ISD94100 Series Technical Reference Manual
Sep 9, 2019
Page
923
of 928
Rev1.09
IS
D
9
410
0
S
ER
IE
S
T
E
C
HN
ICA
L
RE
F
E
RE
NCE
M
AN
U
AL
8
APPLICATION CIRCUIT
USB Slot
VCC
Power
I94100
Series
LDO
RS 232 Transceiver
ROUT
TIN
RIN
TOUT
PC COM Port
UART
RXD
TXD
VCC
10uF/10V
10K
nRESET
I2C_SDA
I2C_SCL
4.7K
4.7K
VCC
ICE_CLK
ICE_DAT
SWD
Interface
LDO_CAP
1uF
Reset
Circuit
SPI Device
SPI_SS
SPI_CLK
SPI_MISO
SPI_MOSI
USB_D-
USB_D+
USB_VBUS
1uF
0.1uF
1uF
0.1uF
I2S_DI
I2S_BCLK
I2S_DO
I2S_LRCK
I2S_MCLK
VCC
DPWM_LP
DPWM_LN
DPWM_RP
DPWM_RN
FS
BCLK
DO
DI
MCLKI
LP
LN
RP
RN
Audio
Amplifier
IP
IN
DPWM_SP
DPWM_SN
C Device
I
2
CLK
DIO
CS
CLK
MISO
MOSI
Digital
Microphone
VCC
CLK
DAT
L/R
CLK
DAT
L/R
CLK
DAT
L/R
CLK
DAT
L/R
DMIC_CLK0
DMIC_DAT0
DMIC_CLK1
DMIC_DAT1
AV
DD
AV
SS
V
DD
V
SS
V
DD
V
SS
Crystal
4~24.576
MHz
crystal
20p
20p
XT1_OUT
XT1_IN
32.768 kHz
crystal
20p
20p
X32_OUT
X32_IN
EADC0_CH[12:0]
SAR ADC
PWM0_CH[5:0]
PWM
Voltage
Measurement
Audio Power Stage
Audio Power Stage
Audio Codec
S Device
I
2