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PDF RDA5851 Data sheet ( Hoja de datos )
| Número de pieza | RDA5851 | |
| Descripción | Bluetooth Multi-Media Single-Chip Terminal | |
| Fabricantes | RDA | |
| Logotipo |  |
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RDA5851 Datasheet V1.0
RDA5851 Bluetooth Multi-Media Single-Chip Terminal
FEATURES
● External Memory Interface
Integrated 32Mb 2.8V Flash on chip, and also
Supports external SPI Flash
Integrated PSRAM on chip, 16Mb size
Power efficient using retention technology to
avoid floating lines
Flexible IO voltage
● Multimedia
Support camera interface up to 3Mpix sensors
with 8 bit parallel or 1/2/4 data series
interface,Support CSI camera interface
Support LCD module interface with 8 bit parallel
interface or SPI series interface
Support up to 480X640 resolution
4-layers blending graphical engine capable of
resizing and YUV2RGB conversion
Proprietary 16/32-bit digital signal processing
engine to improve computation performance
● Power Management
Power On reset control
Internal 32K OSC for standby/ shutoff/ sleep
state
Battery charger (from USB or AC charger)
Integrated all internal voltages from VBAT
Provide all LDOs for external components
● User Interface
8x8 Keypad scanner with multiple key detection,
support ADC serial interface Keypad
Alerter
Light Pulse Generator for blinking LED
Pulse Width Modulator for Keyboard or backlight
control
Touch screen interface
LED drivers for LCD and keyboard backlight
Calendar (Real Time Clock) with alarm
● Connectivity
USB 1.1 Device
2 UART interface
1 SD controller
1 SD/SPI controller
SPI with multiple chip select
I2C controller
General Purpose I/Os
2 GPADC, 10bits, 2 channels
● Audio
2 channels voice ADC, 8kHz, 13 bits/sample
for headset and on-board microphone
Voice DAC, 8kHz, 13 bits/sample for
receiver
High fidelity Stereo DAC, up to 48kHz, 16
bits per sample
Stereo Audio speaker driver
1.5W differential output stereo amplifier for
loudspeaker, Class K
Stereo analog audio line input
● Debug
Host debug interface allowing non intrusive
in depth investigation
GDB debugger
Execution logger and profiling through debug
port
High level text based debugging using Host
debug or USB
● FM
Integrated Broadcast FM tuner which can be
tuned world-wide frequency band
● Bluetooth
Integrated Bluetooth SoC complaint with 2.1
+ EDR standard
RDA Microelectronics Inc. CONFIDENTIAL
1 / 88
1 page  
RDA5851 Datasheet V1.0
Figure Index
Figure B.1: XCPU Block Diagram .............................................................................................................. 11
Figure B.2: Typical transfer operation ........................................................................................................ 22
Figure B.3: Debug channel block diagram ................................................................................................. 24
Figure B.4: General Message Format ........................................................................................................ 28
Figure B.5: Read Return Message Format ................................................................................................ 28
Figure B.6: Event Message Format ........................................................................................................... 28
Figure B.7: Tx Switch STM ........................................................................................................................ 30
Figure B.8: IrDA SIR Data Format ............................................................................................................. 30
Figure B.9: YUV 4:2:2 Subsampling ........................................................................................................... 42
Figure B.10: SPI Write & Read Timing ....................................................................................................... 46
Figure B.11: PMU Power ON ..................................................................................................................... 47
Figure B.12: POR triggered by POWKEY press ........................................................................................ 48
Figure B.13: Principle schematic for Power-Profiles usage ........................................................................49
Figure B.14: Charging I-V Curve ................................................................................................................ 51
Figure B.15: PLL Clock Path ...................................................................................................................... 52
Figure B.16: USB PHY FS 1.1 .................................................................................................................. 53
Figure B.17: GPADC Timing Diagram ....................................................................................................... 54
Figure B.18: FM Tuner Block Diagram ....................................................................................................... 55
Figure B.19: Bluetooth Block Diagram ....................................................................................................... 57
Figure E.1: SCLK Timing Diagram ............................................................................................................. 83
Figure E.2: SPI Write Timing Diagram ...................................................................................................... 83
Figure E.3: SPI Read Timing Diagram ....................................................................................................... 84
Figure G.1: RDA5851 Ball out diagram ..................................................................................................... 86
RDA Microelectronics Inc. CONFIDENTIAL
5 / 88
5 Page 
RDA5851 Datasheet V1.0
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Figure B.1: XCPU Block Diagram
32-bit Instruction Set
Instruction Formats
The RISC processor supports three instruction formats:
R – Register base instruction format
● RD –Target register
● RS – First operand
● RT – Second operand
● SHAMT – Shift amount for shift instructions
● S Code – Instruction code for R type Instructions
0 RS RT RD SHAMT
I – Immediate operand instruction format
● Opcode –Instruction Code
● RS – Source or Base register
● RT – Target Register or Reg-Immediate
RDA Microelectronics Inc. CONFIDENTIAL
S Code
11 / 88
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