KEYSTONE 2 EVM UART1 CONNECTIONS

John Caffyn

The EVM technical reference manual states UART1 TXD is on expanssion header pin 93 and RXD is on pin 95. The circuit diagram shows the same but indicates that TXD is an input and RXD is an output. Following the circuit connection shows TXD connected to U51 as an input. Should pin 93 be RXD and pin 95 be TXD ?

over 10 years ago

0 Raja over 10 years ago

TI__Guru* 81335 points

Hi John,
Are your referring to K2H/K2L/K2E evm? Please do mention the board revision as well to support you better. Thank you.

0 John Caffyn over 10 years ago in reply to Raja

Prodigy 250 points

The board is a K2H rev 4.0, documents are K2H_K2EVM-HK_SCH_A104_Rev4_0.pdf and XTCIEVMK2X_Technical_Reference_Manual_Rev1_0.pdf from Advantech website.

0 Senthilkumar Srinivasan over 10 years ago in reply to John Caffyn

TI__Mastermind 43660 points

Hello John,

There is no problem in the pinout of expansion connector. Only the off page connectors direction need to be changed. EXP_UART1_TXD_3V3 should be OUT and EXP_UART1_RXD_3V3 should be IN.

The off page connectors direction are just representation only and it would not change the connections electrically.

Regards,

Senthil

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KEYSTONE 2 EVM UART1 CONNECTIONS