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PAU1800 is a family of patented GreenRadioTM monolithic Bluetooth audio System-on-Chips (SoCs) mainly for wireless+ c! o+ U$ Q! k a
audio/voice applications. It comprises 2 CPU and 2 DSP processors, a Bluetooth 5.2 EDR/LE dual mode radio, a stereo4 U: `( O. B- Z( }! @
audio codec, a battery charger, memory, and host interface peripherals. PAU1800 series features low power digital active; y9 i) \- n9 M- A+ \
noise cancellation (ANC) technology integrated in the SoC.; \! m; N9 M0 K! [2 P1 o) M4 z; l
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Full compliance with Bluetooth v5.2 EDR/BLE dual
4 n" R- p5 D, z) ]6 L6 r. ]3 vmode specification* g* u4 x g1 v, }5 F) W2 o
 Embedded 32-bit CPU as System Processor (SP)4 [/ k; w8 K0 X1 f0 `, D' Q% @
 Embedded RISC-V CPU with floating point and) H, G) F+ K3 ?+ r
DSP/SIMD extension as Application Processor (AP)+ X, D2 x) H. Q& h/ ^
 Two 24-bit Audio DSP coprocessors; o. J8 d& Q9 p0 R% f
 Internal System in Package (SiP) flash memory
* v p% h# O8 l% u, i Stereo audio DAC/ADC and headphone drivers3 d3 C# ^+ [ ~* W4 b
 Up to 3 microphone inputs (2 analog and 1 digital
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 Embedded Bluetooth SBC/A2DP and wideband$ p$ H! c' _3 O6 _
speech mSBC codec8 a# x- @2 X+ s9 A$ n' n
 Support AAC/G.722 decoder* K6 a. m! a3 P5 P* V
 Multipoint support for two A2DP simultaneous: h' m1 c& k- k }+ o: Z
connections
) L5 ` J1 {& {& J% n7 y Feedforward/Hybrid Active Noise Cancellation
% a! T* q3 o5 [+ |6 [ Serial Interfaces: UART, I2C and SPI
) Z2 D' I/ F, z( q9 T/ O. Z; p7 U4 p& E Digital Audio interfaces: PCM/I2S
, Y1 C% F0 O* k" U$ I No external load capacitors are required for typical9 H% F5 V( p. m X; f) \
crystal. f* q1 W0 V1 W' P
 Integrated configurable switch-mode regulators and! e" N) E! k$ x3 j2 b5 f
linear regulators6 @) H5 i: d) @7 e1 m$ g5 I
 Integrated Lithium-ion battery charger and battery5 {3 c2 _! ?: j0 C, i
voltage monitor: s6 i; I4 I9 y
 Hardware PWM dimming LED drivers! r9 _ f N9 y, s0 ]
 Support over the air (OTA) firmware code update
1 `5 q/ y* l9 H' b9 T1 _ Support unique device/manufacturing ID for2 Q: I2 C- ]# s2 P7 J2 ]
customer’s code protection3 i9 I% F( Y# D( p; b
 Ultra-low current for deep hibernation mode: o/ O+ z) L/ E/ w" R% M
 2-way power-line charger box communication (CBC)
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