev.A