MC9S12XE-Family Reference Manual , Rev. 1.19
Freescale Semiconductor
241
Chapter 5
External Bus Interface (S12XEBIV4)
5.1
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.
Table 5-1. Revision History
Revision
Number
Revision Date
Sections
Affected
Description of Changes
V04.01
12 Sep 2005
- Added CSx stretch description.
V04.02
23 May 2006
- Internal updates
V04.03
24 Jul 2006
- Removed term IVIS
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages