Datasheet

Chapter 8 S12X Debug (S12XDBGV3) Module
MC9S12XE-Family Reference Manual Rev. 1.25
314 Freescale Semiconductor
8.3.2.4 Debug Control Register2 (DBGC2)
Read: Anytime
Write: Anytime the module is disarmed.
This register configures the comparators for range matching.
Table 8-12. TRANGE Trace Range Encoding
TRANGE Tracing Range
00 Trace from all addresses (No filter)
01 Trace only in address range from $00000 to Comparator D
10 Trace only in address range from Comparator C to $7FFFFF
11 Trace only in range from Comparator C to Comparator D
Table 8-13. TRCMOD Trace Mode Bit Encoding
TRCMOD Description
00 Normal
01 Loop1
10 Detail
11 Pure PC
Table 8-14. TALIGN Trace Alignment Encoding
TALIGN Description
00 Trigger at end of stored data
01 Trigger before storing data
10 Trace buffer entries before and after trigger
11 Reserved
Address: 0x0023
76543210
R0000
CDCM ABCM
W
Reset 00000000
= Unimplemented or Reserved
Figure 8-6. Debug Control Register2 (DBGC2)
Table 8-15. DBGC2 Field Descriptions
Field Description
3–2
CDCM[1:0]
C and D Comparator Match Control — These bits determine the C and D comparator match mapping as
described in Table 8-16.
1–0
ABCM[1:0]
A and B Comparator Match Control — These bits determine the A and B comparator match mapping as
described in Table 8-17.