USB Low-Full-High Speed Peripherals

Hi

We have been performing some tests under Linux with the CY7C65215A running in i2c master mode.

When no receiver is present with the transmitted address or the receiving device is busy and unable to respond so a NACK occurs that the CY7C65215A appears to be holding the SCL line low until a USB timeout occurs.

Would you please advise how to overcome this issue?  We are running under Linux.

Thanks

Malcolm

Hi

Would you please advise if there is a Linux solution for the CY7C65215A Errata 5 - I2C Reads are slower when USB-Serial is configured as I2C Master?

The workaround provided lists a windows solution only.

https://community.cypress.com/t5/Knowledge-Base-Articles/Reduce-Delay-Observed-During-I2C-Read-Operations-In-USB-Serial/ta-p/259117

Thanks

Malcolm

Hi

I have a question about the ATA standards supported by theI have a question about CY7C68300C-56LTXC

Qestion1
I use the IF below. Is there a compatibility issue?
・ ATA3
-ATAPI command: Compliant with SFF-8020 Rev2.6 and SFF-8090 Rev0.99 specifications
・ Transfer mode:
PIO mode 0,1,2,3,4
Single Word mode 0,1,2
Multi Word mode 0,1,2

I checked the data sheet, but some modes are not supported.
Should we determine in the system that an unsupported mode is needed?
CY7C68300C-56LTXC datasheet
https://www.cypress.com/file/39151/download

Qestion2
CY7C68300C-56LTXC The following signals are not supported.
・ DASP
・ PDIAG
・ CSEL

Does CY7C68300C-56LTXC support only one ATA device?
Is the above signal unnecessary if there is only one ATA device?

junya

Hi

Does the CY7C65215A Linux API provide a method for i2c stuck bus recovery?  i.e. if a device connected to the master is holding the SDA line low can the CY7C65215A clock out the slave device so that it releases SDA?

Thanks

Mal

What is the power consumption of the FX2LP18  when held in reset for both the three different supply inputs? I am working on a very power sensitive design and the USB will only be needed when powered externally. When in battery mode, I want to minimize the power consumption as much as possible by holding the part in reset (or even adding a power switch if necessary). The datasheet shows Isusp current, but it is not clear which power rail that is referring to. Also, it's not necessarily the same as when the part is in reset.

We are using a third-party configurable HID board which uses the CY7C64215. I would like to integrate this function onto our own board, which will need support for at least 5 years. Is the CY7C64215 still a good choice for this, or should we use a newer IC?

Our application is only 8 buttons and 2 analog inputs which need to be used as USB HID devices.

Thanks!

Our product based on cy7c68013a.

Most of them are Normally operating well. But some product did not be recognized about 2~3 times out of 10.

Power source, reset timing, i2c clk, data lines were good. However,there was someting very strange about i2c data voltage abnormal.

There was no pull up, or data transaction, but voltage level about 1.4v with pull down sometimes.(our voltage level 3.3v)

I haven't seen this symptom. Would you tell me how to debug this symptom? Wold you tell me how to solve this problem?