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Title
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Customer Rating
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Updated
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8051 interrupts and the USB interrupts
What are thedifferences between the 8051 interrupts and the USB interrupts?
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Not yet rated
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09/26/11 |
Purpose of the on board EEPROM on CY7C646xx
When working with CY7C646xx do you need to use an EEPROM ? What is the purpose of the on board EEPROM?
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Not yet rated
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09/26/11 |
Embedding Assembly Language In My 'C' Coded Firmware
How to embed assembly language in my 'c' coded firmware?
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Not yet rated
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09/26/11 |
CY4601 USB to Serial Reference Design Unable to Transmit or Receive Data
Why doesn't the CY4601 USB to Serial reference design transmit or receive data?
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Not yet rated
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09/26/11 |
Why doesn't the CY4601 USB to Serial reference design work will all RS-232 devices?
Why doesn't the CY4601 USB to Serial reference design work will all RS-232 devices?
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Not yet rated
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09/26/11 |
Pull up/down resistor on I/O pin of EZ-USB (AN21xx/FX/FX1/FX2/FX2LP)
The I/O pins of EZ-USB (AN21xx/FX/FX1/FX2/FX2LP) are configured as input when the device starts. I need to keep the I/O pin(s) in a known state. Can I connect a pull-up or pull-down resistor to the I/O pin(s)?
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(3/5) by 1
user
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09/26/11 |
Endpoint status of EZ-USB (AN21xx/FX/FX1/FX2/FX2LP)
How do I find the status of an endpoint of EZ-USB (AN21xx/FX/FX1/FX2/FX2LP) at a given instance of time? What will be status of the endpoint after the device comes out of suspend?
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Not yet rated
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09/25/11 |
Firmware security
In designing a USB device using EZ-USB(AN21xx/FX/FX1/FX2/FX2LP), we need to protect the firmware from being copied. Is it possible?
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Not yet rated
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09/25/11 |
Determine the number of pipes and pipe number.
What is a pipe? What determines the number of pipes and pipe number?
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Not yet rated
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09/25/11 |
Benefits of using a Cypress WirelessUSB module
What are the benefits of using a Cypress WirelessUSB module? Do I still need to undergo FCC testing?
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Not yet rated
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09/22/11 |
MA grant / certification ID for CYWM6934 WirelessUSB LS Module
What is the MA grant / certification ID for the CYWM6934 WirelessUSB LS Module?
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Not yet rated
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09/22/11 |
Coexisting with WiFi
1. How exactly does the CY4632 WirelessUSB LS KBM RDK cope with the situation where it is occupying a ISM channel when someone switches on a 802.11 network which occupies the same channel. Will the keyboard malfunction momentarily? Will it cause keyboard / mouse errors?
How long does it take from initially detecting interference on PERT to high or RSSI to re-locate to a clean channel and rebind? Will this have an effect on the keyboard or mouse operation being used?
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Not yet rated
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09/22/11 |
630xx/631xx Availability
Are the 630xx/631xx parts available?
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Not yet rated
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09/22/11 |
Send data OUT to the device
How to send data OUT to the device using the CY630xx/CY631xx?
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Not yet rated
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09/22/11 |
Mouse Sample Firmware for CY7C63001A-PC
Is there any sample mouse firmware for CY7C63001A-PC ?
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Not yet rated
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09/22/11 |
Testing USB devices without using a PC
How to test USB devices without using a PC ?
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Not yet rated
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09/22/11 |
USB HID Specification
Where can I find information on USB HID devices?
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Not yet rated
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09/22/11 |
IBIS models availablility for the CY7C630xx/631xx
Are IBIS models available for the CY7C630xx/631xx?
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(2/5) by 1
user
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09/22/11 |
Difference between the CY7C630xx and CY7C631xx parts?
What is the difference between the CY7C630xx and CY7C631xx parts?
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Not yet rated
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09/22/11 |
Porting firmware from CY7C63000/001 to EZ-USB
Is there an easy way to port a system from a CY7C63001 architecture to an EZ-USB architecture?
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Not yet rated
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09/22/11 |
Using the control endpoint (EP0) to transfer data OUT to the device
Using the 630xx, how to send data OUT to the device? The EP0 buffer size is 8-byte long, how to send more than 8 bytes of data OUT to the device?
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Not yet rated
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09/22/11 |
How does the lock bit of the CY7C63001a work?
All programmers from HI LO have something called a "Lock Bit" option for code protection. Is there such a feature in the HI LO programmer supported by Cypress for the M8 parts?
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Not yet rated
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09/22/11 |
CYASM Assembler User Guide
Where can i find CyASM and details about it?
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Not yet rated
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09/22/11 |
When I compile my firmware with the CYASM I get the following message: Error 'Jumps can not cross 4K boundary...' Why?
When I compile my firmware with the CYASM, I get the following message:
Error "Jumps can not cross 4K boundary..." Why?
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Not yet rated
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09/22/11 |
CYASM
What is CYASM?
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Not yet rated
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09/22/11 |
Current version of CYASM
What is the current version of CYASM?
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Not yet rated
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09/22/11 |
Bytecraft Compiler Error
I receive "Compiler error: Jumps cannot cross 4K boundary". How can we prevent this failure?
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Not yet rated
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09/22/11 |
What considerations should be given to the design in order to pass the in-rush current testing?
What considerations should be given to the design in order to pass the in-rush current testing?
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Not yet rated
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09/22/11 |
Best part to use for high volume 1.8" & 2.5" compact hard drive application
Can you please give me some guidance as to with part would be best for a customer to use for a 1.8" and 2.5" compact hard drive application?
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Not yet rated
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09/22/11 |
Incomplete data transfer
I'm transferring a large block of data that takes multiple transactions to complete. The data appears to transfer correctly but the host does not seem to receive the data. What could be the problem?
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Not yet rated
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09/22/11 |
Full-speed HID
Can I use a full-speed device in a HID application or is HID only supported for low-speed devices?
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Not yet rated
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09/22/11 |
Frameworks fw.c appnote?
Where can I find the documentation on the frameworks source file fw.c ?
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Not yet rated
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09/22/11 |
What endpoints are used by HID devices?
What endpoints are used by HID devices?
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Not yet rated
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09/22/11 |
Passive feed through for USB signals
Is it acceptable to have a circuit board act as a passive feed through for USB signals? Specifically, what we wish to do is to have two single USB "Type B" connectors adjacent to one another on one side of the board and a dual-row "Type A" connector on the other. Pin-for-pin connections exist as printed traces on the board but there is no filtering or electrical "buffering" on the board; the connections, therefore, are totally passive. Is this sort of passive pass-through acceptable?
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Not yet rated
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09/22/11 |
If I have done some modifications on the drivers (ezloader.sys ezusb.sys) can I change the version info. of the dri...
If I have done some modifications on the drivers (ezloader.sys, ezusb.sys), can I change the version info. of the drivers (can I change the company name, version number etc. and only keep the copyright as CYPRESS?). The derivative works should also include "CYPRESS" copyright?
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Not yet rated
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09/22/11 |
Boot load from EEPROM with a firmware larger than the internal memory of EZ-USB (AN21xx/FX/FX1/FX2/FX2LP)
EZ-USB (AN21xx/FX/FX1/FX2/FX2LP) while boot-loading from the EEPROM can write only to internal memory. How can I boot-load a firmware larger in size than the internal memory?
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Not yet rated
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09/22/11 |
SFRs bit-addressable?
Which SFRs are bit-addressable in Fx2LP?
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Not yet rated
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09/22/11 |
i'm trying to download a .bix file using the bulktest application (the host application in the kit) and it's not work...
I am trying to download a .bix file using the bulktest application (the host application in the kit) and it's not working. What should I do?
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Not yet rated
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09/22/11 |
Using a crystal with less tolerance than the data sheet still allows the I.C. to function. Why is tolerance specifi...
Using a crystal with less tolerance than the data sheet, still allows the I.C. to function. Why is tolerance specified at it level and why must it be used?
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Not yet rated
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09/22/11 |
Error when using a tape drive in WinME
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Not yet rated
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09/22/11 |
EZLoader Custom USB Firmware Loader Driver
What is the purpose of the Widget.inf?
What is the purpose of the Widget Firmware/Device Driver Update INF file?
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Not yet rated
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09/22/11 |
Password protection feature of Mass Storage
Which Cypress ATA/ATAPI bridge chips support password protection?
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Not yet rated
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09/22/11 |
Use of EA pin
What is the use of the EA pin with regards to the enumeration/firmware download process.
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Not yet rated
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09/22/11 |
EZ-USB tutorial.
Do you have any tutorials that can help me configure my setup and debug my code?
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Not yet rated
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09/22/11 |
Cannot build ezusb.sys because of driver build error
When trying to build the ezusb.sys file, error "don't know how to make 'C:\WINDDK\3790\lib\i386\free\usbd.lib'" is displayed? What is the work around for this error?
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Not yet rated
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09/22/11 |
Communicate with the I2C interface of the EZUSB parts
How does EZUSB communicate with I2C interface?What is the address that is used in the EZUSB_WriteI2C() routine?Where can I find the source code for this function?
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(5/5) by 1
user
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09/22/11 |
IO pins active with the monitor running after downloading a firmware program from Keil
After downloading a firmware program from the Keil IDE and it's running the little monitor routine, Which IO pins will be active with the monitor running?
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Not yet rated
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09/22/11 |
Debugger with AUTOPTR
I am using the debugger to step through the code which uses the AUTODATA to transfer data. I I see the value stored in AUTOPTR incrementing on each step of the code involving the AUTODATA read/write by 2 to 3 bytes at a time.Is it not supposed to increment ONLY when I read or write the AUTODATA register?
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Not yet rated
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09/22/11 |
Where is the data sheet for the AN21xx parts.
Data sheet for the AN21xx parts.
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Not yet rated
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09/22/11 |
Auto-pointer
Is it possible to configure the auto-pointer as to move 2 or 4 bytes a time and auto-increase accordingly as well?
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Not yet rated
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09/22/11 |