S912XHZ512F1VAG Datasheet, PDF (807/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 23
External Bus Interface (S12XEBIV3)
23.1 Introduction
This document describes the functionality of the XEBI block controlling the external bus interface.
The XEBI controls the functionality of a non-multiplexed external bus (a.k.a. ‘expansion bus’) in
relationship with the chip operation modes. Dependent on the mode, the external bus can be used for data
exchange with external memory, peripherals or PRU, and provide visibility to the internal bus externally
in combination with an emulator.
MC9S12XHZ512 Data Sheet, Rev. 1.06
Freescale Semiconductor
807