ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 468 -
Revision 2.4
8
APPLICATION DIAGRAM
MIC+
MIC-
VSSD
VCCD
VCCD
0.1
uF
47
uF
VCCD
19
24
21
VSSSPK
VCCSPKR
VCCSPKL
60
62
: Digital ground;
: Analog ground;
4.7uF
Ω
2.2 K
0.1uF
2.2 K
Ω
0.1uF
MIC
SPK+
SPK-
20
23
4
VSSA
VCCA
0.1
uF
47
uF
VCCA
58
CSB
DO
WPB
GND
VCC
HOLDB
CLK
DIO
W25Q
PA.4/SPI0_MISO0
PA.3/SPI0_SSB0
PA.2/SPI0_SCLK0
PA.1/SPI0_MOSI0
11
10
9
8
41
15
0.1
uF
47
uF
ISD91260
LQFP64
XI32K
XO32K 31
30
20pF
20pF
32.768K
64
MICBIAS
4.7uF
VMID
59
VREG
39
1uF
6 VDDB
5 VDDBS
1uF
0.1uF
VSSSPK 22
DMIC_CLK
DMIC_DAT
0.1uF
VDD
DMIC
Note:
1. For SPI flash quad mode access, disconnect HOLDB & WPB from VDDB, and then connect HOLDB
to PA.0 and WPB to PA.5.
2. Cannot use AMIC and DMIC at the same time, only one can be used. DMIC_CLK and DMIC_DAT
can be set with different GPIO share pins.
3. DMIC operating voltage may be different as I91200 series. Customer have to care the voltage and
data high/low level for I91200 recognition.