VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 FTDI Chip VI800A-N485U Datasheet Plug in accessory for VM800P Embedded Video Engine Plus module 1 Introduction The VI800A-N485U is a plug in accessory for the VM800P Plus module, which is used to develop and demonstrate the functionality of the FT800 Embedded Video Engine, EVE. This module behaves as an SPI to RS485 bridge on the VM800P Plus module. 1.1 Features Connects to the VM800P Plus module using an SPI slave interface SPI slave interface is converted to RS485 interface 4 GPIO inputs and 4 GPIO outputs 8 LEDs to indicate the input and output status 3.3 V IO with 5 V tolerant buffers Screw connector to connect the RS485 signals, GPIO inputs and GPIO outputs IO interface to connect the RS485 signals, GPIO inputs and GPIO outputs Powered from the VM800P module 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 FTDI harmless from any and all damages, claims, suits or expense resulting from such use. VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 2 Clearance No.: FTDI#413 Ordering Information Part No. VI800A-N485U Description VI800A RS485 module, plug accessory for the VM800P Plus module Table 2-1 – Ordering information 2 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Table of Contents 1 Introduction ................................................................................... 1 1.1 Features ........................................................................................................ 1 2 Ordering Information ..................................................................... 2 3 Hardware Description ..................................................................... 4 3.1 VI800A-N485U module ................................................................................. 4 3.2 Physical Descriptions .................................................................................... 5 3.2.1 PCB Dimensions ........................................................................................ 5 3.2.2 VI800A-N485U Connectors ......................................................................... 7 3.2.3 VI800A-N485U Components ....................................................................... 9 4 Board Schematics ......................................................................... 11 5 Hardware Setup Guide .................................................................. 12 6 5.1 Power Configuration ................................................................................... 12 5.2 RS485 Interface connection ........................................................................ 12 Contact Information ..................................................................... 13 Appendix A – References....................................................................................... 12 Appendix B - List of Figures and Tables ................................................................. 13 Appendix C – Revision History ............................................................................... 14 3 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 3 Clearance No.: FTDI#413 Hardware Description Please refer to section 3.2.2 for connector settings. Some VI800A-N485U jumpers must be set to work properly with your system. 3.1 VI800A-N485U module Figure 3-1 – VI800A-N485U module The VI800A-N485U module is designed to connect directly with the VM800P Plus module. The main functions of the VI800A N485U are as follows: Plug in accessory board for the VM800P Plus module. Interface to the VM800P Plus board as a SPI slave device. Connects with an external RS485 interface. Supports 4 GPIO inputs. Supports 4 GPIO outputs. Contains 8 LEDs. Powered by the VM800P Plus board. 4 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 3.2 Physical Descriptions 3.2.1 PCB Dimensions The VI800A-N485U module PCB layout is illustrated in Figure 3-2 and Figure 3-3. 37.50 18.75 9.20 63.50 Figure 3-2 - VI800A-N485U module PCB Top view 4.35 8.50 57.50 Figure 3-3 - VI800A-N485U module PCB Bottom view 5 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Figure 3-4 - VI800A-N485U module PCB side view All dimensions are in mm 6 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 3.2.2 Clearance No.: FTDI#413 VI800A-N485U Connectors Connectors and jumpers are described in the following sections. CN1- SPI Interface This is the interface where the SPI control and data signals are routed. There are also power and ground pins on this interface. This interface is used to connect the VI800A-N485U board to the VM800P Plus board. Note: This connector should be connected to J6 of the VM800P plus board. Pin No. Name Type Description 1 SCK I SPI Clock input, 3.3V (5V tolerant) 2 MOSI I Master Out Slave in, 3.3V (5V tolerant) 3 MISO O Master In Slave out, 5V 4 SS# I SPI Chip select, active low, 3.3V (5V tolerant) 5 INT0 O Interrupt output active low, 3.3V 6 IO6 I Daughter reset input, active low , 3.3V (5V tolerant) 7 AD4 IO Address/Data Line 4 8 AD5 IO Address/Data Line 5 9 3V3 P 3.3V power supply 10 5V P 5V power supply 11 GND P Ground 12 RST# I Reset, active low 13 AD1 IO Address/Data Line 1 14 NC NA Not Connected 15 AD3 IO Address/Data Line 3 16 AD2 Table 3-1 – CN1 Pinout IO Address/Data Line 2 CN2- IO Interface(alternative to CN3) This is the interface where the RS485 connections, GPIO input and outputs are connected. There are also power and ground pins on this interface. Pin No. Name Type Description 1 3V3 P 3.3V power supply 2 5V P 5V power supply 3 I/P1 I Input 1 4 I/P2 I Input 2 5 I/P3 I Input 3 7 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Pin No. Name Type Description 6 I/P4 I Input 4 7 O/P1 O Output 1 8 O/P2 O Output 2 9 O/P3 O Output 3 10 O/P4 O Output 4 11 GND P Ground 12 GND P Ground 13 Rx+ I Receive Data non-inverting 14 Rx- I Receive Data inverting 15 Tx+ O Transmit Data non-inverting 16 TxTable 3-2 – CN2 Pinout O Transmit Data inverting CN3- External Screw Connector(alternative to CN2) This is the interface where the RS485 connections, GPIO input and outputs are connected. There are also power and ground pins on this interface. Pin No. Name Type Description 1 5V P 5V power supply 2 Rx+ I Receive Data non-inverting 3 Rx- I Receive Data inverting 4 Tx+ O Transmit Data non-inverting 5 Tx- O Transmit Data inverting 6 GND P Ground 7 I/P1 I Input 1 8 I/P2 I Input 2 9 I/P3 I Input 3 10 I/P4 I Input 4 11 O/P1 O Output 1 12 O/P2 O Output 2 13 O/P3 O Output 3 14 O/P4 O Output 4 15 GND Table 3-3 – CN3 Pinout P Ground 8 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 JP1- Output Drive Select This jumper provides the option to select the power supply voltage for the inputs and outputs. Jumper position Description Short pin 1-2 3.3V selected Short pin 2-3 Table 3-4 – JP1 Pin options 5V selected (default) JP2- Duplex/Simplex Enable This jumper provides the option to enable simultaneous transmit and receive of data. Jumper position Description Short pin 1-2 Transmit and receive can be done simultaneously Short pin 2-3 Transmit and receive cannot be done simultaneously Table 3-5 – JP2 Pin options JP3- connect Rx+ to RxSolder connection not fitted by default JP4- connect Tx+ to TxSolder connection not fitted by default JP5- connect Rx+ to Tx+ Solder connection not fitted by default JP6- connect Rx- to TxSolder connection not fitted by default 3.2.3 VI800A-N485U Components U1 – SC16IS760 This converts the SPI signals from the VM800P Plus board to UART TTL signals. U4 – ZT3073LEEN This converts the UART signals from the TTL level to RS485 signal. LED1 – LED4 Indicates the status of GPIO inputs. Illuminate when the GPIO line is logic 0. 9 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 LED5 –LED8 Indicates the status of the GPIO outputs. Illuminate when the GPIO line is logic 0. 10 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 4 Clearance No.: FTDI#413 Board Schematics Figure 4-1 - VI800A-N485U Schematics 11 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 5 Clearance No.: FTDI#413 Hardware Setup Guide 5.1 Power Configuration The board is powered from the VM800P Plus board. The CN1 connector on the VI800A-N485U board should be connected to the J6 connector of the VM800P Plus board as shown in the Figure 5-1. Figure 5-1 - VI800A-N485U module connected to VM800P Plus module 5.2 RS485 Interface connection When the VI800A-N485U is connected to a RS485 device the following connection is used. The Tx+ signal on CN3 is connected to the Rx+ signal on the external RS485 device. The Tx- signal on CN3 is connected to the Rx- signal on the external RS485 device. The Rx+ signal on CN3 is connected to the Tx+ signal on the external RS485 device. The Rx- signal on CN3 is connected to the Tx- signal on the external RS485 device. The GND signal on CN3 is connected to the GND signal on the external RS485 device. The output from the external device is connected to the inputs I/P1, I/P2, I/P3 and I/P4 on the CN3. The input from the external device is connected to the outputs O/P1, O/P2, O/P3 and O/P4 on the CN3. The LEDs LED1 to LED8 are used to display the status of the inputs and outputs. This interface is used to interface the VM800P Plus module to the devices having RS485 and GPIO interfaces. 12 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 6 Clearance No.: FTDI#413 Contact Information Head Office – Glasgow, UK Branch Office – Tigard, Oregon, USA Unit 1, 2 Seaward Place, Centurion Business Park Glasgow G41 1HH United Kingdom Tel: +44 (0) 141 429 2777 Fax: +44 (0) 141 429 2758 7130 SW Fir Loop Tigard, OR 97223 USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) E-Mail (Sales) E-Mail (Support) E-Mail (General Enquiries) [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] Branch Office – Taipei, Taiwan Branch Office – Shanghai, China 2F, No. 516, Sec. 1, NeiHu Road Taipei 114 Taiwan , R.O.C. Tel: +886 (0) 2 8797 1330 Fax: +886 (0) 2 8751 9737 Room 1103, No. 666 West Huaihai Road, Changning District, Shanghai, 200052 China Tel: +86 (0)21 6235 1596 Fax: +86 (0)21 6235 1595 E-mail (Sales) E-mail (Support) E-mail (General Enquiries) E-mail (Sales) E-mail (Support) E-mail (General Enquiries) [email protected] [email protected] [email protected] [email protected] [email protected] [email protected] Web Site http://www.ftdichip.com/ Distributor and Sales Representatives Please visit the Sales Network page of the FTDI 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 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH, United Kingdom. Scotland Registered Company Number: SC136640 13 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Appendix A – References VM800P datasheet: VM800P Plus board FT800 datasheet: FT800_Embedded_Video_Engine FT800 software programming guide: FT800_Programmer_Guide FT800 sample application notes: AN_246_VM800CB_SampleAPP_Arduino_Introduction AN_275_FT800_Example_with_Arduino.pdf AN_318 Arduino Library for FT800 Series AN_330 VI800A_TTL_232U_N485U_ArduinoLibrary_Sample 12 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Appendix B - List of Figures and Tables List of Figures Figure 3-1 – VI800A-N485U module ............................................................................................................... 4 Figure 3-2 - VI800A-N485U module PCB Top view ....................................................................................... 5 Figure 3-3 - VI800A-N485U module PCB Bottom view ................................................................................. 5 Figure 3-4 - VI800A-N485U module PCB side view ...................................................................................... 6 Figure 4-1 - VI800A-N485U Schematics ....................................................................................................... 11 Figure 5-1 - VI800A-N485U module connected to VM800P Plus module ................................................. 12 List of Tables Table 2-1 – Ordering information ................................................................................................................... 2 Table 3-1 – CN1 Pinout .................................................................................................................................... 6 Table 3-2 – CN2 Pinout .................................................................................................................................... 7 Table 3-3 – CN3 Pinout .................................................................................................................................... 7 Table 3-4 – JP1 Pin options ............................................................................................................................ 8 Table 3-5 – JP2 Pin options ............................................................................................................................ 8 13 Copyright © 201422/10/2014 Future Technology Devices International Limited VI800A_N485U Datasheet Version 1.1 Document Reference No.: FT_000993 Clearance No.: FTDI#413 Appendix C – Revision History Document Title: DS_VI800A N485U Document Reference No.: FT_000993 Clearance No.: FTDI#413 Product Page: http://www.ftdichip.com/EVE.htm Document Feedback: Send Feedback Version 1.0 Initial Datasheet released 14/10/14 Version 1.1 Added height dimensions 20/10/14 14 Copyright © 201422/10/2014 Future Technology Devices International Limited