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PAU1800 is a family of patented GreenRadioTM monolithic Bluetooth audio System-on-Chips (SoCs) mainly for wireless- ^ J+ O" O! v$ `* u2 [
audio/voice applications. It comprises 2 CPU and 2 DSP processors, a Bluetooth 5.2 EDR/LE dual mode radio, a stereo% n! u, V; ~2 X. G5 b I
audio codec, a battery charger, memory, and host interface peripherals. PAU1800 series features low power digital active
$ v5 d# A& }" _: t* I9 W& W' Nnoise cancellation (ANC) technology integrated in the SoC.
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Full compliance with Bluetooth v5.2 EDR/BLE dual+ L7 v" H" B' K+ X+ a A* G+ x$ e
mode specification3 Q1 y: a2 P6 L9 d
 Embedded 32-bit CPU as System Processor (SP)+ U6 H# y+ u- f& ~* ^* t# ?
 Embedded RISC-V CPU with floating point and: I! `+ S& ^9 K+ ~, t! ]' l
DSP/SIMD extension as Application Processor (AP)& [: |3 T$ s+ y4 |
 Two 24-bit Audio DSP coprocessors
# i F: ?8 I4 @! g8 Y Internal System in Package (SiP) flash memory
: W! w7 L, [% s( n$ I; ? Stereo audio DAC/ADC and headphone drivers* w3 t4 Y. f9 D
 Up to 3 microphone inputs (2 analog and 1 digital
& {* r2 z* R' \! i5 i9 bMEMS)
/ J! s4 s: S q) Q( r Embedded Bluetooth SBC/A2DP and wideband1 c1 N+ A8 k9 K2 o: h* e
speech mSBC codec7 X( W0 f. k8 C# I
 Support AAC/G.722 decoder
, N$ J) N. o* A( o Y+ O Multipoint support for two A2DP simultaneous
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 Feedforward/Hybrid Active Noise Cancellation* m* k; n a( J( d4 c' v
 Serial Interfaces: UART, I2C and SPI
b- ?' `9 n5 G& w+ Y2 l3 Z Digital Audio interfaces: PCM/I2S0 u) O' Y4 n1 f& O" ]% d( _
 No external load capacitors are required for typical
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! D3 h2 \# b( c1 q g* n) H! Q/ k Integrated configurable switch-mode regulators and I2 _ Z! S: I& n" k( u% ]
linear regulators% I0 w$ h4 A1 |( a
 Integrated Lithium-ion battery charger and battery
$ J2 M$ t8 ~2 @9 C! {voltage monitor
. C% [8 t6 _# e% P. ]& H" m& M4 g Hardware PWM dimming LED drivers
2 L" i, y- ]) ]3 H; `+ [ Support over the air (OTA) firmware code update
2 |, Y& `1 J$ ~! G: v; p Support unique device/manufacturing ID for
. V, [/ Z4 z5 A$ d) hcustomer’s code protection, s5 ^# {4 J C2 h
 Ultra-low current for deep hibernation mode) V* b5 x8 n- z1 `+ C z* i" L
 2-way power-line charger box communication (CBC)
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