TN_125 FT2232H Errata Technical Note Document Reference No.: FT_000344 Version 1.0 Issue Date: 2010-11-05 The intention of this errata technical note is to give a detailed description of known functional or electrical issues with the FTDI FT2232H devices. The current revision of the FT2232H is revision C, released March 2010. Future Technology Devices International Limited (FTDI) Unit1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom Tel.: +44 (0) 141 429 2777 Fax: + 44 (0) 141 429 2758 E-Mail (Support): [email protected] Web: http://www.ftdichip.com Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 TABLE OF CONTENTS 1 FT2232H Revision .................................................................................. 2 2 Errata History Table – Functional Problems........................................ 3 2.1 3 Functional Problems of FT2232H ......................................................... 4 3.1 Revision A ............................................................................................................ 4 3.1.1 Error reading EEPROM Interface ............................................................................................ 4 3.1.2 Error reading internal FIFO in 245 Synchronous FIFO mode ................................................. 4 3.1.3 3 Phase clocking in MPSSE mode incorrect ........................................................................... 5 3.2 3.2.1 3.3 3.3.1 4 Errata History Table – Electrical and Timming Specification Deviations. ...... 3 Revision B ............................................................................................................ 5 Wait on IO1 not functioning in CPU Emulation mode.............................................................. 5 Revision C ............................................................................................................ 6 Double bytes read in CPU Emulation mode ............................................................................ 6 Electrical and Timing specification deviations of FT2232H ............... 7 4.1 4.1.1 Revision A ............................................................................................................ 7 Suspend Timer Failure ............................................................................................................ 7 5 FT2232H Package Markings.................................................................. 8 6 Contact Information............................................................................... 9 Appendix C – Revision History ................................................................. 11 Copyright © 2010 Future Technology Devices International Limited 1 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 1 FT2232H Revision FT2232H part numbers are listed in Table 1. The letter at the end of date code identifies the device revision. The current revision of the FT2232H is revision C, released March 2010. At the time of releasing this Technical Note there are one known issues with this silicon revision. A workaround is provided for this issue. Part Number Package FT2232HL 64 Pin LQFP FT2232HQ 64 Pin QFN Table 1 FT2232H Part Numbers This errata technical note covers the revisions of FT2232H listed in Table 2. Revision Notes A First device revision B Second device revision C Third device revision Table 2 FT2232H Revisions Copyright © 2010 Future Technology Devices International Limited 2 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 2 Errata History Table – Functional Problems Functional Problem Short description Errata occurs in device revision FT2232H Error reading EEPROM interface A FT2232H Error reading internal FIFO in 245 Synchronous FIFO mode A FT2232H 3 Phase clocking in MPSSE mode incorrect A FT2232H Wait on IO1 not functioning in CPU Emulation mode A, B FT2232H Double bytes read in CPU Emulation mode A, B, C 2.1 Errata History Table – Electrical and Timming Specification Deviations. Deviations Short description Errata occurs in device revision The USB specification requires a Suspend timer failure (USB maximum time to suspend of Chapter 9 Compliance) 3.125ms. The device takes upto A, B 4ms to suspend. Copyright © 2010 Future Technology Devices International Limited 3 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 3 Functional Problems of FT2232H 3.1 Revision A 3.1.1 Error reading EEPROM Interface Introduction: The FT2232H uses an external EEPROM to store USB descriptors. These descriptors must be correctly read for the device to be properly identified and configured. Problem: There is an issue that under the right conditions the internal address counter can increment by 2 (incorrectly). This appears as though the data read from the EEPROM has missed a byte. Workaround: There are no known workarounds available. This issue is corrected at silicon revision B. Package specific: The effected packages are listed in Table 3. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 3 3.1.2 Error reading internal FIFO in 245 Synchronous FIFO mode Introduction: The FT2232H uses an internal FIFO to store received data from the synchronous FIFO interface. This FIFO is addressed one byte at a time. Problem: There is an issue that under the right conditions the internal address counter can increment by 2 (incorrectly). This appears as though the data read from the FIFO has missed a byte. Workaround: There are no known workarounds available. This issue is corrected at silicon revision B. Copyright © 2010 Future Technology Devices International Limited 4 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 Package specific: The effected packages are listed in Table 4. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 4 3.1.3 3 Phase clocking in MPSSE mode incorrect Introduction: The FT2232H introduced a new function to the MPSSE mode called 3 phase clocking to allow data to be clocked on both edges. Problem: 3 Phase clocking was not being enabled. Workaround: There are no known workarounds available. This issue is corrected at silicon revision B. Package specific: The effected packages are listed in Table 5. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 5 3.2 Revision B 3.2.1 Wait on IO1 not functioning in CPU Emulation mode Introduction: The FT2232H has a “Wait On IO” feature in CPU mode to allow the processor to stop until the IO pin changes state. Problem: The Wait on IO is supposed to be routed to IO1. It is not. Workaround: There are no known workarounds available. This issue is corrected at silicon revision C. Copyright © 2010 Future Technology Devices International Limited 5 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 Package specific: The effected packages are listed in Table 3. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 6 3.3 Revision C 3.3.1 Double bytes read in CPU Emulation mode Introduction: The FT2232H has a CPU Emulation mode for transferring data. Problem: When reading a byte of data in CPU emulation mode the data is repeated. That is each byte of data is returned twice. Workaround: Switch off the divide by 5 clock divisor to resolve this problem (Command $8A) Package specific: The effected packages are listed in Table 7. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 7 Copyright © 2010 Future Technology Devices International Limited 6 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 4 Electrical and Timing specification deviations of FT2232H 4.1 Revision A 4.1.1 Suspend Timer Failure Introduction: The FT2232H has the ability to be put into suspend by the host to conserve power usage. Problem: The USB specification chapter 9 compliance tests require the device to go into suspend within 3.125ms. The device is taking upto 4ms to enter suspend state. Workaround: There are no known workarounds available. This issue is corrected at silicon revision C. Package specific: The effected packages are listed in Table 8. Package Applicable (Yes/No) FT2232HL Y FT2232HQ Y Table 8 Copyright © 2010 Future Technology Devices International Limited 7 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 5 FT2232H Package Markings FT2232H is available in a RoHS Compliant package, 64 pin LQFP and 64 pin QFN. An example of the markings on the package is shown in Figure 3-1. Figure 5-1 Package Markings – FT2232HQ Figure 5-2 Package Markings – FT2232HL Copyright © 2010 Future Technology Devices International Limited 8 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 6 Contact Information Head Office – Glasgow, UK Future Technology Devices International Limited 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 E-mail (Sales) [email protected] E-mail (Support) [email protected] E-mail (General Enquiries) [email protected] Web Site URL http://www.ftdichip.com Web Shop URL http://www.ftdichip.com Branch Office – Taipei, Taiwan Future Technology Devices International Limited (Taiwan) 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 E-mail (Sales) [email protected] E-mail (Support) [email protected] E-mail (General Enquiries) [email protected] Web Site URL http://www.ftdichip.com Branch Office – Hillsboro, Oregon, USA Future Technology Devices International Limited (USA) 7235 NW Evergreen Parkway, Suite 600 Hillsboro, OR 97123-5803 USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-Mail (Sales) [email protected] E-Mail (Support) [email protected] E-Mail (General Enquiries) [email protected] Web Site URL http://www.ftdichip.com Branch Office – Shanghai, China Future Technology Devices International Limited (China) Room 408, 317 Xianxia Road, ChangNing District, ShangHai, China Tel: +86 (21) 62351596 Fax: +86(21) 62351595 E-Mail (Sales): [email protected] E-Mail (Support): [email protected] E-Mail (General Enquiries): [email protected] Web Site URL: http://www.ftdichip.com Copyright © 2010 Future Technology Devices International Limited 9 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 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. 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 preliminar y 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 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom. Scotland Registered Number: SC136640 Copyright © 2010 Future Technology Devices International Limited 10 Document Reference No.: FT_000344 TN_125 FT2232H Errata Technical Note Version 1.0 Clearance No.: FTDI# 187 Appendix C – Revision History Version 1.0 First Release 05/11/2010 Copyright © 2010 Future Technology Devices International Limited 11