USB low-full-high speed peripherals

Hi, Infineon:

Our board has a CY7C65215-32LTXI connected to BCM47768 through UART (GPIO pins 3,4,5,8)

We are using USB HUB PN# CYUSB3324-88LTXC on the board but  in case if we Assemble the PN# CYUSB3328-88LTXC on the same FP (pl. help to re-validate whether its FP compatible), then what other HW or FW changes would be needed to operate the HUB functionalities same as currently used PN# CYUSB3324-88LTXC?

Hello,

I have two questions related to getting the resistor strapping correct for my application, please. I do not plan on using the configuration utility to program the parts, so I want to make sure everything will behave as expected when using the default Mode 0 configuration on power up.

1. The datasheet does not specify the default states for the dedicated GPIO pins. I am presuming they are TRISTATE and that if I am not using them I can just tie them directly to GND. Please confirm. 

2. Mode 0 configures for 6-pin UARTs but my design only has RXD and TXD. Is it ok to leave the flow controls (i.e. CTS, RTS, DSR, DTR) as no connects in 6-pin UART mode or do I need to specifically tie them directly, or pull them up/down to specific active/inactive states.

Thank you in advance!

-Chris

Hi, 

We are validating RTS/CTS flow control of UART vendor mode on CYUSB236 EVK by sending a 7MB text file from SCB0 to SCB1. With referring to Cypress USB API document, we develop a program via Cypress Linux library to send, receive data, enable RTS/CTS flow control and register CTS notification callback function.

With RTS/CTS flow control enabled on both UART ports, the receiver(SCB1) showed some packets loss as transmitter(SCB0) just continuously sent data without knowing how to check CTS status.

We can’t find any Cypress document or sample codes of handling CTS via Cypress library on CYUSB236 or CY7C65215 website. 

Could you provide document or sample codes of implementing RTS/CTS flow control correctly via Cypress library to prevent packets loss on receiver ?

Best Regards,

Justy Huang