
Advance Information
MMC2114 MMC2113 MMC2112 — Rev. 1.0
544
External Bus Interface Module (EBI)
MOTOROLA
External Bus Interface Module (EBI)
Table 20-5. Transfer Code Definitions
TC[2]
TC[1]
TC[0]
Transfer Type
00
0
User data access(1)
1. Except lrw accesses.
0
1
Reserved
01
0
User instruction access(2)
2. Except change of flow related instruction accesses, includes lrw accesses.
01
1
User change of flow instruction access(3)
3. Change of flow related instruction access for taken branches, jumps, and loopt instructions
(includes table accesses for jmpi, jsri).
10
0
Supervisor data access(1)
1
0
1
Supervisor exception vector access
11
0
Supervisor instruction access(2)
11
1
Supervisor change of flow instruction access(3)
Table 20-6. Processor Status Encoding
PST[3]
PST[2]
PST[1]
PST[0]
Internal Processor State
0
Execution stalled
0
1
Execution stalled
0
1
0
Execute exception
00
11
Reserved
0
1
0
Processor in STOP, WAIT, or DOZE state
0
1
0
1
Execution stalled
0
1
0
Processor in debug mode
01
11
Reserved
10
00
Launch instruction(1)
1. Except ldm, stm, ldq, stq, hardware accelerator, lrw, change of flow, rte, or rfi instructions.
1
0
1
Launch ldm, stm, ldq, or stq
1
0
1
0
Launch hardware accelerator instruction
1
0
1
Launch lrw
1
0
Launch change of program flow instruction
1
0
1
Launch rte or rfi
11
10
Reserved
1
Launch jmpi or jsri
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Freescale Semiconductor, Inc.
For More Information On This Product,
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