ATSHA204 ATMEL [ATMEL Corporation], ATSHA204 Datasheet - Page 50

• Manufacturer Part Number: ATSHA204
• Description: Atmel CryptoAuthentication
• Manufacturer: ATMEL [ATMEL Corporation]

8.10
Pause Command
All devices on the bus for which the configuration Selector byte does not match the input selector parameter will go into the
idle state. This command is used to prevent bus conflicts in a system that includes multiple ATSHA204 devices sharing the
same bus.
This command differs from the idle flag/sequence in that individual devices on the single pin bus may be selected to go into
the idle state, as opposed to the idle flag which causes all the CryptoAuthentication devices on the bus into the idle state.
If the EEPROM Selector byte does not match the input selector parameter, the device will immediately go to the idle state and
no result information will be available. If the input selector parameter does match the configuration selector byte, the device
returns a success code of 0x00.
The pause command cannot be used to put the devices into the sleep state.
Table 8-28. Input Parameters
Table 8-29. Output Parameter
Opode
Param1
Param2
Data
Name
Success
Name
PAUSE
Selector
Zero
-
Size
Size
1
1
1
2
0
Notes
If the command indicates that some other device should idle, the Atmel ATSHA204
returns a value of 0x00.
If this device goes to idle, no value is returned.
Notes
0x01
All devices that do not match this value go to idle state.
Must be 0x0000
-
Atmel ATSHA204 [DATASHEET]
8740D−CRYPTO−3/12
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