User's Guide

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11 GND - - Ground
12 LED0 O Open-drain output LED Driver
13 LED1 O Open-drain output LED Driver
14 LED2 O Open-drain output LED Driver
15 GND - - Ground
16 VREG_EN I Input with internal pull-down
Regulator enable. A high input enables the on-chip
regulators, which can then be latched on internally.
17 RESET# I Input with strong pull-up Reset if low. Pull low for minimum 5 ms to cause a reset
18 GND - - Ground
19 VDD_3V3 I VDD
Positive supply for Module
- Supply voltage : Typical 3.3V.
20 GND - - Ground
21 GPIO_1 I/O Bidirectional with strong pull-up Programmable input/output line1
22 GPIO_0 I/O Bidirectional with strong pull-up Programmable input/output line0
23 USB_DN I/O Bidirectional USB data minus
24 USB_DP I/O Bidirectional USB data plus with selectable internal 1.5K pull-up resistor
25 GND - - Ground
26 GPIO_9 I/O Bidirectional with strong pull-down Programmable input/output line9
27 GPIO_8 I/O Bidirectional with strong pull-up Programmable input/output line8
28 GPIO_7 I/O Bidirectional with strong pull-down Programmable input/output line7
29 GPIO_6 I/O Bidirectional with strong pull-down Programmable input/output line6
30 GND - - Ground
31 MIC_BIAS O Analog out Microphone bias
32 LINE_BN I Analog in Line input negative, channel B
33 LINE_BP I Analog in Line input positive, channel B
34 MIC_AN I Analog in Line or microphone input negative, channel A
35 MIC_AP I Analog in Line or microphone input positive, channel A
36 GND - - Ground
37 SPK_RN O Analog out Speaker output negative, right
38 SPK_RP O Analog out Speaker output positive, righ
39 SPK_LN O Analog out Speaker output negative, left
40 SPK_LP O Analog out Speaker output positive, left