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PAU1800 is a family of patented GreenRadioTM monolithic Bluetooth audio System-on-Chips (SoCs) mainly for wireless4 L( O, \# L* ^) g1 q
audio/voice applications. It comprises 2 CPU and 2 DSP processors, a Bluetooth 5.2 EDR/LE dual mode radio, a stereo
% O4 `8 o' g5 Q/ Z0 baudio codec, a battery charger, memory, and host interface peripherals. PAU1800 series features low power digital active
$ n7 r5 i( u& g5 j' E7 b: Dnoise cancellation (ANC) technology integrated in the SoC." ]+ R; ~6 Q* [
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Full compliance with Bluetooth v5.2 EDR/BLE dual
8 X8 E5 ~+ K, z0 Smode specification
$ f$ h- W8 C- f Embedded 32-bit CPU as System Processor (SP)% P" L( m! g, w
 Embedded RISC-V CPU with floating point and7 U7 h0 i8 M1 z- L( x# [6 U1 b
DSP/SIMD extension as Application Processor (AP)
9 a9 y# P4 |1 |+ J Two 24-bit Audio DSP coprocessors+ I$ q; d: s' {0 k" U- q
 Internal System in Package (SiP) flash memory8 ~# x, k& V' w! S: N1 r
 Stereo audio DAC/ADC and headphone drivers
, l: q3 e( C2 X1 u+ R( F2 R3 S5 u Up to 3 microphone inputs (2 analog and 1 digital
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7 ~0 w! M$ O. `7 g Embedded Bluetooth SBC/A2DP and wideband
3 L: J+ h% ~$ L; A: |speech mSBC codec
. e0 o3 G0 k1 r Support AAC/G.722 decoder- t5 P' d/ z% j7 l6 @" d
 Multipoint support for two A2DP simultaneous
0 _3 w2 Z# @9 K% S, vconnections
8 d, y' b4 F4 D! D6 A: M' r3 L Feedforward/Hybrid Active Noise Cancellation
3 [ d1 b: j6 N; [+ V Serial Interfaces: UART, I2C and SPI7 U% [) D; x8 D: e% y
 Digital Audio interfaces: PCM/I2S8 D ?$ R( Y1 [" z( n+ ^3 q% h9 D
 No external load capacitors are required for typical
- b3 ?* N! o1 T0 D% [crystal) c! _; e/ M( W1 x3 M
 Integrated configurable switch-mode regulators and
" [' R w8 G& E* ~6 {5 q k( {linear regulators
& m3 j& o( w4 J9 P2 _. B2 L6 }# ~; o Integrated Lithium-ion battery charger and battery$ Q& Q& a" ]' ~% C3 M
voltage monitor
( E" C3 [, x/ Q: S# V6 } Hardware PWM dimming LED drivers4 _1 k# {9 |6 \% |& r. y5 j, h$ H' E
 Support over the air (OTA) firmware code update0 ?+ Y0 h/ x7 f
 Support unique device/manufacturing ID for; Y! A' |, m; Z# ]
customer’s code protection, g0 H9 S, S. W) c, G5 q
 Ultra-low current for deep hibernation mode
% l% f. e$ x" o# Y 2-way power-line charger box communication (CBC)
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