| D6 |
AVDD1 |
Analog High Supply. This is the input supply for the high voltage analog, the amplifier high-swing class-D mode, and the analog 1.6V linear regulator. The device transitions to hardware shutdown, and all registers are reset to their PoR values when this drops below its UVLO threshold. Bypass to GND with at least a 1µF capacitor. |
— |
Power |
| F5 |
AVDD2 |
Analog Low Supply. This is the input supply for low voltage analog and the amplifier in class-AB mode. The device transitions to hardware shutdown, and all registers are reset to their PoR values when this drops below its UVLO threshold. This can be connected directly to AVDD3, and both supplies share a single bypass capacitor to DGND of at least 1µF. If not connected to AVDD3, then bypass it separately to GND. |
— |
Power |
| E5 |
AVDD3 |
Amplifier Low Supply. This is the amplifier low power class-D mode supply. The device transitions to hardware shutdown, and all registers are reset to their PoR values when this drops below its UVLO threshold. This can be connected directly to AVDD2, and both supplies share a single bypass capacitor to DGND of at least 1µF. If not connected to AVDD2, then bypass it separately to DGND. |
— |
Power |
| F2 |
DVDD |
Digital Core Input Power Supply. The device transitions to hardware shutdown, and all registers are reset to their PoR values when this drops below its UVLO threshold. Bypass to DGND with at least a 1µF capacitor. |
— |
Power |
| F3 |
DVDDIO |
Digital Interface Logic Level Power Supply. Selects the reference logic voltage level for the PCM and I2C digital interfaces. Bypass to DGND with at least a 0.1µF capacitor. |
— |
Power |
| A6 |
MBVDD |
Microphone Bias Input Supply. Provides the input to the microphone bias linear regulator. Connect to a supply exceeding the minimum dropout voltage for the selected output microphone bias level. Can be directly connected to a single cell battery. Connect to GND or leave unconnected if the microphone bias is not used (always disabled). If microphone bias is used, bypass to GND with a 1µF capacitor. |
— |
Power |
| C6 |
AVDD1_REG |
Analog High Supply Linear Regulator Output. This is the output of the analog 1.6V linear regulator. Bypass to GND with a 1µF capacitor. This should never be connected to an external load. |
AVDD1 |
Power |
| D5 |
MICBIAS1 |
Direct Microphone Bias Output 1 and Bypass Connection. Whenever microphone bias is enabled, this output always provides the selected microphone bias output voltage (cannot be gated). Leave unconnected if microphone bias is never enabled, otherwise always bypass to GND with a 2.2µF capacitor. |
MBVDD |
|
| D4 |
MICBIAS2 |
Gated Microphone Bias Output 2. This output provides the selected microphone bias output voltage when both microphone bias is enabled and this output is enabled. Leave unconnected if this microphone bias output is never enabled, otherwise bypass to GND with at least a 0.1µF capacitor (may be shared if the analog microphone requires bypass as well). |
MBVDD |
|
| E4 |
MICBIAS3 |
Gated Microphone Bias Output 3. This output provides the selected microphone bias output voltage when both microphone bias is enabled and this output is enabled. Leave unconnected if this microphone bias output is never enabled, otherwise bypass to GND with at least a 0.1µF capacitor (may be shared if the analog microphone requires bypass as well). |
MBVDD |
|
| B6 |
GND |
Device Quiet Ground. Ground reference for all sensitive and core analog blocks. |
— |
Power |
| F4 |
DGND |
Device Digital Ground. Ground reference for the amplifier class-D switching stage, the digital interfaces, and the digital core. |
— |
Power |
| E1 |
SCL |
I2C-Compatible Serial-Clock Input. For the full signal swing, connect an external pullup resistor (typically 1.5kΩ for FM+ clock rate support) to DVDDIO. |
DVDDIO |
|
| F1 |
SDA |
I2C-Compatible Serial-Data Input/Output. For the full signal swing, connect an external pullup resistor (typically 1.5kΩ for FM+ clock rate support) to DVDDIO. |
DVDDIO |
|
| D2 |
IRQ |
Hardware Interrupt Output. For the full signal swing in open-drain mode, connect an external pullup resistor (typically at least 1.5kΩ) to DVDDIO. A software enabled internal 100kΩ pullup resistor is also available. A pullup resistor is not needed in push-pull mode. |
DVDDIO |
|
| E2 |
ADDR |
Serial Interface Address Select. This connection selects from four possible I2C slave addresses. |
DVDDIO |
|
| E3 |
HW_EN |
Device Hardware Enable Input. When pulled low, the device is placed into and held in hardware shutdown. When pulled high to DVDDIO, the device can exit hardware shutdown if all supplies are above their UVLO thresholds. |
DVDDIO |
|
| D1 |
BCLK |
PCM Bit Clock Input. Internally pulled down to DGND (RPD). |
DVDDIO |
|
| C1 |
LRCLK |
PCM Frame Clock Input. Internally pulled down to DGND (RPD). |
DVDDIO |
|
| B1 |
DIN |
PCM Data Input. Internally pulled down to DGND (RPD). |
DVDDIO |
|
| A1 |
DOUT |
PCM Data Output Bus. Internally pulled down to DGND (RPD) when disabled. |
DVDDIO |
|
| E6 |
OUTP |
Headphone Amplifier Positive Output
|
AVDD1 |
|
| F6 |
OUTN |
Headphone Amplifier Negative Output
|
AVDD1 |
|
| C4 |
INP1 |
Analog Microphone 1 Positive Input
|
AVDD1_REG |
|
| C5 |
INN1 |
Analog Microphone 1 Negative Input
|
AVDD1_REG |
|
| B4 |
INP2 |
Analog Microphone 2 Positive Input
|
AVDD1_REG |
|
| B5 |
INN2 |
Analog Microphone 2 Negative Input
|
AVDD1_REG |
|
| A4 |
INP3 |
Analog Microphone 3 Positive Input
|
AVDD1_REG |
|
| A5 |
INN3 |
Analog Microphone 3 Negative Input
|
AVDD1_REG |
|
| C3 |
DMC1 |
Digital Microphone Interface 1 Clock Output
|
DVDDIO |
|
| C2 |
DMD1 |
Digital Microphone Interface 1 Data Input
|
DVDDIO |
|
| B3 |
DMC2 |
Digital Microphone Interface 2 Clock Output
|
DVDDIO |
|
| B2 |
DMD2 |
Digital Microphone Interface 2 Data Input
|
DVDDIO |
|
| A3 |
DMC3 |
Digital Microphone Interface 3 Clock Output
|
DVDDIO |
|
| A2 |
DMD3 |
Digital Microphone Interface 3 Data Input
|
DVDDIO |
|
| D3 |
I.C. |
Internally Connected. Not used for normal device operation. Connect to GND externally. |
— |
Power |
