Part Number: 57F68, CSR57F68, BC57F687A05

Function: BlueTunes ROM Stereo Headset Solution

Package: QFN 68 Pin

Manufacturer: ETC, CSR

Images:

Description

This is Single-chip buletooth V2.1 + EDR System.

Based on BlueCore 5-Multimedia, the BlueTunes ROM QFN integrates a Bluetooth radio, baseband, DSP, high-quality audio codec, SMPS, LDO and a battery charger for minimal BOM, component count and PCB area. BlueTunes ROM QFN uses advanced DSP features for the latest stereo enhancements and to improve audio quality, including SBC and MP3 decoder, support for FastStream (low-latency codec) and
5‑band EQ.

BlueTunes ROM QFN includes as standard cVc dual and single microphone algorithms for echo and noise suppression. cVc dual-microphone algorithm can provide >30dB of noise suppression in both stationary and dynamic noise conditions such as; babble, road, music and competing voices. In addition an acoustic echo canceller is now integrated into the cVc dualmicrophone solution, further enhancing the far-end
user experience.

57F68 Pinout

Auxiliary Features

1. Crystal oscillator with built-in digital trimming
2. Power management includes digital shutdown and wake-up commands with an integrated low-power oscillator for ultra-low power Park/Sniff/Hold mode
3. Clock request output to control external clock
4. On-chip regulators: 1.5V output from 1.8V to 2.7V input
5. On-chip high-efficiency switched-mode regulator : 1.8V output from 2.7V to 4.4V input
6. Power-on-reset cell detects low-supply voltage
7. 10-bit ADC available to applications
8. On-chip 150mA charger for lithium ion/polymer batteries

57F68 Datasheet