Data Trace - STMicroelectronics SPC572L series Reference Manual

e200z215An3 Nexus 3 Module
MCKO
MSEO_B
MDO[1:0] 00
TCODE = 28
source processor = 0000
# of sequential instructions = 0
relative address = 8'ha5
branch history = 8'b10100101 (w/ stop)
Figure 1173. Program Trace — Direct Branch (traditional) & Error messages
MCKO
MSEO_B
MDO[1:0]
MCKO
MSEO_B
MDO[1:0]
00 11 00 00 00 01 10 11 00 11 10 10 11
66.13

Data Trace

This section deals with the Data Trace mechanism supported by the Nexus 3 module. Data
Trace is implemented via Data Write Messaging (DWM) and Data Read Messaging (DRM),
as per the IEEE-ISTO 5001 standard.
1960/2058
Figure 1172. Program Trace — Indirect Branch message (history)
11 01 00 00
Direct Branch
11 00 00 00
DBM:
TCODE = 3
source processor = 0000
# of sequential instructions = 3
Figure 1174. Program Trace — Indirect Branch w/ Sync message
TCODE = 12
source processor = 0000
# of sequential instructions = 1
full target address = 32'hdeadface
00 01 01
00 11 00 00
Error:
TCODE = 8
source processor = 0000
error code = 1 (queue overrun — BTM only)
DocID027809 Rev 4
10 10 01 01
Error
10 00 00 00
11 01 11 10 10 10 11 01 11 00
RM0400
10 10 00
01 00 00