TSS463-AA ATMEL Corporation, TSS463-AA Datasheet - Page 53
TSS463-AA
Manufacturer Part Number
TSS463-AA
Description
Van (ISO Standard 11519-3) Datalink Controller With Serial Interface.
Manufacturer
ATMEL Corporation
Datasheet
1.TSS463-AA.pdf
(60 pages)
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Linked Channels
Figure 36. Linkage Mechanism
This Message area sharing permits either to optimize the allocation of the 128 bytes of DATA, or to perform some special
communications between the different nodes of the network.
4205A–AUTO–03/03
DRAK
DRAK
Mess_Len = n+2
ID_Tag j (lsb)
ID_Tag i (lsb)
ID_Mask j (lsb)
ID_Mask i (lsb)
0x00
ID_Mask j (msb)
ID_Mask i (msb)
ID_Tag j (msb)
ID_Tag i (msb)
The linkage feature allows two channels to share the same Message area, the message
pointer and the message length assumes this property:
•
•
•
Only one level of linkage can be created. This means, (see Figure 36) a Channel k can
be linked to the Channel i but not to Channel j, already defined as linked to Channel i.
All the others can be different between the two channels, for example the ID_Tag.
The Channel j linked
EXT RAK RNW RTR
Mess_Ptr
EXT RAK RNW
i
Zero value as message length (M_L [4:0] - base_address + 0x03) declares the
channel linked to another channel.
The number of this other channel is defined in the message pointer field (M_P [6:0]
- base_address + 0x02).
The pointer and the length values for the Message area are defined only once, in
the register set of this other Channel.
CHER CHTx
CHER CHTx CHRx
to the Channel i
. . . .
CHRx
RTR
--- Message for Channels i & j ---
Message Status
DATA n
DATA 0
Channel i and j
share the same
Message area
TSS463-AA
53
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