PGA460: PGA460 OWU timing requirement

user6060721

Expert 1015 points

Part Number: PGA460

Hi，

What are the timing requirements of OWU，is the same with USART asynchronous mode？

In the spec，there is only 19.2kbps and 115200bps.

When I use 86400bps，what is the timing requirement of tBIT.

Are there timing requirements of UART slew rate、signal rising time、falling time?

Thanks.

over 5 years ago

0 Akeem Whitehead over 5 years ago

TI__Mastermind 27950 points

user6060721,

Both USART asynchronous mode and OWU can be operated at a baud rate between 2.4 and 115.2kbps.

The t_bit_UART requirement for a 86.4kbps baud rate is 1/86.4k = 11.574us.

The timing requirements for the slew rate and rise/fall times have not been defined or characterized.

0 user6060721 over 5 years ago in reply to Akeem Whitehead

Expert 1015 points

Akeem Whitehead

I want to know the tBIT tolerance of 86.4kbps，min and max.

Thanks

0 Akeem Whitehead over 5 years ago in reply to user6060721

TI__Mastermind 27950 points

user6060721,

The tBit tolerance of the OWU bus was designed to match the LIN 2.1 Specification. See the LIN Specification Package Revision 2.1 document's section "6.5.3 SIGNAL SPECIFICATION" and the following sections for details on the equivalent timing and levels of the PGA460 OWU:

https://www.lin-cia.org/fileadmin/microsites/lin-cia.org/resources/documents/LIN-Spec_Pac2_1.pdf

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PGA460: PGA460 OWU timing requirement