Reference integration note for CG2900, CG2905 - Bluetooth

Reference integration note 

for CG2900, CG2905 

Technical note 

Abstract 

This guide is targeted to help Bluetooth ® members or their BQEs understand the role of 

the CG2900 and CG2905 in a complete Bluetooth ® wireless product being integrated for 

qualification. 

2/1424_CRH_109_1156 Rev A 2012-05-23 CG2900, CG2905 

© Copyright ST-Ericsson 2012. All rights reserved. COMPANY CONFIDENTIAL

Reference integration note for CG2900, 

CG2905 


Legal information 

Legal information 

© Copyright ST-Ericsson 2012. All rights reserved. 

Disclaimer 

The contents of this document are subject to change without prior notice. ST-Ericsson 

makes no representation or warranty of any nature whatsoever (neither expressed nor 

implied) with respect to the matters addressed in this document, including but not limited 

to warranties of merchantability or fitness for a particular purpose, interpretability or 

interoperability or, against infringement of third party intellectual property rights, and in no 

event shall ST-Ericsson be liable to any party for any direct, indirect, incidental and or 

consequential damages and or loss whatsoever (including but not limited to monetary 

losses or loss of data), that might arise from the use of this document or the information in 

it. 

ST-Ericsson and the ST-Ericsson logo are trademarks of the ST-Ericsson group of 

companies or used under a license from STMicroelectronics NV or Telefonaktiebolaget 

LM Ericsson. 

All other names are the property of their respective owners. 

Trademark list 

All trademarks and registered trademarks are the property of their respective owners. 

2/1424_CRH_109_1156 Rev A 2012-05-23 CG2900, CG2905 2 (15) 





Contents 

Contents 

1 About this document 4 

1.1 Purpose 4 

1.2 Scope 4 

1.3 Audience 4 

1.4 Revision information 4 

1.5 Reference list 4 

2 Preface 6 

3 Product overview 7 

3.1 Hardware features 7 

3.1.1 Product type declaration 7 

3.1.2 Hardware overview 7 

3.1.3 Standard operating conditions 7 

3.1.4 Application 8 

3.1.5 Block diagram 10 

3.1.6 Features 11 

3.1.7 Radio modules 11 

3.1.8 Interfaces 11 

3.1.9 Application requirements 12 

3.1.10 Pin description 13 

3.1.11 Bill of material 13 

3.1.12 Sample porting 13 

3.1.13 Hardware and software reference platforms 13 

4 Contact information 14 

Glossary 15 






About this document 

1 About this document 

1.1 Purpose 

This guide is targeted to help Bluetooth ® members or their BQEs understand the role of 

the CG2900 and CG2905 in a complete Bluetooth ® wireless product being integrated for 

qualification. The Bluetooth ® program reference document requires that all Bluetooth ® 

components have a Reference Integration Note (RIN) as a prerequisite for qualification. 

This RIN has been uploaded to the Bluetooth ® SIG qualification listing interfaces for the 

qualified design ID B017682 prior to qualification of this design and is available to 

members when creating new Bluetooth products by integrating this product into their 

product implementation. 

1.2 Scope 

This RIN consists of a product overview with the product’s features, and its detailed 

description of the hardware design, software design, bill of materials, schematics showing 

the electrical architecture of the product’s hardware design, and so on. 

1.3 Audience 

This guide provides user information about the Bluetooth ® CG2900 and CG2905. Users 

interested in understanding the design should read this guide. 

1.4 Revision information 

Table 1 Revision history 

Date Rev. Comments 

2012-05-23 1 First version. 

1.5 Reference list 

[1] CG2900 datasheet CD00237201 

[2] Getting started with CG2900 CD00283266 

[3] CG2900 hardware user manual CD00263345 

[4] CG2900 software reference manual CD0024290 

[5] CG2905 datasheet DM00039381 

[6] Getting started with CG2905 DM00049786 

[7] CG2905 hardware user manual 3_1424_CRH_109_1156 






About this document 

[8] CG2905 software reference manual DM00051436 

[9] CHATS user manual CD00283904 

[10] Test strategy for mobile applications CD00235172 

[11] Bluetooth ® , Wireless LAN coexistence CD00286791 






Preface 

2 Preface 

The CG2900 is a monolithic combo integrating GPS Measurement Engine (ME), 

Bluetooth® and Bluetooth® Low Energy (BLE), and FM TX/RX. It is manufactured on 

45 nm process CMOS technology. 

The CG2905 is a monolithic combo integrating GNSS Measurement Engine (ME), 

Bluetooth ® and Bluetooth ® Low Energy (BLE), and FM TX/RX. It is manufactured on 

40 nm process CMOS technology. 

Both devices are packaged in WLCSP package. These devices are optimized for best in 

class power consumption with a very high-level of integration, and require only a low 

number of external components making integration in mobile applications easy. 

This document forms the reference integration note for: 

Table 2 

Design RIN information 

Title 

Product name 

Bluetooth ® Qualified Design ID (QD ID) 

Bluetooth product type 

Product name 

Information 

CG2900, CG2905 

B017682 

BT 4.0 compliant Bluetooth ® component 

CG2900, CG2905 






Product overview 

3 Product overview 

The CG2900 and CG2905 are single-chip solutions that integrate GPS and GNSS 

respectively, Bluetooth ® , and FM TX/RX functionality on 45 nm and 40 nm process CMOS 

technology respectively. 

In addition to extremely low static power consumption, both the CG2900 and CG2905 

provide a multitude of system improvements, such as embedded SBC codec or on-chip 

RDS to help offload the host from these tasks, thereby reducing the overall system power 

consumption. With an extremely high level of integration, the CG2900 requires less than 

10 external components while the CG2905 requires only 12 external components 

(including filter and TCXO) allowing routing on low-cost PCBs, and placed on small formfactor 

boards for thin and sleek designs. 

3.1 Hardware features 

This section identifies the top-level hardware features of this design. 

3.1.1 Product type declaration 

This product is listed as Bluetooth ® Component Product. If either of these devices are 

used to implement Bluetooth ® in a product’s design, further qualification and listing is 

required in accordance with the Bluetooth ® Qualification Process (ref. PRD 2.0). Visit 

https://bluetooth.org/TPG/ to start new qualification process. 

3.1.2 Hardware overview 

Both the CG2900 and CG2905 are monolithic GPS (CG2900) or GNSS (CG2905), 

BT+BLE, and FM TX/RX controller in one WLCSP package and has a common HCI 

interface for all these subsystems. Each (CG2900 or CG2910) complete system is 

operated from a single 1.8 V nominal supply, from V BAT , or from a combination of these. 

Separate ground connections are provided to reduce parasitic coupling effects. 

The CG2900 and CG2905 combine: 

• A GPS and GNSS receiver respectively with its measurement engine. 

• A BT+BLE transceiver and core including a CVSD transcoder and supporting a wide 

band speech SBC transcoding, as well as A2DP SBC stereo encoding. 

• A FM TX/RX RDS radio with sound processing and RDS data handling. 

3.1.3 Standard operating conditions 

• Normal temperature: 25 °C 

• Operating ambient temperature range: -20 °C to +85 °C 

• Typical core and I/O voltage: 1.8 V 

• Core and I/O voltage range: 1.70 V to 1.95 V 

• V BAT range: 2.3 V to 4.8 V 







3.1.4 Application 

The CG2900 and CG2905 are designed and optimized for use in mobile applications, 

such as smart phones, PNDs, PDAs, and digital cameras that have strict constraints on 

footprint, power consumption, and battery life. 

The CG2900 and CG2905 are designed to ensure coexistence and simultaneous usage 

with other cellular radios, such as WCDMA, GSM, GPRS, EDGE, LTE, TDSCDMA, 

WiMAX, or WLAN. These devices deliver exceptional performances in these stringent 

environments for a better overall user experience. 







Figure 1 

Mobile phone – hardware overview 







3.1.5 Block diagram 

Figure 2 

CG2900 and CG2905 block diagrams 







3.1.6 Features 

• High co-existence and co-habitation performance with each subsystem working 

simultaneously at high performance 

• Small dimensions: 

- CG2900: 3.80 x 4.07 x 0.6 (mm) in 85-ball WLCSP package with 0.4 mm pitch 

- CG2905: 3.79 x 4.00 x 0.60 (mm) in 86-ball WLCSP package with 0.4 mm pitch 

• Minimal number of standard external components 

• Shared clock and supply inputs for all functions 

• Single-ended antenna ports 

• Support for 1.8 V and direct V BAT connection 

• Direct loop-through mode from FM RX audio to BT A2DP 

• Small application footprint on PCB: 

- CG2900: < 50 mm 2 with less than 10 externals components 

- CG2905: < 50 mm 2 with less than 12 externals components 

• Full compliance with Bluetooth ® specification version 4.0 (including Bluetooth ® low 

energy) 

3.1.7 Radio modules 

• Output power of up to 13 dBm 

• −92 dBm sensitivity in basic rate 

• Low power consumption: 

- CG2900: 124 µA (sniff), 12.8 mA (HV3) and 9.8 mA (2-EV3) in master modes 

- CG2905: 9 mA HV3 + Sniff Slave mode and 90 µA Sniff Slave mode 

3.1.8 Interfaces 

• System interfaces: 

- CG2900: UART, PCM, I2S, SPI, control interfaces, FM analog audio output, 

WLAN ePTA, and WiMAX PTA. 

- CG2905: UART, PCM, I2S, control interfaces, BT, and WLAN/WiMAX/LTE ePTA. 

• HCI commands to control all subsystems over the same shared UART interface. 

• Audio DSP: embedded BT wide band speech SBC codec, A2DP SBC stereo 

encoding, and L2CAP encapsulation to reduce host processing and power 

consumption. 







3.1.9 Application requirements 

Figure 3 

Mobile phone – software overview 

Figure 3 presents the software partitioning between the host and the CG2900 or CG2905 

sections. The GPS or GNSS, BT, and FM communicate with the host through the HCI 

interface. This HCI interface supports specific commands reference to command and 

transport layer specifications to support both GPS or GNSS and FM subsystem, next to 

the BT subsystem. 

Both CG2900 and CG2905 implement a common HCI interface to control the BT, FM, and 

GPS or GNSS functions, which supports the HCI UART transport layer protocol using: 

• BT SIG-standard commands for BT functions. 

• Vendor-specific commands for GPS or GNSS, FM, and BT functions. 

Details of the commands are documented in the software reference manual [10] and [11]. 

Bluetooth ® and Wireless LAN coexistence is also considered and demonstrated. 

Bluetooth ® , Wireless LAN coexistence [6] provides customers in-depth understanding of 

ST-Ericsson’s implementation to assist them in their product design. 

The CHATS software in the evaluation kit from ST-Ericsson assists customers in the 

evaluation of ST-Ericsson’s products. The CHATS user manual [4] provides a quick guide 

to start up the evaluation kit. 







3.1.10 Pin description 

The CG2900 datasheet [1], getting started guide [2], and hardware user manual [3] 

provide full description and definition to assist customers in the evaluation of the product. 

The CG2905 datasheet [5], getting started guide [6], and hardware user manual [7] 

provide full description and definition to assist customers in the evaluation of the product. 

These documents are available on request. 

3.1.11 Bill of material 

The CG2900 and CG2905 hardware manuals describe the product reference design and 

the bill of material [3]. 


3.1.12 Sample porting 

A comprehensive suite of software is provided with the CG2900 and CG2905 devices 

including drivers for Symbian/S60, Linux/Android and Windows Mobile, along with 

production test and engineering software utilities and tools. Complete cellular solution 

offering comes with both hardware and software packages that include modules that 

assist customers in the product development. 

3.1.13 Hardware and software reference platforms 

The CG2900 is qualified on a reference evaluation board [2], [3], and [10]. The CG2905 is 

qualified on a reference evaluation board [6], [7], and [10]. Turnkey platform references 

are available with full documentation from design to production. Training will be provided 

to assist customers in gaining competitive time-to-market. 







Contact information 

4 Contact information 

ST-Ericsson 

39 Chemin du Champ-des-Filles 

CH 1228 Plan-les-Ouates 

Tel: +41 22 930 27 27 

Fax: +41 22 929 29 00 

For more information on ST-Ericsson, visit http://www.stericsson.com/. 






Glossary 

Glossary 

A2DP 

BLE 

BOM 

BQE 

Advanced Audio 

Distribution Profile 

Bluetooth Low Energy 

Bill Of Material 

Bluetooth Qualification 

Expert 

ME 

PCB 

PCM 

PDA 

PND 

Measurement Engine 

PCM 

Pulse Code Modulation 

Personal Data Assistant 

Personal Navigation Device 

BT 

Bluetooth 

PTA 

Packet Transmit Arbiter 

CHATS 

CMOS 

Common Hosted 

Application Tool Software 

Complementary Metal 

Oxide Semiconductor 

QD 

RDS 

RIN 

Qualified Design 

Radio Data System 

Reference Integration Note 

CVSD 

DSP 

EDGE 

Continuously Variable 

Slope Delta 

Digital Signal Processing 

Enhanced Data rate for 

GSM Evolution 

RX 

SBC 

SIG 

SPI 

Receive 

Sub-Band Coding 

Special Interest Group 

Serial Peripheral Interface 

ePTA 

Enhanced Packet Traffic 

Arbitration 

TCXO 

Temperature Controlled 

Crystal Oscillator 

FM 

GNSS 

GPRS 

GPS 

GSM 

HCI 

Frequency Modulation 

Global Navigation Satellite 

System 

General Packet Radio 

Service 

Global Positioning System 

Global System for Mobile 

Communications 

Host Controller Interface 

TDSCDMA 

TX 

UART 

WCDMA 

WiMAX 

Time Division Synchronous 

Code Division Multiple 

Access 

Transmit 

Universal Asynchronous 

Receiver-Transmitter 

Wideband Code Division 

Multiple Access 

Worldwide Interoperability 

for Microwave Access, Inc. 

I2S 

ID 

L2CAP 

Inter-IC Sound 

Identifier 

Logical Link Control 

Adaptation Protocol 

WLAN 

WLCSP 

Wireless Local Area 

Network 

Wafer Level Chip Scale 

Package 

LTE 

Long Term Evolution

Reference integration note for CG2900, CG2905 - Bluetooth

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