mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 407

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Chapter 17
Signal Descriptions
This chapter describes MCF5407 signals. It includes an alphabetical listing of signals,
showing multiplexing, whether it is an input or output to the MCF5407, the state at reset,
and whether a pull-up resistor should be used. The following chapter, Chapter 18, “Bus
Operation,” describes how these signals interact.
17.1 Overview
Figure 17-1 shows the block diagram of the MCF5407 with the signal interface.
The terms ‘assertion’ and ‘negation’ are used to avoid
confusion when dealing with a mixture of active-low and
active-high signals. The term ‘asserted’ indicates that a signal
is active, independent of the voltage level. The term ‘negated’
indicates that a signal is inactive.
Active-low signals, such as SRAS and TA, are indicated with
an overbar.
Chapter 17. Signal Descriptions
NOTE:
17-1