General Purpose Multi Media Controller. 1.1 Features

Transcription

1 FTDI Chip VM00C Datasheet Embedded Video Engine Credit Card Board General Purpose Multi Media Controller Introduction. Features The VM00C is a development module for FTDI s FT00, which is used to develop and demonstrate the functionality of the FT00 Embedded Video Engine, EVE. This module behaves as an SPI slave, and requires a SPI Master for proper microcontroller interfacing and system integration. VM00C modules support different LCD panel size options. Users can also connect to different LCD screens as long as they meet the FT00 technical specification and fit the VM00C LCD connector. VM00CA-D,./V micro-controller adaptor card with. LCD touch display VM00CA-D,./V micro-controller adaptor card with. LCD touch display VM00C0A-D,./V micro-controller adaptor card with.0 LCD VMFT00CA-N,./V micro-controller adaptor card, with. LCD connector but no display VMFT00CA-N,./V micro-controller adaptor card, with./.0 LCD connector but no display The VM00C utilises the FTDI FT00 Embedded Video Engine. Graphic, audio and touch features of the FT00 can be accessed with the VM00C. For a full list of the FT00 s features please see the FT00 datasheet. The VM00C has the following features: Ready to use LCD module Part types with LCDs supporting resistive touch with pressure sensing. On board LCD backlight LED Driver Supports mono audio output On board audio power amplifier and micro speaker Flexible power supply. Powering the VM00C using either a.mm power jack, SPI master connector or via USB Micro-B port V tolerant buffers when used with a V SPI Master. Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Future Technology Devices International Ltd, Unit, Seaward Place, Centurion Business Park, Glasgow G HH United Kingdom. Scotland Registered Company Number: SC0 Copyright Bridgetek Limited

2 Ordering Information Note that the kits below require a V/A power supply. It is NOT provided in the development kit, but is offered as an optional accessory, as is the USB to SPI cable, with the following part types: Part No. VM00CA-N VM00CA-N VM00CA-D VM00CA-D VM00C0A-D VA-PSU-UK VA-PSU-US VA-PSU-EU VA00A-SPI VA-FC-M-BKW VA-FC-M-BLW VA-FC-STYLUS Description Credit Card Size VM00C module, supports./v MCU Adapter Board, with FPC/FFC LCD connector. No display is provided. Credit Card Size VM00C module, supports./v MCU Adapter Board, with FPC/FFC 0 LCD. No display is provided. Credit Card Size VM00C module, supports./v MCU Adapter Board, with FPC/FFC LCD connector,. inch TFT LCD display panel preinstalled. Credit Card Size VM00C module, supports./v MCU Adapter Board, with FPC/FFC 0 LCD connector,. inch TFT LCD display panel preinstalled. Credit Card Size VM00C module, supports./v MCU Adapter Board, with FPC/FFC 0 LCD connector,.0 inch TFT LCD display panel preinstalled. Accessory - UK Model V/A USB Power Supply (Mfr # JX-B00C--B) Accessory - US Model V/A USB Power Supply (Mfr # JX-B00B--B) Accessory - EU Model V/A USB Power Supply (Mfr # JX-B00A--B) Accessory - High Speed Micro USB to SPI adapter for BASIC boards based on FTH MPSSE design Accessory - Flat USB A to Micro B Cable M- Black and White Accessory - Flat USB A to Micro B Cable M- Blue and White Accessory - Resistive Touch Screen Pen Stylus Table - Ordering information Copyright Bridgetek Limited

3 Table of Contents Introduction.... Features... Ordering Information... Hardware Description.... VM00C board.... Physical Descriptions..... PCB layout..... VM00C Connectors... Board Schematics... 0 Hardware Setup Guide.... Power Configuration.... MPSSE Setup.... Arduino Setup... Mechanical Dimensions.... VM00CA -. Dimensions.... VM00CA -. Dimensions.... VM00C0A -.0 Dimensions... Specifications.... Optical Specification... Contact Information... Appendix A - References... 0 Document References... 0 Appendix B - List of Figures and Tables... List of Figures... List of Tables... Appendix C Revision History... Copyright Bridgetek Limited

4 Hardware Description Please refer to section.. for connector settings. Some VM00C jumpers must be set to work properly with your system.. VM00C board Figure - VM00C board profile. display version Figure - - VM00C board profile. / display version Copyright Bridgetek Limited

5 The VM00C module is intended for direct use into existing applications that require a display. This module is suitable for interfacing with an external microcontroller that has a SPI Master channel. The VM00C module PCB comes in types,. inch as well as a./ inch model. The difference between the models is the flex cable receptacle of the LCD. The. inch LCD uses a pin receptacle, whereas the./ inch model uses a 0 pin receptacle. The main functions of the VM00C are as follows: Micro USB, SPI connector or -pin connector for power supply.v regulator : Takes V input and outputs.v for on-board circuits LCD touch screen panel LCD backlight driver. On board back light driver has over voltage protection (OVP). Part No OVP (v) Backlight drive current (ma) VM00CA-N 0 VM00CA-N VM00CA-D 0 VM00CA-D VM00C0A-D Table - LED backlight drive OVP and current V tolerant buffers between the SPI master interface and the Slave interface of the FT00 o SPI timing requirement can be referred to FT00 datasheet. The on board level convert buffers introduce additional delay. The actual maximum SPI clock frequency depends on the host system timing and connection cable length to VM00C. stage audio filter and power amplifier Ω speaker Audio line out option. Physical Descriptions.. PCB layout The VM00C module is. x.mm, four-layer printed circuit board. Board thickness is approximately.mm. Copyright Bridgetek Limited

6 Figure - - VM00C module top view,. inch display version.. VM00C Connectors Connectors and jumpers are described in the following sections. CN- -pin power connector pin connector for V/.V power input to the board. Alternative to Micro USB connector. Pin No. Name Type Description VCC P V or.v DC power supply P Ground Table - CN Pinout CN- Micro USB Receptacle This receptacle is strictly for V input to power the board. There is no USB Functionality Pin No. Name Type Description VBUS P V power supply NC NA No connection NC NA No connection NC NA No connection P Ground Table - CN Pinout J- LCD Flex Cable connector This connector is the interface between the FT00 IC and the LCD Module. Copyright Bridgetek Limited

7 Signal Pin No (. ) Pin No (./.0 ) Description LED K, LED Cathode LED A, LED Cathode General purpose output pin for LCD Display Enable, push-pull DISP output, /ma sink/source Control by writing to Bit of REG_GPIO register. LCD Horizontal Sync, push-pull HSYNC output, /ma sink/source LCD Vertical Sync, push-pull VSYNC output, /ma sink/source LCD Pixel Clock, push-pull DCLK 0 output, /ma sink/source LCD Data Enable, push-pull DE output, /ma sink/source Bit of Red RGB signals, pushpull output, /ma sink/source R R R R 0 R R Bit of Red RGB signals, pushpull output, /ma sink/source Bit of Red RGB signals, pushpull output, /ma sink/source Bit of Red RGB signals, pushpull output, /ma sink/source Bit of Red RGB signals, pushpull output, /ma sink/source Bit of Red RGB signals, pushpull output, /ma sink/source G G G G G Bit of Green RGB signals, push-pull output, /ma sink/source current Bit of Green RGB signals, push-pull output, /ma sink/source current Bit of Green RGB signals, push-pull output, /ma sink/source current Bit of Green RGB signals, push-pull output, /ma sink/source current Bit of Green RGB signals, push-pull output, /ma sink/source current Copyright Bridgetek Limited

8 Signal Pin No (. ) Pin No (./.0 ) Description G B 0 B B B B B 0 Bit of Green RGB signals, push-pull output, /ma sink/source current Bit of Blue RGB signals, pushpull output, /ma sink/source Bit of Blue RGB signals, pushpull output, /ma sink/source Bit of Blue RGB signals, pushpull output, /ma sink/source Bit of Blue RGB signals, pushpull output, /ma sink/source Bit of Blue RGB signals, pushpull output, /ma sink/source Bit of Blue RGB signals, pushpull output, /ma sink/source XP X +ve touch YM Y ve touch XM 0 X ve touch YP 0 Y +ve touch V,0,,, V Power,,0,,,,,,,,,,,, Ground NC,,,,0,,,,, No connect Table - J Pinout J - Selection between lineout or loop back into the power amplifier. Selection between audio lineout or loop back into the power amplifier. (Footprint only, JP next to J is connected by default for on board amplifier and on board mini speaker). If J is soldered and used for audio output selection, JP needs to be removed. Pin No. Name - Audio amp enabled - Audio amp mute, Audio lineout on pin Table - J Pin Options J SP+ Audio speaker +ve from the on-board amplifier. J SP- Audio speaker -ve from the on-board amplifier. J- SPI Interface Copyright Bridgetek Limited

9 This is the interface where the SPI control and data signals are routed. There are also power and ground pins on this interface. Note J is not soldered on the VM00C board by default. Pin No. Name Type Description SCLK I SPI Clock input MOSI I Master Out Slave in MISO O Master In Slave out CS# I Chip select, active low INT# OD Host interrupt open drain output, active low. On board kω pull-up to.v. PD# I Active low power down input. V P V power supply.v P.V power supply P Ground 0 P Ground Table - J Pinout JP- Audio Amplifier Power Select This jumper provides the option to select the power supply voltage for the on-board power amplifier. Pin No. Name - V selected - V selected Table - JP Pin options *This needs to be configured before audio can be heard JP On board amplifier enable Solder connection fitted by default JP - On board amplifier mute Solder connection not fitted by default SW Power source select Pin No. Name - Power from CN - Power from CN Table - JP Pin options Copyright Bridgetek Limited

10 Copyright Bridgetek Limited 0 VM00C Datasheet Board Schematics FT00_PD# FT00_INT# VCC A OE Y A Y OE OE Y A A Y OE 0 U LCX V FT00_SCK FT00_MOSI FT00_CS# FT00_MISO MISO CS# SCK VCC A OE Y A Y OE OE Y A A Y OE 0 U LCX PD# INT# V CS# MOSI INT# PD# MISO SCK MOSI AUDIO_L AUDIO_L AUDIO_SHDN# AUDIO_SHDN# V CS# AUDIO_L SCKL/SCK MISO/SDA MOSI/SA0 CS_n/SA GPIO0/SA GPIO VCCIO MODE 0 INT PD XTI XTO VCCV VCORE VCCV XP YP 0 XM YM BACKLIGHT DE VSYNC HSYNC DISP DCLK B 0 B B B B B G G G G 0 G G R R R R R R U FT00Q VCORE V R R R R R R G G G G G G B B B B B B DCLK DISP HSYNC VSYNC DE BCKL YM XM YP XP Y MHz C pf C pf AUDIO_L FT00_SCK FT00_MISO FT00_MOSI FT00_CS# R k C.uF C 0.uF V C.uF C 0.uF VCORE AUDIO_SHDN# FT00_PD# FT00_INT# R k R k R k LEDK R R R LEDA R R R G G G G G G B B B B B B R0 R G0 G B0 B YM XM YP XP DCLK DISP HSYNC VSYNC DE LED-K LED-K LED-A LED-A NC NC NC RESET SPENA SPCK SPDA HSYNC VSYNC DOTCLK NC NC VDD VDD NC NC NC NC NC XR YD XL DEN YU B0 B B B B B B B G0 G G G G G G G R0 R R R R R R R [Left] [Right] [Bottom] [Top] LCD AT0GT-0ED J 0.B-PBX V L NR0T0M C 0.uF R k C.nF D N R 0k/% VOUT VIN FB EN A SW P EP U MIC-YML C 0uF C0 0.uF R R LED Current Sense R.R :=0mA V LEDK LEDA BCKL C 0.uF V C 0.uF Figure - - VM00C (. Version)

11 Copyright Bridgetek Limited VM00C Datasheet FT00_PD# FT00_INT# VCC A OE Y A Y OE OE Y A A Y OE 0 U LCX V FT00_SCK FT00_MOSI FT00_CS# FT00_MISO MISO CS# SCK VCC A OE Y A Y OE OE Y A A Y OE 0 U LCX PD# INT# V CS# MOSI INT# PD# MISO SCK MOSI V CS# AUDIO_L SCKL/SCK MISO/SDA MOSI/SA0 CS_n/SA GPIO0/SA GPIO VCCIO MODE 0 INT PD XTI XTO VCCV VCORE VCCV XP YP 0 XM YM BACKLIGHT DE VSYNC HSYNC DISP DCLK B 0 B B B B B G G G G 0 G G R R R R R R U FT00Q VCORE V R R R R R R G G G G G G B B B B B B DCLK DISP HSYNC VSYNC DE BCKL YM XM YP XP Y MHz C pf C pf AUDIO_L FT00_SCK FT00_MISO FT00_MOSI FT00_CS# R k C.uF C 0.uF V C.uF C 0.uF VCORE AUDIO_SHDN# FT00_PD# FT00_INT# R k R k R k LEDK R R R LEDA R R R G G G G G G B B B B B B R0 R G0 G B0 B YM XM YP XP DCLK DISP HSYNC VSYNC DE VLED- VLED HSYNC VSYNC PCLK DISP NC VDD X Y X DE Y R0 R R R R R R R G0 G G G G G G G B0 B B B B B B B [Left] [Right] [Bottom] [Top] LCD AT0B-l J 0.B-0PBS V L NR0T0M C 0.uF R k C.nF D N R 0k/% VOUT VIN FB EN A SW P EP U MIC-YML C 0uF C0 0.uF R R LED Current Sense R R=mA V LEDK LEDA BCKL C 0.uF V C 0.uF Figure - - VM00C/VM00C0 (. /.0 Version)

12 R k R k R k R k R k R0 k VM00C Datasheet V V V J 0 R R0 R R R R R R R R R R C C C C0 C C x0pf SCK MOSI MISO CS# INT# PD# SCK MOSI MISO CS# INT# PD# XL Shunt 0." To bypass.v regulator place jumper on pins J- and J-. SW VBUS CN VBUS D- D+ ID VBUS SS-0AP CN 0 V C 0.uF U V APEG- Vin Vout C C 0.uF 0uF USB Micro-B R 0R Figure - VM00C SPI Interface and IO Copyright Bridgetek Limited

13 VM00C Datasheet AUD_V U AUDIO_L AUDIO_L R R AUD_V C 0.uF A R OE A SNLVCGDBVR k A R0 C.nF k A R C.nF k A C.nF R 0k/% C R 0.uF 0k/% AUDIO_L_out JP JP AUD_V J Header 0." JP-Audio Amp. Enabled JP-Audio Amp. Mute AUDIO_SHDN# AUDIO_SHDN# R R R k R 0k/% C 0.uF C 0.uF TPA0A R 0k/% C0 uf A U IN- VDD IN+ VO+ VO- SHDN BYPASS SP+ SP- J J SP W/Ohm A A A A A XL Shunt.0mm V V JP FB 00R/A FB C 00uF C 0.uF AUD_V C 0nF Jumper.0mm 00R/A A Max peak current ~00mA for -ohm speaker Figure - VM00C Audio Copyright Bridgetek Limited

14 Hardware Setup Guide. Power Configuration There are methods of powering the VM00C board. ) USB Power(V) - Connect USB power through micro-usb cable to CN ) DC IN(V) - Connect V to CN ) DC IN(.V) - Connect.V to CN and short J pin and ) J Power(V) - Connect V to J pin ) *J Power(.V) - Connect.V to J pin and *Warning: Applying V accidently in this mode may cause permanent damage to the VM00C module. The following table summarise how to power the VM00C board using the various methods. Power Method CN CN J Pin J Pin SW USB Power V N/C N/C N/C Short pin - DC IN(V) N/C V N/C N/C Short pin - DC IN(.V) N/C.V SHORT Short pin - J Power(V) N/C N/C V N/C Any Position J Power (.V) N/C N/C.V Any Position Table - Board power configuration. MPSSE Setup To give a quick start with the VM00C development board, a Windows based Sample Application and demo applications are provided for users to experiment and experience the FT00 in the VM00C system. The following paragraphs provide a short description for development procedures. MPSSE is a multi-purpose synchronous serial engine interface available in some FTDI device (e.g. FTD, FTH, FTH and FTH). This engine allows users to bridge from a USB port on a PC to an I C or SPI interface. Sample code is available for driving the FT00 over this interface with a FTH device that has been integrated into a cable. This device is available in the VA00A-SPI board, or CHM-EDHSL-0(V) cable or CHM-DDHSL-0(.V) cable. VA00A-SPI is a MPSSE module accessory which can connect to the VM00C modules directly. Detailed information of VA00A-SPI can be found at: More information about MPSSE cables may be found at: In this section it is assumed the V version of the MPSSE cable (FTDI part no CHM-EDHSL-0) is used. In case a.v version of the MPSSE cable (FTDI part no CHM-DDHSL-0) is available, the setup is similar except for the power pin connection. Refer to table - for board power configuration. Copyright Bridgetek Limited

15 Figure - VM00C connects to PC via VA00A-SPI or MPSSE cable Hardware Setup VA00A-SPI Solder a 0 position single row pin header to J footprint of the VM00C board Connect VA00A-SPI to the VM00C module in the correct orientation. Connect USB cable (e.g. FTDI accessory VA-FC-M-BKW or VA-FC-M-BLW) from the VA00A-SPI to the PC USB host port. VA00A-SPI will supply power to VM00C after MPSSE driver is properly loaded and the USB host completed USB device configuration. Hardware Setup MPSSE Cable Solder a 0 position single row pin header to J footprint of the VM00C board Configure JP to either.v or V o Power Audio Amp by.v : JP pin and pin close o Power Audio Amp by V : JP pin and pin close (V board supply must be provided) Connect MPSSE leads to VM00C board s J( SPI interface) in accordance with Table - Plug MPSSE cable to PC USB port Software Setup Download PC Base MPSSE software. MPSSE cable and driver information can be found at Launch the Sample Application based on MPSSE from PC For more information on utilizing the VM00C development system with the MPSSE cable and Sample Application, refer to AN_. Further documentation associated with the VM00C development system and design flow at following link: can be found Copyright Bridgetek Limited

16 The FT00 Programming Guide describes the programming code and formats used by the FT00. The Sample Application is a well-formatted and documented program that illustrates the Programming Guide, and provides numerous design examples and reference code demonstrations. J Pin number J Signal MPSSE pin number MPSSE Signal MPSSE Lead Color SCK SK ORANGE MOSI DO YELLOW MISO DI GREEN CS# CS BROWN INT# GPIOL PURPLE PD# GPIOL BLUE V VCC RED.V Black Table - MPSSE cable (CHM-EDHSL-0) connection. Arduino Setup Sample codes and demo applications are provided to users who want to connect VM00C to a MCU. FTDI provides sample source code, Sample Application notes (AN_) and a ready to run demo based on Arduino platform. Further documentation associated with the VM00C development system and design flow can be found at Application note, AN_, provides a reference guide for utilizing the VM00C development systems with the Sample Application software and Arduino Pro platform. The FT00 Programming Guide describes the programming code and formats used by the FT00. The Sample Application is a well-formatted and documented program that illustrates the Programming Guide, and provides numerous design examples and reference code demonstrations. Copyright Bridgetek Limited

17 Mechanical Dimensions. VM00CA -. Dimensions Figure - VM00CA PCB dimensions Copyright Bridgetek Limited

18 Figure - VM00CA Display dimensions Copyright Bridgetek Limited

19 . VM00CA -. Dimensions Figure - VM00CA PCB dimensions Copyright Bridgetek Limited

20 Figure - VM00CA Display dimensions Copyright Bridgetek Limited 0

21 . VM00C0A -.0 Dimensions Figure - VM00C0A PCB dimensions Copyright Bridgetek Limited

22 Figure - VM00C0A Display dimensions Copyright Bridgetek Limited

23 Specifications. Optical Specification Table - -. TFT Optical specification Table - -. TFT Optical Specification Copyright Bridgetek Limited

24 Table - - TFT Optical Specification Copyright Bridgetek Limited

25 Contact Information Head Quarters Singapore Branch Office Taipei, Taiwan Bridgetek Pte Ltd Paya Lebar Road, #0-0 Singapore 000 Tel: + Fax: + 0 Bridgetek Pte Ltd, Taiwan Branch Floor, No., Sec., Nei Hu Road, Nei Hu District Taipei Taiwan, R.O.C. Tel: + () Fax: + () (Sales) sales.apac@brtchip.com (Sales) sales.apac@brtchip.com (Support) support.apac@brtchip.com (Support) support.apac@brtchip.com Branch Office - Glasgow, United Kingdom Branch Office Vietnam Bridgetek Pte. Ltd. Unit, Seaward Place, Centurion Business Park Glasgow G HH United Kingdom Tel: + (0) Fax: + (0) Bridgetek VietNam Company Limited Lutaco Tower Building, th Floor, A Nguyen Van Troi, Ward, Phu Nhuan District, Ho Chi Minh City, Vietnam Tel : 0 Fax : 0 (Sales) sales.emea@brtichip.com (Sales) sales.apac@brtchip.com (Support) support.emea@brtchip.com (Support) support.apac@brtchip.com Web Site Distributor and Sales Representatives Please visit the Sales Network page of the Bridgetek Web site for the contact details of our distributor(s) and sales representative(s) in your country. System and equipment manufacturers and designers are responsible to ensure that their systems, and any Future Technology Devices International Ltd (FTDI) devices incorporated in their systems, meet all applicable safety, regulatory and system-level performance requirements. All application-related information in this document (including application descriptions, suggested FTDI devices and other materials) is provided for reference only. While FTDI has taken care to assure it is accurate, this information is subject to customer confirmation, and FTDI disclaims all liability for system designs and for any applications assistance provided by FTDI. Use of FTDI devices in life support and/or safety applications is entirely at the user s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. This document is subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Neither the whole nor any part of the information contained in, or the product described in this document, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder. Future Technology Devices International Ltd, Unit, Seaward Place, Centurion Business Park, Glasgow G HH, United Kingdom. Scotland Registered Company Number: SC0 Copyright Bridgetek Limited

26 Appendix A - References Document References For module documentations, please refer to URL below: FT00 datasheet: DS_FT00_Embedded_Video_Engine FT00 software programming guide: FT00_Programmer_Guide FT00 sample application notes: AN VM00CB_SampleAPP_PC_Introduction AN VM00CB_SampleAPP_Arduino_Introduction CHM-DDHSL-0 datasheet: Dxx Programmers Guide: df AN_0: Command Processor for MPSSE and MCU Host Bus Emulation Modes MCU_Host_Bus_Emulation_Modes.pdf Copyright Bridgetek Limited 0

27 Appendix B - List of Figures and Tables List of Figures Figure - VM00C board profile. display version... Figure - - VM00C board profile. / display version... Figure - - VM00C module top view,. inch display version... Figure - - VM00C (. Version)... 0 Figure - - VM00C/VM00C0 (. /.0 Version)... Figure - VM00C SPI Interface and IO... Figure - VM00C Audio... Figure - VM00C connects to PC via VA00A-SPI or MPSSE cable... Figure - VM00CA PCB dimensions... Figure - VM00CA Display dimensions... Figure - VM00CA PCB dimensions... Figure - VM00CA Display dimensions... 0 Figure - VM00C0A PCB dimensions... Figure - VM00C0A Display dimensions... List of Tables Table - Ordering information... Table - LED backlight drive OVP and current... Table - CN Pinout... Table - CN Pinout... Table - J Pinout... Table - J Pin Options... Table - J Pinout... Table - JP Pin options... Table - JP Pin options... Table - Board power configuration... Table - MPSSE cable (CHM-EDHSL-0) connection... Table - -. TFT Optical specification... Table - -. TFT Optical Specification... Table - - TFT Optical Specification... Copyright Bridgetek Limited

28 Appendix C Revision History Document Title: Document Reference No.: Clearance No.: Product Page: Document Feedback: VM00C Datasheet BRT_00000 BRT#00 Send Feedback Revision Changes Date Version.0 Initial Release 0-0- Version. Version. Added Section Mechanical Dimensions of PCBs and displays Updated the optical characteristics for the. and displays Dual branding to reflect the migration of the product to the Bridgetek name logo changed, copyright changed, contact information changed Copyright Bridgetek Limited