Nordic Semiconductor nRF5340 - Audio Codec

Hardware description
I/O Label Description
P1.02 SDA Data signal for current-shunt monitor devices
P1.03 SCL Clock signal for current-shunt monitor devices
P1.04 UART1_RXD Data input signal of serial port 1
P1.05 UART1_TXD Data output signal of serial port 1
P1.06 UART1_CTS/MIC_DOUT Clear to send signal of serial port 1 / Optional
connection to DOUT signal of digital microphone
P1.07 UART1_RTS Request to Send signal of serial port 1
P1.08 UART2_RXD Data input signal of serial port 2
P1.09 UART2_TXD Data output signal of serial port 2
P1.10 UART2_CTS Clear to send signal of serial port 2
P1.11 UART2_RTS Request to send signal of serial port 2
P1.12 D10 Routed to connector P4
P1.13 D9 Routed to connector P4
P1.14 D5 Routed to connector P3
P1.15 CURR_MON_ALERT Alert signal from current-shunt monitor devices
Table 1: nRF5340 SoC pin map
3.5 Audio codec
Schematic drawing for the nRF5340 Audio DK codec.
SCL
SDA
I2C
HW_CODEC_AUX_I2C
MISO
MOSI
SCK
CS
SPI
I2S
SPI
CTRL
HW_CODEC
HW_CODEC_IF
SPI1_SS
H8
ASP2_FSYNC/GPIO8
K6
MICBIAS1B
B6
MICBIAS1A
D6
SPI2_MISO/I2C2_SCL/GPIO11
J1
IN1RN
B4
OUTP
A9
MICBIAS1C
A7
OUTN
B8
IN2LN
D2
IN2RN
A3
IN1LP_1
D4
IN2_PDMDATA
A1
SPI1_SCK
H10
SPI1_MISO/I2C1_SCL
G11
ASP2_DOUT/GPIO5
J5
IRQ
F10
SPI2_MOSI/I2C2_SDA/GPIO12
H4
ASP2_BCLK/GPIO7
K2
MCLK2
L5
ASP1_DOUT/GPIO1
J7
MCLK1
L9
ASP1_DIN/GPIO2
J9
ASP1_BCLK/GPIO3
K10
IN1LN_2
E3
IN2LP
C3
IN1LN_1
C5
IN1_PDMDATA
E1
SPI2_SCK/GPIO10
H2
SPI2_SS/GPIO9
G3
IN1_PDMCLK
F4
ASP2_DIN/GPIO6
J3
IN2_PDMCLK
C1
ASP1_FSYNC/GPIO4
J11
IN2RP
B2
IN1RP
A5
IN1LP_2
E5
RESET
F8
SPI1_MOSI/I2C1_SDA
G9
U2A
CS47L63
VREF2_FILT
C11
NC
E11
GND_A
B10
GND_D
F2
VDD_A
A11
VDD_D
G1
NC
L1
NC
H6
GND_D
K8
VDD_D
L7
NC
L11
VDD_IO
L3
LDO_FILT
C7
GND_A
C9
VDD_LDO
D10
GND_D
K4
VREF1_FILT
D8
GND_SUB
E7
NC
E9
NC
F6
NC
G5
NC
G7
U2B
CS47L63
C30
1.0µF
C29
1.0µF
C32
1.0µF
C33
100nF
C28
2.2µF
C31
10µF
BCLK
DIN
DOUT
FSYNC
MCLK
I2S
GPIO
IRQ
RESET
CTRL
C22
100nF
R7
22R
C24
1.0µF
C25
1.0µF
C27
1.8nF
C26
1.8nF
HW_CODEC_PDM1
HW_CODEC_PDM2
R8
100R
R10
100R
R12
100k
R11
100k
HW_CODEC_AUX_I2S
HW_CODEC_LED
VDD_HW_CODEC_1V2
VDD_HW_CODEC_1V8
BCLK
DIN
DOUT
FSYNC
MCLK
I2S
CLOCK
DATA
POWER
PDM
CLOCK
DATA
POWER
PDM
SB11
TP48
LEFT
RIGHT
GND
LINE
R6
22R
C23
100nF
SB10SB9
OUTP
OUTN
HEADPHONE
TP41
TP42
TP43
TP44
TP46
TP47
TP49
TP50
TP51
TP52
TP45
SB15
SB16
VDD_HW_CODEC_1V2
VDD_HW_CODEC_1V8
R9
100k
VDD_HW_CODEC_1V8
TP7
TP1
TP2
TP3
TP4
TP5
TP6
TP54
TP55
TP53SB12
SB13
SB14
TP8
HEADPHONE
LINE_IN
Figure 7: nRF5340 Audio DK codec
4406_708
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