RDA 5856TE Datasheet

RDA5856TE

Features

 Bluetooth v4.2 specification compliant,

supports BR/EDR

 Bluetooth radio includes integrated balun
 Support A2DP 1.2, HFP 1.5 and AVRCP1.5
 104MHz RISC MCU and 104MHz Voice

Co-Processor(VoC) DSP core

 Internal MCU ROM and RAM, VoC memory

and in-package serial flash memory.

 Various serial interfaces: USB OTG 2.0 HS,

UART, I2C Master and SD Card Interface

 Support analog key
 Up to 4 PWM output
 Independent powered Real-Time Clock
 One channel 16 bits voice ADC and 16 bits

stereo DAC

 Audio interfaces: analog stereo line in
 Support MP3/SBC/WMA/ACC decoder
 Support audio playback from SD/USB card
 Integrated broadcast FM tuner which can

be tuned word-wide frequency band

 Debug host interface allowing non-intrusive

in depth investigation GDB debugger

 Internal 32K OSC for standby, shutoff and

sleep state

 Integrated LDO

RDA5856TE

High performance, highly integrated
multi-media system-on-chip solution
with bluetooth connectivity

General Description

RDA5856TE is a high performance, highly
integrated multi-media system-on-chip solution
with Bluetooth connectivity, which specialized
in music and audio applications.
Integrating all essential electronic components,
including baseband, bluetooth transceiver,
power management, FM receiver onto a single
system on chip, RDA5856TE offers best in class
bill of material, space requirement and
cost/feature ratio for bluetooth music and

Applications

 Bluetooth speakers
 Bluetooth music box
 Bluetooth headset or headphone

The 104MHz Voice Co-Processor supports
various audio applications. The integrated
audio codec supports two channels DAC and
one channel ADC. Playback form SD card and
USB card are also supported.

audio application.

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RDA5856TE

Table of Contents

Table of Contents ......................................................................................................................................... 2

1. Product Details ................................................................................................................................... 3

2. Package and Pinout ............................................................................................................................ 4

2.1. Pin Assignment ........................................................................................................................... 4

2.2. Pin Description ............................................................................................................................ 4

2.3. Package Dimensions ................................................................................................................... 5

3. Function Block Diagram ..................................................................................................................... 6

4. Clock and reset ................................................................................................................................... 6

5. MCU .................................................................................................................................................... 6

6. USB ..................................................................................................................................................... 7

7. VoC ..................................................................................................................................................... 7

8. Flash Controller .................................................................................................................................. 7

9. DMA .................................................................................................................................................... 8

10. AIF ....................................................................................................................................................... 8

11. SDMMC Controller ............................................................................................................................. 8

12. Timer .................................................................................................................................................. 8

13. GPIO .................................................................................................................................................... 8

14. UART ................................................................................................................................................... 9

15. Debug Host ......................................................................................................................................... 9

16. I2C Master .......................................................................................................................................... 9

17. Calendar ........................................................................................................................................... 10

18. PWM ................................................................................................................................................. 10

19. Audio Codec ..................................................................................................................................... 10

20. Power Management ......................................................................................................................... 10

20.1. Power on/off control ............................................................................................................. 11

20.2. Power Mode .......................................................................................................................... 11

21. Bluetooth Transceiver ...................................................................................................................... 11

22. FM ..................................................................................................................................................... 12

23. Electrical Characteristics .................................................................................................................. 13

23.1. BT RF Specifications ............................................................................................................... 13

23.2. FM RF Specifications ............................................................................................................. 15

23.3. Audio Characteristics............................................................................................................. 15

23.4. Recommended Operating Conditions ................................................................................... 15

24. Software ........................................................................................................................................... 16

25. Revision History ................................................................................................................................ 17

Copyright@2016 RDA Microelectronics. CONFIDENTIAL 2 / 17

1. Product Details

RDA5856TE

Bluetooth Radio

 Fully compliant with Bluetooth radio

specification 4.2 including basic rate and
EDR.

 On-chip Balun which combines the

balanced outputs of the PA on transmit and
produces the balanced input signals for the
LNA.

Microcontrollers

 RDA in house developed 16/32 bit

processor

 Reduced Instruction Set Architecture
 Efficient 6-stage instruction pipeline

Voice Co-Processor

 RDA Internal designed Voice DSP core
 Two 16x16 -> 32 Multipliers
 Bi-MAC (two accumulations on the same

register per cycle)

 Eight 16 bit general purpose registers and

four 32 bit general purpose registers

 Low power mode supported

Package Options

 TSSOP24-EP

Audio Interface

 Audio codec with 16 bits stereo DAC and

one channel 16 bits ADC

 Support sample rate of 8, 11.025, 12, 16,

22.05, 32, 44.1 and 48 KHz.

Peripheral and Interfaces

 Debug host for debug and normal UART
 UART interface
 USB 2.0 OTG high speed interface, support

USB audio

 SDMMC controller for SD card
 I2C master for internal and external

modules access

 Up to 8 GPIOs

Integrated Power Management

 Multiple LDOs

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2. Package and Pinout

RDA5856TE

TSSOP24-EP

1

2

3

4

5

6

SD_DAT/GPIO_4<3>

SD_CMD/GPIO_4<5>

GPIO_3<7>

DVSS

DVDD

SD_CLK/GPIO_4<4>

7

8

9

10

11

12

AVSS_3V3

USB_DN/GPIO_0<0>

USB_DP/GPIO_0<1>

GPIO_4<0>

VBAT

24

23

22

21

20

19

18

17

16

15

14

13

AVDD_3V3

XTAL2

KEYSENSE/
GPIO_0<4>

AVDD_RF

BT_ANT

AVSS_RF

XTAL1

AVSS_CODEC

MIC_IN

DACOUT

LINEIN

AVDD_CODEC

FM_ANT

Pin Type

Description

I/O

Digital input/output

I

Digital input

O

Digital output

A, I

Analog input

A, O

Analog output

A, I/O

Analog input/output

PWR

Power

GND

Ground

PIN NO

NAME

TYPE

DESCRIPTION

1

GPIO_3<7>

I/O

Multiple functions configured by p37_cfg.
0: General purpose input/output
1: PWM output0
2: UART TXD
4: Debug Host TXD
7: GPIO interrupt input 6

2

GPIO_4<0>

I/O

Multiple functions configured by p40_cfg.
0: General purpose input/output
1: PWM output 1
4: Debug Host RXD
7: GPIO interrupt input 5

3

SD_DAT/GPIO_4<3>

I/O

Multiple functions configured by p43_cfg.
0: Debug Host Clock
3: General purpose input/output
5: SD data
7: GPIO interrupt input 2

4

SD_CLK/GPIO_4<4>

I/O

Multiple functions configured by p44_cfg.
0: Debug Host RXD
3: General purpose input/output
5: SD clock
7: GPIO interrupt input 1

5

SD_CMD/GPIO_4<5>

I/O

Multiple functions configured by p45_cfg.
0: Debug Host TXD
3: General purpose input/output
5: SD command
7: GPIO interrupt input 0

6

AVDD_3V3

PWR

Power of analogue 3.3V

2.1. Pin Assignment

RDA5856TE

2.2. Pin Description

Figure 1 Pin Assignment

Table 1 Pin Types

Table 2 pin description

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RDA5856TE

7

AVSS_3V3

GND

Ground of analogue 3.3V

8

DVSS

GND

Ground of digital core

9

DVDD

PWR

Power of digital code

10

VBAT

PWR

Battery power supply

11

USB_DN/GPIO_0<0>

A, I/O
Or
I/O

Multiple functions configured by p00_cfg.
0: General purpose input/output
2: UART RXD
6: USB negative input
7: USB detect negative input

12

USB_DP/GPIO_0<1>

A, I/O
Or
I/O

Multiple functions configured by p01_cfg.
0: General purpose input/output
2: UART TXD
6: USB positive input
7: USB detect positive input

13

LINEIN

A, I

Line input

14

DACOUT

A, O

DAC output

15

MIC_IN

A, I

Microphone input

16

AVDD_CODEC

PWR

Analogue power supply of headphone

17

AVSS_CODEC

GND

Analogue ground of headphone

18

FM_ANT

A, I

FM receiver input

19

AVDD_RF

PWR

Analogue power supply of bluetooth RF

20

AVSS_RF

GND

Analogue ground of bluetooth RF

21

BT_ANT

AI/O

Bluetooth transmitter output/receiver input

22

KEYSENSE/GPIO_0<4>

A, I
or
I/O

Multiple functions configured by p04_cfg.
0: General purpose input/output
4: Debug Host RXD
5: Key input

23

XTAL1

A, I

XTAL input

24

XTAL2

A, O

XTAL output

2.3. Package Dimensions

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3. Function Block Diagram

I2C

Master

Debug

Host

UART SD/MMC PWM

USB 2.0

OTG

GPIO AIF

VOC

MCU

VOC

MEM

MCU

RAM

MCU

RAM

DMA

BT

Baseband

FM

Analog Audio

CODEC

BT

Radio

BT_ANT

FM_ANT

Line In
MIC In

DAC Out

PMU

Flash

Controller

DP/DN

PMW

out x4

SD UARTUARTHST_CLK

I2C

GPIO

Serial
Flash

SYSPLL

AUDPLL DIV

clk_codec

clk_sys

XTAL

RDA5856TE

Figure 2 RDA5856TE Block Diagram

4. Clock and reset

RDA5856TE has a reference clock input from either a crystal or an external clock source. There are
two internal PLL which use XTAL clock as reference. They are used for system and audio
applications.

Figure 3 Clock Structure

RDA5856TE has several reset sources, as following:

 POR

Entire SoC is reset after power supply ramping from 0v to VBAT.

 External Pin Reset

Entire SoC is reset except PMU.

 Warm Reset

 Global soft reset

DBB can be reset by set soft reset register in system control register map.

 Watch Dog Reset

DBB will be reset when watch dog timer expired.

5. MCU

RDA RISC is a 16/32-bits processor which using a Reduced Instruction Set Architecture, an efficient
6-stage instruction pipeline, it provides high performance to the system.

 RDA RISC Core.

 32x32-bit Multiplier.

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