User's Manual

Pins Configurations
PIN
NAME TYPE FUNCTION
1
GND GND Ground
2
MIC-AP Analogue Microphone A positive input
3
MIC-AN Analogue Microphone A negative input
4
SPK-LN Analogue Differential negative left speaker output
5
SPK-LP Analogue Differential positive left speaker output
6
SPK-RN Analogue Differential negative right speaker output
7
SPK-RP Analogue Differential positive right speaker output
8
PIO(13)
Bi-directional Programmable Input/Output line
9 VDD Power
3.3V Power Supply Input
10
MIC-BP Analogue Microphone B positive input
11
MIC-BN Analogue Microphone B negative input
12 GND GND Ground
13
PIO(14)
Bi-directional Programmable Input/Output line
14 PIO(9) Bi-directional Programmable Input/Output line
15 PIO(4) Bi-directional Programmable Input/Output line
16 GND GND Ground
17
UART_TX CMOS Input UART Data Output
18 UART_RX CMOS Input UART Data Input
19
AIO(1) Bi-directional Programmable Input/Output Line or Analogue input
20 LED(0) Open Drain LED driver
21
LED(1) Open Drain LED driver
22 GND GND Ground
23 RESETB CMOS input Reset if low. Input debounced so must be low for >5ms to cause a reset
24 SPI_CLK CMOS Input Serial Peripheral Interface Clock
25 SPI_MISO CMOS Output Serial Peripheral Interface Data Output
26 SPI_MOSI CMOS Input Serial Peripheral Interface Data Input
27 SPI_CSB CMOS Input Chip Select For Synchronous Serial Interface active low
28 PIO(12)
Bi-directional Programmable Input/Output line
29 PIO(11)
Bi-directional Programmable Input/Output line
30
PIO(5) Bi-directional Programmable Input/Output line
31
PIO(3) Bi-directional Programmable Input/Output Line
32
PIO(2) Bi-directional Programmable Input/Output line
33 PIO(0)
Bi-directional Programmable Input/Output line
34 PIO(1)
Bi-directional Programmable Input/Output line
35 NC No connect
36
GND GND Ground
37 MIC_BIAS Analogue Microphone bias
38
AIO(0) Bi-directional Programmable Input/Output Line or or Analogue input