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UM0434 Datasheet(PDF) 334 Page - STMicroelectronics

Part # UM0434
Description  The primary objective of this user?셲 manual is to describe
PDF  390 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0434 Datasheet(HTML) 334 Page - STMicroelectronics

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UM0434
Nexus3 module
335/391
Table 212 shows error code encodings used when reporting an error through the Nexus3 error message.
Program trace–Indirect
branch history
message with
synchronization
6
6
Fixed
TCODE number = 29 (0x1D). See note below.
44
Fixed
Source processor identifier (multiple Nexus
configuration)
18
Variable
Number of sequential instructions executed since last
taken branch
1
32
Variable Full target address (leading zero (0) truncated)
132
Variable
Branch/predicate instruction history (see
Chapter 12.7.1: Branch trace messaging (BTM) on
page 350”).
Program trace–
Program correlation
message
6
6
Fixed
TCODE number = 33 (0x21)
44
Fixed
Source processor identifier (multiple Nexus
configuration)
44
Fixed
Event correlated with program flow. Refer to
Table 214.
18
Variable
Number of sequential instructions executed since last
taken branch
132
Variable
Branch/predicate instruction history (see
Chapter 12.7.1: Branch trace messaging (BTM) on
page 350”).
Table 211.
Public TCODEs supported (continued)
Message name
Minimum
Packet
Size (Bits)
Maximum
Packet
Size (Bits)
Packet
type
Packet description
Table 212.
Error code encodings (TCODE = 8)
Error code
(ECODE)
Description
00000
Ownership trace overrun
00001
Program trace overrun
00010
Data trace overrun
00011
Read/write access error
00101
Invalid access opcode (Nexus register unimplemented)
00110
Watchpoint overrun
00111
Program trace or data trace and ownership trace overrun
01000
Program trace or data trace or ownership trace and watchpoint overrun
01001–10111
Reserved
11000
BTM lost due to collision with higher priority message
11001–11111
Reserved



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