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Table 2-1. MPC533 Signal Descriptions (continued)
Signal Name
MPIO32B3 / VFLS0 / MSEO
MPIO32B4 / VFLS1
MPIO32B5 / MDO5
MPIO32B6 / MPWM4 /
MDO6
MPIO32B[7:9] / MPWM[5,
20:21]
MPIO32B10 / PPM_TSYNC
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
No. of
Function
Type
Signals
after Reset
I/O
MPIO32B3
unless the
O
Nexus
2
(READI) port
is enabled
See section
25.5.
O
I/O
1
MPIO32B4
O
I/O
MPIO32B[5]
unless the
NEXUS
1
(READI) port
O
is enabled,
then MDO5.
See section
25.5.
I/O
MPIO32B[6]
unless the
NEXUS
(READI) port
I/O
1
is enabled,
then MDO6.
See section
O
25.5.
I/O
3
MPIO32B
[7:9]
I/O
I/O
1
MPIO32B10
O
Chapter 2. Signal Descriptions
Description
1
MIOS14 GPIO 3 – Allows the signal to be used as a
general-purpose input/output.
Visible History Buffer Flush Status 0 – This signal is output
by the MPC533 to allow program instruction flow tracking.
It reports the number of instructions flushed from the
history buffer in the RCPU. See Chapter 23, "Development
Support," for details.
MSEO – Message start/end out (MSEO) is an output signal
which indicates when a message on the MDO signals has
started, when a variable length packet has ended, and
when the message has ended. External latching of MSEO
occurs on rising edge of MCKO.
MIOS14 GPIO 4 – Allows the signal to be used as a
general-purpose input/output.
Visible History Buffer Flush Status 1 – This signal is output
by the MPC533 to allow program instruction flow tracking.
It reports the number of instructions flushed from the
history buffer in the RCPU. See Chapter 23, "Development
Support," for details.
MIOS14 GPIO 5 – Allows the signal to be used as a
general-purpose input/output.
READI Message Data Out – Message data out (MDO5) is
an output signal used for uploading OTM, BTM, DTM, and
read/write accesses. External latching of MDO occurs on
rising edge of MCKO. Eight MDO signals are implemented.
MIOS14 GPIO 6 – Allows the signal to be used as a
general-purpose input/output.
Pulse Width Modulation 4 – These signals provide variable
pulse width outputs at a wide range of frequencies.
READI Message Data Out – Message data out (MDO6) is
an output signal used for uploading OTM, BTM, DTM, and
read/write accesses. External latching of MDO occurs on
rising edge of MCKO. Eight MDO signals are implemented.
MIOS14 GPIO [7:9] – Allows these signals to be used as a
general-purpose input/output.
Pulse Width Modulation [5, 20:21] – These signals provide
variable pulse width outputs at a wide range of frequencies.
MIOS14 GPIO 10 – This function allows the signals to be
used as a general-purpose inputs/outputs.
PPM_TSYNC – Synchronizes the data between the PPM
and peripheral devices.
Signal Summary
2-19
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