AT88SA102S_11 ATMEL [ATMEL Corporation], AT88SA102S_11 Datasheet - Page 13

• Manufacturer Part Number: AT88SA102S_11
• Description: Atmel CryptoAuthentication Product Authentication Chip
• Manufacturer: ATMEL [ATMEL Corporation]

6.
Commands
The command packet is broken down in the following way:
If a command fails because the CRC within the block is incorrect or there is some other communications error then
immediately after t
of that byte will be all ones. In this situation, the system should re-transmit the command block including the proceeding
transmit flag – providing there is sufficient time before the expiration of the watchdog timeout.
If the opcode is invalid, one of the parameters is illegal, or the AT88SA102S is in an illegal state for the execution of this
command then immediately after t
packet. The value of that byte will be 0x0F. In this situation, the condition must be corrected before the (modified) command is
sent back to AT88SA102S.
If a command is received successfully then after the appropriate execution delay the system will be able to retrieve the output
block as described in the individual command descriptions below.
In the individual command description tables below, the size column describes the number of bytes in the parameter
documented in each particular row. The total size of the block for each of the commands is fixed, though that value is different
for each command. If the block size for a particular command is incorrect, the chip will not attempt the command execution
and return an error.
Byte
0
1
2-3
4 +
Name
Opcode
Param1
Param2
Data
PARSE
the system will be able to retrieve an error response block containing a single byte packet. The value
Meaning
The Command code
The first parameter – always present
The second parameter – always present
Optional remaining input data
PARSE
the system will be able to retrieve an error response block containing a single byte
Atmel AT88SA102S [DATASHEET]
8584G−CRYPTO−9/11
13