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RDA5876 Schematic ( PDF Datasheet ) - RDA

Teilenummer RDA5876
Beschreibung SINGLE CHIP FOR BLUETOOTH & FM RADIO TUNER
Hersteller RDA
Logo RDA Logo 




Gesamt 22 Seiten
RDA5876 Datasheet, Funktion
RDA5876
SINGLE CHIP FOR BLUETOOTH & FM RADIO TUNER
Rev.1.2–07.2011
1 General Description
RDA5876 integrates industry-lead Bluetooth and
FM radio tuner into one chip and is optimized for
mobile applications. Bluetooth and FM can work
simultaneously and independently, with low power
consumption levels target to battery powered
devices. For the highest integration level, the
required board space has been minimized and
customer cost has been reduced. Manufacturers
can easily and fast integrate RDA5876 on their
product to enable a rapid time to market.
RDA5876 uses CMOS process with a compact
4*4mm 32-pin QFN package.
32 31 30 29 28 27 26 25
UART_RX 1
PCM_DOUT 2
PCM_DIN 3
PCM_CLK 4
PCM_SYNC 5
VIO 6
VOUT18 7
DCDC_SW 8
GND PAD
RDA5876
32 Pins
24 NC
23 FM_IP
22 FM_IN
21 AGPIO1/BT_PRIORITY
20 AGPIO0/BT_ACTIVE
19 RF
18 NC
17 NC
9 10 11 12 13 14 15 16
Figure1-1. RDA5876 Top View
1.1 Bluetooth Features
z CMOS single-chip fully-integrated radio and
baseband
z Compliant with Bluetooth 2.1 + EDR specification
z Bluetooth Piconet and Scatternet support
z ARM7-based microprocessor with on-chip ROM
and RAM
z Meet class 2 and class 3 transmitting power
requirement, support class1 operation with external
power amplifier
z Provides +10dbm transmitting power
z NZIF receiver with -90dBm sensitivity
z Battery power supply directly with internal LDO
z Support DCXO with internal oscillator circuit
z Up-to 4Mbps high speed UART HCI support
z Support AFH
z Support 3-wire WIFI Co-existence handshake
signals
z Low power consumption
z Minimum external component
z Internal 32k LPO.
Copyright © RDA Microelectronics Inc. 2009. All rights are reserved.
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.






RDA5876 Datasheet, Funktion
RDA Microelectronics, Inc.
RDA5876 Datasheet V1.2
5 Bluetooth Section Electrical Characteristics
Table 5-1 DC Electrical Specification (Recommended Operation Conditions):
SYMBOL
DESCRIPTION
VBAT
Supply Voltage from battery or LDO
Tamb
VIL
VIH
VTH
Ambient Temperature
CMOS Low Level Input Voltage
CMOS High Level Input Voltage
CMOS Threshold Voltage
Notes:
1. VIO=1.8~3.3V
MIN
3.3
-20
0
0.7*VIO
TYP
4.0
27
0.5*VIO
MAX
4.2
+50
0.3*VIO
VIO
UNIT
V
V
V
V
Table 5-2 DC Electrical Specification (Absolute Maximum Ratings):
SYMBOL
Tamb
IIN
VIN
Vlna
DESCRIPTION
Ambient Temperature
Input Current
Input Voltage
LNA Input Level
MIN TYP
-20
-10
-0.3
MAX
+80
+10
VIO+0.3
+10
UNIT
°C
mA
V
dBm
Table 5-3 LDO Power consumption specification
(VBAT = 4.0 V, VIO = 2.8V, TA = +27, RF 9dBm, LDO mode unless otherwise specified)
STATE
Headset voice
Headset SNIFF
HCI only active
Both SCAN
DeepSleep
internal LDO off
DESCRIPTION
HV3 type
500ms cycle
Condition
NO INQUIRE and PAGE SCAN
1.28S cycle
26Mhz crystal off
LDO_ON off
INQUIRE and PAGE SCAN
Ivbat=105uA,Ivio=13uA,External
32K input
Ivbat=6uA,Ivio=1uA
TYP
18
0.5
5.7
1.0
118
7
UNIT
mA
mA
mA
mA
μA
μA
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.
Page 6 of 22

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RDA5876 pdf, datenblatt
RDA Microelectronics, Inc.
Power Supply
The RDA5876 FM section integrated LDO which
supplies power to the chip. The external supply
voltage range is 1.8-5.5 V.
RESET and Control Interface select
The RDA5876 FM section is RESET itself When
VIO is Power up. And also support soft reset by
trigger 02H BIT1 from 0 to 1. The control interface
is I2C.
RDA5876 Datasheet V1.2
I2S Audio Data Interface
The RDA5876 supports I2S (Inter_IC Sound Bus)
audio interface. The interface is fully compliant
with I2S bus specification. When setting I2SEN bit
high, RDA5876 will output SCK, WS, SD signals
from GPIO_FM3, GPIO_FM1, GPIO_FM2 as I2S
master and transmitter, the sample rate is
48Kbps 44.1kbps,32kbps….. RDA5876 also
support as I2S slaver mode and transmitter, the
sample rate is less than 100kbps.
Control Interface
The I2C interface is compliant to I2C Bus
Specification 2.1. It includes two pins: SCL and
SDA. A I2C interface transfer begins with START
condition, a command byte and data bytes, each
byte has a followed ACK (or NACK) bit, and ends
with STOP condition. The command byte includes
a 7-bit chip address (0010000b) and a R/W bit.
The ACK (or NACK) is always sent out by receiver.
When in write transfer, data bytes is written out
from MCU, and when in read transfer, data bytes
is read out from RDA5876. There is no visible
register address in I2C interface transfers. The
I2C interface has a fixed start register address
(0x02h for write transfer and 0x0Ah for read
transfer), and an internal incremental address
counter. If register address meets the end of
register file, 0x3Ah, register address will wrap
back to 0x00h. For write transfer, MCU programs
registers from register 0x02h high byte, then
register 0x02h low byte, then register 0x03h high
byte, till the last register. RDA5876 always gives
out ACK after every byte, and MCU gives out
STOP condition when register programming is
finished. For read transfer, after command byte
from MCU, RDA5876 sends out register 0x0Ah
high byte, then register 0x0Ah low byte, then
register 0x0Bh high byte, till receives NACK from
MCU. MCU gives out ACK for data bytes besides
last data byte. MCU gives out NACK for last data
byte, and then RDA5876 will return the bus to
MCU, and MCU will give out STOP condition.
Details please refer to RDA5876 Programming
Guide and RDA5802N Programming Guide and
Datasheet.
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.
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