MI TV Remote Teardown

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MI TV Remote Teardown


This MI remote uses Bluetooth low energy SOC from Realtek (RTL8762C)

The RTL8762A supports an analog MIC interface that integrates a sigma-delta ADC, programmable gain amplifier, 5-Band equalizer and microphone bias circuit for voice command application. 


RTL8762AR


General

  • Ultra low power consumption with intelligent PMU
  • Supports Bluetooth 4.2 core specification
  • Integrated MCU to execute Bluetooth protocol stack
  • Supports multiple level Low Energy states
  • Supports LE L2CAP Connection Oriented Channel Support
  • Supports LE low duty directed advertising
  • Supports LE data length extension feature
  • Supports OTA (Over-the-Air) programming mechanism for firmware upgrade
  • Supports external 32KHz XTAL for low power mode
  • Supports GAP, ATT/GATT, SMP, L2CAP
  • Generic Applications for GAP Central, Peripheral, Observer and Broadcaster Roles

 Platform

  • ARM® Cortex™-M0 (Maximum 53MHz)
  • 256KB embedded flash
  • 80KB RAM
  • 2KB eFUSE
  • Supports AES128/192/256 encrypt/decrypt engine

Bluetooth Transceiver

  • Fast AGC control to improve receiving dynamic range
  • Supports Bluetooth Low Energy PHY
  • RTL8762AR: 15 GPIOs
  • RTL8762AR: 32-pin 5x5mm QFN

On Board Antenna:

RTL8762AR with on board Antenna



Pin assignment




MIC for Voice search


Clock:

Normal Clock: 40Mhz
Sleep Clock :32.768Khz

The RTL8762A defines three PMU power states for various conditions. 

Active Mode: All clock and power is turned on. All functions operate in this mode. 

Deep LPS Mode: High-speed clock and core domain power is turned off. The CPU stops running. Data can be retained in retention SRAM. 

Power Down Mode: Except in an ‘always-on’ power domain, all clock sources and power are turned off. Power down mode can only be woken by GPIO pins.

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