Document
BK1086/88
BROADCAST AM/FM/SW/LW RADIO RECEIVER
Features
Worldwide 64~108 MHz FM band support Worldwide 520~1710kHz AM band support SW band support(2.3-21.85MHz, BK1088 only) LW band support(153-279kHz,BK1088 only) Automatic gain control(AGC) Automatic frequency control(AFC) Digital FM stereo decoder Automatic FM stereo/mono blend Automatic noise suppression 50us/75us de-emphasis RDS/RBDS decoder 2.4 ~ 5.5 V supply voltage Wide range reference clock support 32.768KHz crystal oscillator 4x4 mm 24-pin QFN package
GPIO1 GPIO2 20 GPIO3 19 18 VA 17 GND GND PAD BK1086/88 16 LOUT 15 ROUT 14 GND 13 VD 7 MODE 8
SEN
GND
NC 23
24 GND FMI RFGND AMI GND NC 1 2 3 4 5 6
22
NC 9 SCLK
21
10 SDIO
11 RCLK
12 VIO
QFN 24 Pin Assignments (Top View)
Applications
Table and portable radios CD/DVD players Modules
Functional Block Diagram
FM ANT
MIXER FM LNA RDS
General Description
The BK1086/88 AM/FM receiver employs a low-IF architecture, mixed signal image rejection and all digital demodulation technology. The station scan of BK1086/88 searches radio stations based on both the channel RSSI estimation and signal quality assessment, increases the number of receivable stations while avoids false stops. BK1086/88 enables FM/AM/SW/LW radio reception with low power, small board space and minimum number of external component.
MW ANT RFGND
MIXER AM LNA PGA PGA
I Q
ADC
DAC
LOUT ROUT
DSP
ADC DAC
AUTO TUNE
32.768KHz
0/90
GPIO
SDIO SEN SCLK VIO
VDD
REG
BK1086/88
Rev.1.0 Copyright©2010 by Beken Corporation BK1086/88 Beken Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
MCU
DPLL
APLL
CONTROL INTERFACE
Free Datasheet http://www.datasheet4u.net/
BK1086/88
1 Table of Contents
1 2 Table of Contents.................................................................................................................. 2 Functional Description ......................................................................................................... 3 2.1 FM Receiver ................................................................................................................... 3 2.2 AM Receiver................................................................................................................... 3 2.3 Interface Bus .................................................................................................................. 4 2.3.1 3-wire bus mode ........................................................................................................ 4 2.3.2 I2C bus mode............................................................................................................. 4 2.4 Stereo Audio Processing................................................................................................ 5 2.5 Seek/Tune System ......................................................................................................... 5 2.6 GPIO output ................................................................................................................... 6 2.7 RDS Processor............................................................................................................... 6 2.8 Reference Clock............................................................................................................. 7 2.9 Initialization Sequence ................................................................................................... 7 3 Design Specification............................................................................................................. 8 3.1 Recommended Operating Conditions............................................................................ 8 3.2 Power Consumption Specification ................................................................................. 8 3.3 Receiver Characteristics ................................................................................................ 9 3.4 I2C Control Interface Characteristics ........................................................................... 11 3.5 3-Wire Control Interface Characteristics ...................................................................... 12 4 Register Definition .............................................................................................................. 13 5 Pin Assignment................................................................................................................... 23 6 Typical Application Schematic.......................................................................................... 24 7 Package information........................................................................................................... 25 8 Solder Reflow Profile.......................................................................................................... 27 9 Order information .................................................................................................