TSS461C datasheet(30/57 Pages) ATMEL

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TSS461C

4193G–AUTO–12/04

NRTR [3:0]:

Number of retries done successfully in transmission. In case of reception NRTR[3:0] is

undefined.

IDTR [3:0]:

Channel number that was successfully transmitted, received or exceeded its retry count.

Last Error Status Register

(0x07)

•

Read only register.

•

Default value after reset: 0

×00.

•

The Last Error Status Register contains the error code for the last transmission or

reception attempt. It is updated after each attempt, i.e. several error codes can be

reported during one single transmission (with several retries).

BOC: Buffer Occupied

•

When one channel configured in “Reply request” mode has its “received” bit set

when it attempts to transmit its request.

•

BOC with the link capability between two channels sharing the same received buffer

is set when one channel has already set its “received” bit in its “Message length and

status Channel register” and a receive is attempted on the other one.

BOV: Buffer Overflow

BOV indicates that the buffer length setup in the Channel Status Register was shorter

than the number of bytes received plus 1, therefore, some data got lost.

One: BOV active

Zero: BOV inactive

FCSE: Framing Check

Sequence Error

FCSE indicates a mismatch between the FCS received and the FCS calculated

One: FCSE active

Zero: FCSE inactive

ACKE: Acknowledge Error

ACKE indicates a physical violation or collision on ACK field of the frame when the

TSS463 is produced.

One: ACKE active

Zero: ACKE inactive

7654

3210

BOC

BOV

FCSE

ACKE

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