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PAU1800 is a family of patented GreenRadioTM monolithic Bluetooth audio System-on-Chips (SoCs) mainly for wireless8 X. T" c9 T; y' `9 ]' i
audio/voice applications. It comprises 2 CPU and 2 DSP processors, a Bluetooth 5.2 EDR/LE dual mode radio, a stereo; `. t, m; O k6 }+ X' j6 N
audio codec, a battery charger, memory, and host interface peripherals. PAU1800 series features low power digital active' _3 j! x6 d% x
noise cancellation (ANC) technology integrated in the SoC.
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+ Q+ L* N) W, k B9 N) b/ W% L, YFull compliance with Bluetooth v5.2 EDR/BLE dual
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 Embedded 32-bit CPU as System Processor (SP)
. T& }" O) O2 k Embedded RISC-V CPU with floating point and# p- _- v% ^4 n2 r1 e) P, y- }
DSP/SIMD extension as Application Processor (AP)
. v( j$ m. v1 c Two 24-bit Audio DSP coprocessors( w4 _7 E' W! R# W; \: M
 Internal System in Package (SiP) flash memory
- Z, r+ D: M4 [ Stereo audio DAC/ADC and headphone drivers' P6 t6 ]7 _8 e' X7 B, B% ]! k& ^
 Up to 3 microphone inputs (2 analog and 1 digital
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 Embedded Bluetooth SBC/A2DP and wideband
$ s3 J5 I4 g/ w# Y& p. }2 \* Rspeech mSBC codec
" O, N( o/ _0 Y% J& `( o Support AAC/G.722 decoder# n4 o0 P- {# A, u- A/ }, ?
 Multipoint support for two A2DP simultaneous
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 Feedforward/Hybrid Active Noise Cancellation) Q, U# H) c9 ?. ]: ?
 Serial Interfaces: UART, I2C and SPI3 `9 H7 H$ I: Q: }7 I
 Digital Audio interfaces: PCM/I2S. C! @$ h4 Q0 F
 No external load capacitors are required for typical
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 Integrated configurable switch-mode regulators and5 k: W; r8 b z1 A) m
linear regulators
0 C( s2 T' ~4 N' U' h Integrated Lithium-ion battery charger and battery
. O( l; j! s5 w" o4 A7 [4 M1 c, S! Bvoltage monitor ?" q( U& E. ]6 a" Z5 K* Z
 Hardware PWM dimming LED drivers3 a+ x8 H, x* u' C5 J
 Support over the air (OTA) firmware code update
/ x8 I0 ~1 M% o9 V: v' q4 u Support unique device/manufacturing ID for9 M0 [2 }2 f0 U
customer’s code protection
0 G' Q3 I5 u; F7 Z% F* e% }) V Ultra-low current for deep hibernation mode1 U3 O2 b2 t, ]5 B
 2-way power-line charger box communication (CBC)' {# c1 m9 x5 d8 J
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