Connection Example Using Multiplexed Bus Interface - Fujitsu MB88121 Application Note

5.2 Connection example using multiplexed bus interface

A connection example of the multiplexed mode is summarized in the following table. The
gray entries show the differences between two parallel modes. All pins of the communication
controller (CC) are divided into 7 categories:
•
External bus interface: CC pins in connection with MCU pins
•
CC mode pins
•
CC debug pins
•
CC stop watch trigger pin
•
CC pins in connection with physical layer transceiver
•
CC power supply pins
•
CC external clock pin
Note:
1. The connection of the interrupt pins is application-specific. The table here shows only
an example.
2. The CC reset pin can be controlled by MCU reset pin or by an independent circuitry.
3. By default settings in file start91460.asm (see chapter 3.5) chip select area 3 is
configured. Other areas can also be used.
4. For the power supply it should be noticed that MB88121B is a single voltage supply
chip. All power supply pins should have the same supply voltage between 3.3V and
5V (see chapter 3.2).
MCU-AN-300016-E-V10
Interfacing MB91460 TO MB88121
Chapter 5 Appendix
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