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TMS570LS3137: Significance of idle-line mode or address bit mode in SCI communication between two 3137 microcontrollers

satya sudhir sure
Intellectual 405 points
Part Number: TMS570LS3137

Hi,

We are using SCI for communication between two TMS570LS3137 microcontrollers.

Sender transmits some group of words (each word size is 4 bytes and it contains 1 byte of address) in a packet to receiver at certain period.

Is there any way in the receiver end to distinguish each word ?

Please let us know how idle-line mode or address bit mode helps in point to point communication in case if grouping of words is required ?

Regards,

Satya Sudhir

  • 0
    TI__Guru**** 196926 points
    Hello Satya,

    The SCI frame format consists of: 1 start bit + (1~8) data bit + (0~1) address bit + (0~1) parity bit + (1~2) stop bit. The maximum data length is 8 bit (1 byte or 1 char).

    You can use address bit to distinguish the first byte of the block. You can another way: multi-buffer mode to TX/RX 4-bytes data.