LTC6803-2 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC6803-2' PDF : 40 Pages View PDF
LTC6803-2/LTC6803-4
OPERATION
Revision Code
The diagnostic register group contains a 2-bit revision
code. If software detection of device revision is neces-
sary, then contact the factory for details. Otherwise, the
code can be ignored. In all cases, however, the values of
all bits must be used when calculating the packet error
code (PEC) byte on data reads.
Bus Protocols
There are 6 different protocol formats, depicted in Table 3
through Table 8. Table 2 is the key for reading the protocol
diagrams.
Table 2. Protocol Key
PEC Packet Error Code
Master-to-Slave
N
Number of Bits
Slave-to-Master
...
Continuation of Protocol
Complete Byte of
Data
Table 3. Broadcast Poll Command
8
8
Command
PEC
Poll Data
Table 4. Broadcast Read
8
8
8
…8
8
Command
PEC
Data Byte Low
… Data Byte High
PEC
A bus collision will occur if multiple devices are on the same serial bus.
Table 5. Broadcast Write
8
8
8
…8
8
Command
PEC
Data Byte Low
… Data Byte High
PEC
Table 6. Address Poll Command
4
4
8
1000
Address
PEC
8
8
Command
PEC
Poll Data
Table 7. Address Read
4
4
8
8
8
8
…8
8
1000
Address
PEC
Command PEC
Data Byte Low
… Data Byte High
PEC
See Serial Command examples
Table 8. Address Write
4
4
8
8
8
8
…8
8
1000
Address
PEC
Command PEC
Data Byte Low
… Data Byte High
PEC
680324f
21
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