
MOTOROLA
Chapter 8. Signal Descriptions
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Signal Descriptions
8.3.10.3.5 True Little-Endian Mode (core_tle)—Input
Following are the state meaning and timing comments for the core_tle input on the G2_LE
core.
State Meaning
Asserted—Causes MSR[LE], MSR[ILE], and HID2[LET] to be
initialized to ones at core_hreset. See Table 2-8 for more information
on the operation of the core when HID2[LET] = 1.
Negated—Causes MSR[LE], MSR[ILE], and HID2[LET] to be
initialized to zeros at core_hreset.
Timing Comments
Assertion/Negation—This signal is sampled during assertion of
core_hreset and must be stable five cycles before the negation of
core_hreset as defined in the hardware specification.
8.3.10.3.6 System Version Register (core_svr[0:31])—Input
Following are the state meaning for the core_svr[0:31] inputs on the G2_LE core.
State Meaning
Asserted/Negated—Identify the system version and revision level of
the system on a chip (SOC) level of integration. The value of these
signals is loaded into the system version register (SVR) at the
negation of core_hreset. For further detailed description of the
associated register, see Section 2.1.2.12, “System Version Register
(SVR)—G2_LE Only.”
Timing Comments
Assertion/Negation—These signals are sampled during assertion of
core_hreset and must be stable five cycles before the negation of
core_hreset as defined in the hardware specification.
8.3.11 Processor Status Signals
Processor status signals indicate the state of the processor. This includes the memory
reservation, machine quiesce control, time base enable, and core_tlbisync signals.
8.3.11.1 Quiescent Acknowledge (core_qack)—Input
Following are the state meaning and timing comments for the core_qack input.
State Meaning
Asserted—Indicates that all bus activity that requires snooping has
terminated or paused, and that the core may enter the quiescent (or
low-power) state.
Negated—Indicates that the core may not enter a quiescent state and
must continue snooping the bus.
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