NXP Semiconductors MPC5644A, Reference Manual, Page: 929 / 1735

Enhanced Time Processing Unit (eTPU2)
MPC5644A Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor 929
Semaphore condition SMLCK always indicates if a semaphore is locked for the engine, resolving as false
before any lock attempt. For each trial, the SMLCK flag is updated. The SMLCK value set in one thread
is not meaningful to the other. After a free, the SMLCK condition tests as false until a new lock attempt
on the same thread.
Branch conditions are selected through instruction fields BCC and BCF (see Section ,
Conditional/Unconditional branch ).
24.5.9 Microinstruction set
Each microinstruction can execute up to three microoperations in parallel. Microinstructions are grouped
into formats, and there are four types of
microoperations :
• ALU/MDU Operations
• SPRAM Operations
• Channel Configuration/Control Operations
• Flow Control Operations
Each microinstruction format is defined by a set of microinstruction fields, which determine the
operations, each belonging to one of the groups above (there may be several in one group). Complete
microinstruction formats are shown in
Section 24.5.9.7, Microinstruction formats .
Parallelism conflicts may arise when two operations are executed in the same microinstruction. These
situations are explained in
Section 24.5.9.6, Microinstruction parallelism issues .
MRLA Match A Recognition Latch These flags reflect the selected channel (CHAN)
see
Section 24.5.5.2.1, MRLA/B – Match Recognition
Latches , and Section 24.5.5.3.1, TDLA/B – Transition
Detect Latches , for more information.
MRLB Match B Recognition Latch
TDLA Transition A Detection Latch
TDLB Transition B Detection Latch
LSR Link Service Request Reflects the serviced channel.
PSS Sampled Input Pin State Reflects the selected channel (CHAN). Does not
change if CHAN is not changed (see
Section 24.5.5.1.2, Pin Control Registers ).
PSTI Current Input Pin State. Reflects the selected channel (CHAN).
Changes any time.
PSTO Current Output Pin State Reflects the selected channel (CHAN).
Changes any time.
FM[1:0] Function Mode Bits reflects the Function Mode for serviced channel
(
Section 24.4.7.2, ETPU_CxSCR – eTPU Channel x
Status Control Register )
Table 24-71. Channel flags as branch condition (continued)
Flag Description Service or selected channel