SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 820
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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35.7.8.11
Figure 35-44. Response Data Length
820
820
SAM3X/A
SAM3X/A
Break
Sync
Response Data Length
Sync
Field
The LIN response data length is the number of data fields (bytes) of the response excluding the
checksum.
The response data length can either be configured by the user or be defined automatically by
bits 4 and 5 of the Identifier (compatibility to LIN Specification 1.1). The user can choose
between these two modes by the DLM bit of the LIN Mode register (US_LINMR):
Table 35-15. Response Data Length if DLM = 1
• DLM = 0: the response data length is configured by the user via the DLC field of the LIN
• DLM = 1: the response data length is defined by the Identifier (IDCHR in US_LINIR)
Mode register (US_LINMR). The response data length is equal to (DLC + 1) bytes. DLC can
be programmed from 0 to 255, so the response can contain from 1 data byte up to 256 data
bytes.
according to the table below. The DLC field of the LIN Mode register (US_LINMR) is
discarded. The response can contain 2 or 4 or 8 data bytes.
Identifier
IDCHR[5]
Field
0
0
1
1
Data
Field
User configuration: 1 - 256 data fields (DLC+1)
Identifier configuration: 2/4/8 data fields
IDCHR[4]
Data
Field
0
1
0
1
Data
Field
Response Data Length [bytes]
2
2
4
8
Data
Field
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
Checksum
Field
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