Freescale Semiconductor e200z3 Reference Manual page 289

Table 7-15. Descriptions of Processor State Signals (continued)
Signal I/O
p_brstat[0:1] O Branch prediction status. Indicates the status of a branch prediction prefetch. Such prefetches are
performed for branch target buffer (BTB) hits with predict taken status to accelerate branches.
p_s1stat[0:1] S1 prefetch status
0x Default (no branch-predicted taken prefetch)
10 Branch-predicted taken prefetch resolved as not taken
11 Branch-predicted taken prefetch resolved as taken
Timing Synchronous with m_clk , so the indicated status may not apply to a current bus transfer.
p_mcp_out O Processor machine check. Indicates whether a machine check condition has caused a syndrome bit to be
set in the machine check syndrome register (MCSR).
State
Meaning
p_chkstop O Processor checkstop. Asserted by the processor when a checkstop condition has occurred and the CPU
has entered the checkstop state.
State
Meaning
1
As reflected on the cpu_dbgack internal state signal
2
Except rfi, rfci, rfdi, lmw, stmw, lwarx, stwcx., isync, isel, se_rfi, se_rfci, se_rfdi, e_lmw, e_stmw, se_isel, and change
of flow instructions
3
s: instruction size, 0 = 32 bit, 1 = 16 bit.
m: 0 for Book E page, 1 for VLE page
Table 7-16 describes power management and other external control logic functions.
Table 7-16. Descriptions of Power Management Control Signals
Signal I/O
p_halt I Processor halt request. Used to request that the processor enter the halted state.
State Asserted—Requests the processor to enter halted state.
Meaning Negated—No request is being made for the processor to enter halted state.
p_halted O Processor halted. The active-high p_halted output signal indicates that the processor entered the halted state.
State Asserted—The processor is in halted state.
Meaning Negated—The processor is not in halted state.
p_stop I Processor stop request. The active-high p_stop input signal requests that the processor enter the stopped
state.
State Asserted—Requests the processor to enter stopped state.
Meaning Negated—No request is being made for the processor to enter stopped state.
p_stopped O Processor stopped. The active-high p_stopped output signal indicates that the processor entered the stopped
state.
State Asserted—The processor is in stopped state.
Meaning Negated—The processor is not in stopped state.
Freescale Semiconductor
Asserted—A machine check condition caused an MCSR bit to be set.
Negated—No machine check condition exists that would set an MCSR bit.
Asserted—The processor has indicated a checkstop condition.
Negated—The processor has not indicated a checkstop condition.
e200z3 Power Architecture Core Reference Manual, Rev. 2
Signal Description
Signal Description
External Core Complex Interfaces
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