Datasheet

682
32133D–11/2011
UC3D
All aWire commands are described below, with a summary in table form.
31.4.7.1 AYA
This command asks the AW: “Are you alive”, where the AW should respond with an
acknowledge.
31.4.7.2 JTAG_ID
This command instructs the AW to output the JTAG idcode in the following response.
31.4.7.3 STATUS_REQUEST
Asks the AW for a status message.
0x82 HALT Issues a halt command to the device.
0x83 RESET Issues a reset to the Reset Controller.
0x84 SET_GUARD_TIME Sets the guard time for the AW.
Table 31-8. aWire Command Summary
COMMAND Instruction Description
Table 31-9. Command/Response Description Notation
Command/Response Description
Command/Response value Shows the command/response value to put into the command/response field of the packet.
Additional data Shows the format of the optional data field if applicable.
Possible responses Shows the possible responses for this command.
Table 31-10. AYA Details
Command Details
Command value 0x01
Additional data N/A
Possible responses
0x40: ACK (Section 31.4.8.1)
0x41: NACK (Section 31.4.8.2)
Table 31-11. JTAG_ID Details
Command Details
Command value 0x02
Additional data N/A
Possible responses
0xC0: IDCODE (Section 31.4.8.3)
0x41: NACK (Section 31.4.8.2)
Table 31-12. STATUS_REQUEST Details
Command Details
Command value 0x03
Additional data N/A
Possible responses
0xC4: STATUS_INFO (Section 31.4.8.7)
0x41: NACK (Section 31.4.8.2)