福州瑞芯微电子有限公司

SPECIFICATION

SPEC. NO.： REV： 1.2

DATE： 03. 09. 2012

PRODUCT NAME： RK903

APPROVED CHECKED PREPARED DCC ISSUE

NAME

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 Rockchip
RK903
WiFi+Bluetooth 4.0(HS)+FM RX
SIP Module

Spec Sheet

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Revision History
Date Revision Content Revised By Version
2011/12/08 -Initial released Yongle Lai 1.0
2012/1/05 -page14 module height definition Yongle Lai 1.1

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Contents
Contents ................................................................................................................... 2
1. Introduction......................................................................................................... 3
2. Features............................................................................................................... 4
3. Deliverables ........................................................................................................ 5
3.1 Deliverables .................................................................................................... 5
3.2 Regulatory certifications ................................................................................. 5
4. General Specification ......................................................................................... 6
4.1 General Specification...................................................................................... 6
4.2 Voltages .......................................................................................................... 6
4.2.1 Absolute Maximum Ratings .................................................................... 6
4.2.2 Recommended Operating Rating ........................................................... 6
The module requires two power supplies: VBAT and VDDIO. ......................... 6
5. WiFi RF Specification ......................................................................................... 7
5.1 2.4GHz RF Specification ................................................................................ 7
6. Bluetooth Specification...................................................................................... 9
6.1 Bluetooth Specification ................................................................................... 9
7. FM Specification ............................................................................................... 10
7.1 FM Specification (TBD)................................................................................. 10
8. Pin Assignments............................................................................................... 11
8.1 Pin Outline .................................................................................................... 11
8.2 Pin Definition ................................................................................................ 11
9. Dimensions ....................................................................................................... 14
9.1 Physical Dimensions..................................................................................... 14
9.2 Layout Recommendation .............................................................................. 15
10. External clock reference .................................................................................. 16
10.1 SDIO Pin Description .................................................................................. 16
11. Host Interface Timing Diagram ........................................................................ 17
11.1 Power-up Sequence Timing Diagram ......................................................... 17
11.2 SDIO Default Mode Timing Diagram ........................................................... 20
11.3 SDIO High Speed Mode Timing Diagram ................................................... 21
12. Recommended Reflow Profile ......................................................................... 22
13. MSL Level / Storage Condition ....................................................................... 23

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1. Introduction
Rockchip Technology would like to announce a low-cost and low-power consumption
module which has all of the WiFi, Bluetooth and FM functionalities. The highly integrated
RK903 module makes the possibilities of web browsing, VoIP, Bluetooth headsets, FM radio
functional applications and other applications. With seamless roaming capabilities and
advanced security, RK903 can also interact with different vendors’ 802.11b/g/n Access
Points in the wireless LAN.

The wireless module complies with IEEE 802.11 b/g/n standard and it can achieve up to a
speed of 72.2Mbps with single stream in 802.11n draft, 54Mbps as specified in IEEE
802.11g, or 11Mbps for IEEE 802.11b to connect to the wireless LAN. The integrated
module provides SDIO (4bit/1bit) / gSPI / HSIC interface for WiFi, UART / I2S / PCM
interface for Bluetooth and UART / I2S / PCM interface for FM.

This compact module is a total solution for a combination of WiFi + BT + FM technologies.

The module is specifically developed for Smart phones and Portable devices.

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2. Features
z 802.11b/g/n single-band radio
z Bluetooth V4.0(HS) with integrated Class 1 PA and Low Energy (BLE) support
z Concurrent Bluetooth, FM (RX) RDS/RBDS, and WLAN operation
z Simultaneous BT/WLAN receive with single antenna
z WLAN host interface options:
- SDIO v2.0x (1-bit/4-bit) — up to 50 MHz clock rate
- gSPI — up to 48 MHz clock rate
z BT host digital interface:
- UART (up to 4 Mbps)
z FM multiple audio routing options: I2S, PCM, eSCO, A2DP
z IEEE Co-existence technologies are integrated die solution
z ECI — enhanced coexistence support, ability to coordinate BT SCO transmissions
around WLAN receives

A simplified block diagram of the module is depicted in the figure below.

VDDIO VBAT
WLAN / BT ANT

SDIO

UART

HSIC

I2S
FM ANT PCM

AUD OUT

S_CLK

Ref_CLK

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3. Deliverables
3.1 Deliverables
The following products and software will be part of the product.
z Module with packaging
z Evaluation Kits
z Software utility for integration, performance test.
z Product Datasheet.
z Agency certified pre-tested report with the adapter board.

3.2 Regulatory certifications

The product delivery is a pre-tested module, without the module level certification. For
module approval, the platform’s antennas are required for the certification.

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4. General Specification
4.1 General Specification
Model Name RK903
Product Description Support WiFi/Bluetooth/FM functionalities

Dimension 9.5 mm x 9.5 mm x 1.5 mm (W*L*T)

WiFi Interface SDIOV2.0 (4bit/1bit) / gSPI

BT Interface UART/ I2S / PCM

FM Interface UART / I2S / PCM / Audio OUT
Operating temperature -30°C to 85°C
Storage temperature -40°C to 85°C
Humidity Operating Humidity 10% to 95%

4.2 Voltages
4.2.1 Absolute Maximum Ratings

Symbol Description Min. Max. Unit

VBAT Input supply Voltage -0.5 6 V
VDDIO Digital/Bluetooth/SDIO/SPI I/O Voltage -0.5 2.98 V

4.2.2 Recommended Operating Rating

The module requires two power supplies: VBAT and VDDIO.

Min. Typ. Max. Unit

Operating Temperature -10 25 65 deg.C
VBAT 3.0 3.6 5.0 V
VDDIO 1.4 1.8 2.9 V

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5. WiFi RF Specification
5.1 2.4GHz RF Specification

Conditions : VBAT=3.6V ; VDDIO=1.8V ; Temp:25°C

Feature Description
WLAN Standard IEEE 802.11b/g/n, WiFi compliant
Frequency Range 2.400 GHz ~ 2.497 GHz (2.4 GHz ISM Band)
Number of Channels 2.4GHz：Ch1 ~ Ch14
802.11b : DQPSK, DBPSK, CCK
Modulation
802.11 g/n : OFDM /64-QAM,16-QAM, QPSK, BPSK
802.11b /11Mbps : 16 dBm ± 1.5 dB @ EVM ≤ -9dB
Output Power 802.11g /54Mbps : 15 dBm ± 1.5 dB @ EVM ≤ -25dB
802.11n /65Mbps : 14 dBm ± 1.5 dB @ EVM ≤ -28dB
- MCS=0 PER @ -85dBm, typical
- MCS=1 PER @ -84dBm, typical
- MCS=2 PER @ -82dBm, typical
Receive Sensitivity
- MCS=3 PER @ -80dBm, typical
(11n,20MHz)
- MCS=4 PER @ -77Bm, typical
@10% PER
- MCS=5 PER @ -73 dBm, typical
- MCS=6 PER @ -71 dBm, typical
- MCS=7 PER @ -69 dBm, typical
- 6Mbps PER @ -86Bm, typical
- 9Mbps PER @ -85dBm, typical
- 12Mbps PER @ -85dBm, typical
Receive Sensitivity (11g) - 18Mbps PER @ -83dBm, typical
@10% PER - 24Mbps PER @ -81dBm, typical
- 36Mbps PER @ -78Bm, typical
- 48Mbps PER @ -73dBm, typical
- 54Mbps PER @ -72dBm, typical
- 1Mbps PER @ -90dBm, typical
Receive Sensitivity (11b) - 2Mbps PER @ -89Bm, typical
@8% PER - 5.5Mbps PER @ -88 dBm, typical
- 11Mbps PER @ -85 dBm, typical

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802.11b : 1, 2, 5.5, 11Mbps
Data Rate
802.11g : 6, 9, 12, 18, 24, 36, 48, 54Mbps
Data Rate 802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65Mbps
(20MHz ,Long GI,800ns)
Data Rate 802.11n : 7.2, 14.4, 21.7, 28.9, 43.3, 57.8, 65,72.2Mbps
(20MHz ,short GI,400ns)
802.11b : -10 dBm
Maximum Input Level
802.11g/n : -20 dBm
Antenna Reference Small antennas with 0~2 dBi peak gain

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6. Bluetooth Specification
6.1 Bluetooth Specification
Conditions : VBAT=3.6V ; VDDIO=1.8V ; Temp:25°C
Feature Description

General Specification

Bluetooth Standard Bluetooth V4.0 of 1, 2 and 3 Mbps.

Host Interface UART

Antenna Reference Small antennas with 0~2 dBi peak gain

Frequency Band 2.400 GHz ~ 2483.5 GHz

Number of Channels 79 channels

Modulation FHSS, GFSK, DPSK, DQPSK

RF Specification

Min. Typical. Max.

Output Power (Class 1.5) 10

Output Power (Class 2) 2

Sensitivity @ BER=0.1%
-86
for GFSK (1Mbps)
Sensitivity @ BER=0.01%
-86
for π/4-DQPSK (2Mbps)
Sensitivity @ BER=0.01%
-80
for 8DPSK (3Mbps)
GFSK (1Mbps):-20dBm
Maximum Input Level π/4-DQPSK (2Mbps) :-20dBm
8DPSK (3Mbps) :-20dBm

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7. FM Specification
7.1 FM Specification (TBD)
Conditions : VBAT=3.6V ; VDDIO=1.8V ; Temp:25°C
Feature Description

General Specification

Frequency Band 76MHz-108MHz

Host Interface HCI UART, I2S/PCM

Channel step 50 KHz

Analog Audio output load RL>30KΩ, CL>20pF

Characteristics Condition MIN TYP MAX UNIT

Output Power Level dBuV

Audio harmonic distortion
Transmitter (fmod=1KHz, △ f=75KHz, %
(FM Tx load = 120nH, Pilot △f=6.75KHz)
Q>30) Audio SNR
MONO
( △ f=22.5KHz, I2S
dB
audio in SNR ≧
Stereo
57dB )
RDS Sensitivity dBm
fmod=
Audio harmonic
1KHz
distortion %
fmod=
(Vin=1mV, △f=75KHz)
Receiver 3KHz
(FM Tx Antenna = Maximum SNR MONO
120nH, Q>30) (fmod=1KHz,△f=22.5
dB
KHz, BW=300Hz to Stereo
15KHz)

RF input power level dBuV

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8. Pin Assignments
8.1 Pin Outline
< TOP VIEW >

8.2 Pin Definition

NO Name Type Description

1 ANT I/O RF I/O port
2 GND － Ground connections
3 NC － Floating
4 NC － Floating
5 NC － Floating
6 NC － Floating

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7 NC － Floating
8 GND － Ground connections
9 XTAL_IN I Crystal input
10 XTAL_OUT O Crystal output
11 WL_HOST_WAKE O WLAN wake-up output
12 RF_SW_CTRL_6 － Floating (Don’t connected to ground)
13 RF_SW_CTRL_3 － Floating (Don’t connected to ground)
14 BT_PCM_OUT I/O PCM Data output
15 BT_PCM_CLK I/O PCM Clock
16 BT_PCM_IN I/O PCM data input
17 BT_PCM_SYNC I/O PCM sync signal
18 VDD_IO I Digital/Bluetooth/SDIO/SPI I/O Voltage
19 S_CLK_IN I External Low Power Clock input (32.768KHz)
20 SDIO_D2 I/O SDIO data line 2
21 SDIO_DO I/O SDIO data line 0
22 SDIO_CLK I/O SDIO CLK line
23 SDIO_CMD I/O SDIO command line
24 SDIO_D1 I/O SDIO data line 1
25 SDIO_D3 I/O SDIO data line 3
26 VIN_LDO I Input supply pin
27 GND － Ground connections
28 VIN_LDO_OUT O Output supply pin
29 GND － Ground connections
30 VBAT I BUCK regulator: Battery voltage input
31 WL_REG_ON I Internal regulators power enable/disable
32 BT_REG_ON I Internal regulators power enable/disable
33 BT_RST_N I Low asserting reset for Bluetooth core
34 GND － Ground connections
35 FM_RX I FM radio RF input antenna port
36 CLK_REQ_OUT O clock request out
37 FM_AUDOUT1 O FM_AUDIO output
38 FM_AUDOUT2 O FM_AUDIO output
39 BT_WAKE I Bluetooth wake-up input
40 BT_HOST_WAKE O Bluetooth wake-up output
41 GND － Ground connections
WL_GPIO_6 is select WLAN mode. Pull high for
42 GPIO_6 I/O
SPI mode, pull low for SDIO mode

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43 I2S_CLK I/O I2S clock
44 I2S_WS I/O I2S word select
45 I2S_DO I/O I2S data output
46 I2S_DI I/O I2S data input
47 BT_UART_TXD I/O Bluetooth UART interface
48 BT_UART_RXD I/O Bluetooth UART interface
49 BT_UART_RTS_N I/O Bluetooth UART interface
50 BT_UART_CTS_N I/O Bluetooth UART interface
51 NC － Floating
52 GND － Ground connections.
54 GND － Ground connections.
55 GND － Ground connections.
56 GND － Ground connections.
57 GND － Ground connections.
58 GND － Ground connections.
59 GND － Ground connections.
60 GND － Ground connections.
61 GND － Ground connections.

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9. Dimensions
9.1 Physical Dimensions

(Unit: mm)

< TOP VIEW > < TOP VIEW >

< Side View >

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9.2 Layout Recommendation

(Unit: mm)
< TOP VIEW >

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10. External clock reference

External LPO signal characteristics

Parameter LPO Clock Units

Nominal input frequency 32.768 kHz
Frequency accuracy ± 200 ppm
Duty cycle 30 - 70 %
Input signal amplitude 200 to 1800 mV, p-p
Signal type Square-wave or sine-wave -
>100k Ω
Input impedance
<5 pF
Clock jitter (integrated over 300Hz – 15KHz) <1 Hz

10.1 SDIO Pin Description

The RK903 supports SDIO version 2.0 for both 1-bit (25 Mbps), 4-bit modes (100 Mbps),
and high speed 4-bit (50 MHz clocks – 200 Mbps). It has the ability to stop the SDIO clock
and map the interrupt signal into a GPIO pin. This ‘out-of-band’ interrupt signal notifies the
host when the WLAN device wants to turn on the SDIO interface. The ability to force the
control of the gated clocks from within the WLAN chip is also provided.
™ Function 0 Standard SDIO function (Max BlockSize / ByteCount = 32B)
™ Function 1 Backplane Function to access the internal System On Chip (SOC)
address space (Max BlockSize / ByteCount = 64B)
™ Function 2 WLAN Function for efficient WLAN packet transfer through DMA (Max
BlockSize/ByteCount=512B)
SDIO Pin Description
SD 4-Bit Mode SD 1-Bit Mode g-SPI Mode
DATA0 Data Line 0 DATA Data Line DO Data Output
Data Line 1 or
DATA1 IRQ Interrupt IRQ Interrupt
Interrupt
Data Line 2 or
DATA2 RW Read Wait NC Not Used
Read Wait
DATA3 Data Line 3 NC Not Used CS Card Select

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CLK Clock CLK Clock SCLK Clock
CMD Command Line CMD Command Line DI Data Input

11. Host Interface Timing Diagram

11.1 Power-up Sequence Timing Diagram
The RK903 has three signals that allow the host to control power consumption by enabling
or disabling the Bluetooth, WLAN and internal regulator blocks. These signals are described
below.
Additionally, diagrams are provided to indicate proper sequencing of the signals for carious
operating states. The timing value indicated are minimum required values: longer delays are
also acceptable.
Note that the WL_REG_ON and BT_REG_ON are ORed in the RK903. The diagrams show
both signals going high at the same time (as would be the case if both REG signals were
controlled by a single host GPIO). If two independent host GPIOs are used (on for
WL_REG_ON and one for BT_REG_ON), then only one of the two signals needs to be high
to enable the RK903 regulators.
※ WL_REG_ON: Used by the PMU to power up the WLAN section. It is also
OR-gated with the BT_REG_ON input to control the internal BCM4330 regulators.
When this pin is high, the regulators are enabled and the WLAN section is out of
reset. When this pin is low the WLAN section is in reset. A “warm” WLAN reset can
be initiated by driving WL_REG_ON low for at least 10 microseconds. If both the
BT_REG_ON and WL_REG_ON pins are low, the regulators are disabled.
※ BT_REG_ON: Used by the PMU (OR-gated with WL_REG_ON) to power up the
internal RK903 regulators. If both the BT_REG_ON and WL_REG_ON pins are low,
the regulators are disabled.
※ BT_RST_N: Low asserting reset for Bluetooth and FM only. This pin has no effect
on WLAN and does not control any PMU functions. This pin must be driven high or
low (not left floating).

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32.768 KHz Sleep Clock

WLAN=ON, Bluetooth=ON

32.768 KHz Sleep Clock

WLAN=OFF, Bluetooth=OFF

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32.768 KHz Sleep Clock

WLAN=ON, Bluetooth=OFF

32.768 KHz Sleep Clock

WLAN=OFF, Bluetooth=ON

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11.2 SDIO Default Mode Timing Diagram

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11.3 SDIO High Speed Mode Timing Diagram

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12. Recommended Reflow Profile

Referred to IPC/JEDEC standard.
Peak Temperature : <250°C
Number of Times : ≤2 times

250℃

2.5°C/sec

40~70 sec

2.5℃/sec

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13. MSL Level / Storage Condition

※NOTE : Accumulated baking time should not exceed 96hrs

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