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PDF ( 数据手册 , 数据表 ) BK1088

零件编号 BK1088
描述 (BK1086 / BK1088) BROADCAST AM/FM/SW/LW RADIO RECEIVER
制造商 BEKEN
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BK1088 数据手册, 描述, 功能
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
Applications
„ Table and portable radios
„ CD/DVD players
„ Modules
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.
24 23 22 21 20 19
GND 1
18 VA
FMI 2
RFGND 3
GND PAD
17 GND
16 LOUT
AMI 4
BK1086/88
15 ROUT
GND 5
14 GND
NC 6
13 VD
7 8 9 10 11 12
QFN 24 Pin Assignments (Top View)
Functional Block Diagram
FM ANT
FM LNA
MIXER
RFGND
AM LNA
MIXER
PGA
PGA
ADC
ADC
RDS
DSP
DAC LOUT
DAC ROUT
32.768KHz
VDD
AUTO
TUNE
0/90
DPLL
APLL
REG BK1086/88
GPIO
SDIO
SEN
SCLK
VIO
Rev.1.0
Copyright©2010 by Beken Corporation
BK1086/88
Beken Confidential. Information contained herein is covered under non-disclosure agreement (NDA).
Free Datasheet http://www.datasheet4u.net/







BK1088 pdf, 数据表
BK1086/88
3 Design Specification
3.1 Recommended Operating Conditions
Table 1 Recommended Operating Conditions
Parameter
Symbol
Test Condition Min Typ Max Unit
Digital Supply Voltage
VD
2.4 — 5.5
V
Analog Supply Voltage
VA
2.4 — 5.5
V
Interface Supply Voltage
VIO
1.6 — 3.6
V
Ambient Temperature
TA
–20 25 85 °C
Notes:
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. Typical values
apply at VD = VA = 3.3 V and 25 °C unless otherwise stated. Parameters are tested in production unless otherwise stated.
3.2 Power Consumption Specification
Table 2 Power Consumption Specification
Parameter
Supply Current (FM Mode)
Supply Current (AM Mode)
Power down Current
Interface Power down Current
Symbol
IS
IS
IPD
IpIO
Test Condition
ENABLE = 1
DISABLE = 0
ENABLE = 1
DISABLE = 0
ENABLE = 0
DISABLE = 1
SCLK, RCLK inactive
ENABLE = 0
Min
Typ
25
24
10
1.9
Max
27
26
20
5
Unit
mA
mA
μA
μA
Proprietary and Confidential
Page 8 of 30
Free Datasheet http://www.datasheet4u.net/







BK1088 equivalent, schematic
[4:0]
VOLUME
[4:0]
5’h1f
BK1086/88
AM: 0: 1e3
FM: 0: 10e3
1: 5e3
1: 50e3
2: 9e3
2: 100e3
3: 10e3
3: 200e3
Volume
0x00 is the lowest and 0x1F is highest (0dBFS). 2dB each
Register 06h. System Configuration3 (0x01ef)
BIT
[15:14]
[13:12]
[11]
[10:4]
[3:0]
NAME
SMUTER[1:0]
SMUTEA[1:0]
CLKSEL
SKSNR[6:0]
SKCNT[3:0]
DEFAULT
2’h0
2’h0
1’h0
7’h1e
4’hf
DESCRIPTION
Soft mute Attack/Recover Rate
00 = fastest
01 = fast
10 = slow
11= slowest
Soft mute Attenuation.
00 = 16db.
01 = 14db
10 = 12db,
11 = 10db
Clock Select
0 = External clock input,
1= Internal oscillator input.
Seek SNR Threshold.
Required channel SNR for a valid seek channel
Seek Impulse Detection Threshold
Allowable number of impulse for a valid seek channel while
setting all zeros means not use Impulse number to judge the
channel’s validity.
Register 07h. Test1 (0x0900)
BIT
[15:14]
[13]
[12]
[11]
[10]
[9:8]
NAME
Reserved
MODE
SIQ
IMPEN
BPDE
IMPTH[1:0]
DEFAULT
2’h0
1’h0
1’h0
1’h1
1’h0
2’h1
DESCRIPTION
Reserved
Receiver Mode Select
0 = FM receiver
1 = AM receiver
IF I/Q Signal switch.
0 = Normal operation
1 = Reversed I/Q signal
Impulse Remove Enable
0 = Disable
1 = Enable
De-emphasis Bypass
0 = Normal operation
1 = Bypass de-emphasis
Threshold of Impulse Detect.
00 = toughest
Proprietary and Confidential
Page 16 of 30
Free Datasheet http://www.datasheet4u.net/










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