TSS463C ATMEL Corporation, TSS463C Datasheet - Page 43

• Manufacturer Part Number: TSS463C
• Description: Van Data Link Controller With Serial Interface
• Manufacturer: ATMEL Corporation

Figure 29. Message Status Updating
Message Data (String
Pointed by: Message
Pointer Register + 1)
7601B–AUTO–02/06
P: Producer
Data Frame
Data Frame
Frame Type
Immediate
Immediate
Deferred
Deferred
Reply
Reply
Reply
Reply
Note:
DATA0 is the first received (or transmitted) byte, DATAn is the last one.
Note:
Node x
- - -
I, C
I, C
I, P
C
P
P
7
I: Initiator
1.
1. If the length reserved (in the message length and status register) for an incoming
2. The Mailbox RAM area is a circular buffer. The next location after 0xFF is 0x80.
After IT ROK or RNOK. In case of IT RE, the values can be erroneous.
frame is 2 bytes greater or more, the TSS463C will write the 2 bytes of the CRC field
in the message string just after DATAn. Because the VAN frame does not contain a
message length, the only way for the component to know the length of the DATA field
is either the message length register value, or the EOD field detection. When the
reserved length is too large, at the moment when it detects the EOD, the TSS463C
has already written the 2 bytes of the CRC field, considering these bytes as normal
DATA.
Commu-
nication
- - -
6
Node A
- - -
C: Consumer
5
I, C
I, C
I, P
C
P
P
RAK
RAK
RAK
RAK
RAK
Message Status on Node A after IT(*)
- - -
4
DATAn
DATA0
RNW
RNW
RNW
RNW
RNW
previous values
- - -
3
RTR
RTR
RTR
RTR
RTR
- - -
Previous
Previous
2
Length
Length
Length
Value
Value
TSS463C
-- - -
1
- - -
0
43