NXP Semiconductors MPC5566 - Tcodes Supported by NXDM

Nexus
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 25-85
25.17.5 TCODEs Supported by NXDM
The NXDM pins allow for flexible transfer operations via public messages. A TCODE defines the transfer
format, the number and/or size of the packets to be transferred, and the purpose of each packet. The
IEEE®-ISTO 5001-2003 standard defines a set of public messages. The NXDM block currently support
the public TCODEs seen in Table 25-56.
Table 25-56. Public TCODEs Supported
Message Name
Packet Size
Bits Packet
Name
Packet Type Packet Description
Min Max
Data Trace -
Date Write
Message
6 6 TCODE Fixed TCODE number = 5
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
3 3 DSZ Fixed Data size (refer to Table 25-58)
1 32 U-ADDR Variable Unique portion of the data write value
1 64 DATA Variable Data write value
Data Trace -
Data Read
Message
6 6 TCODE Fixed TCODE number = 6
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
3 3 DSZ Fixed Data size (refer to Table 25-58)
1 32 U-ADDR Variable Unique portion of the data read value
1 64 DATA Variable Data read value
Error Message 6 6 TCODE Fixed TCODE number = 8
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
5 5 ECODE Fixed Error code (refer to Table 25-57)
Data Trace -
Data Write
Message w/
Sync
6 6 TCODE Fixed TCODE number = 13 (0xD)
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
3 3 DSZ Fixed Data size (refer to Table 25-58)
1 32 F-ADDR Variable Full access address (leading zero (0) truncated)
1 64 DATA Variable Data write value
Data Trace -
Data Read
Message w/
Sync
6 6 TCODE Fixed TCODE number = 14 (0xE)
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
3 3 DSZ Fixed Data size (refer to Table 25-58)
1 32 F-ADDR Variable Full access address (leading zero (0) truncated)
1 64 DATA Variable Data read valued
Watchpoint
Message
6 6 TCODE Fixed TCODE number = 15 (0xF)
4 4 SRC Fixed Source processor identifier (multiple Nexus configuration)
4 4 WPHIT Fixed Number indicating watchpoint sources