MC68306
Microprocessor and Memory
Technologies Group
MC68306
UPDATE TO
MC68306 Integrated EC000 Processor User’s Manual
October 7, 1995
This update to the initial release of the MC68306UM/AD User’s Manual and the MC68306UMAD/AD User’s
Manual Addendum provides corrections to the original text, plus additional information not included in the original. This document and other information on this product is maintained on the AESOP BBS, which can be
reached at (800)843-3451 (from the US and Canada) or (512)891-3650. Configure the modem for up to 14.4K
baud, 8 bits, 1 stop bit, and no parity. Terminal software should support VT100 emulation. Internet access is
provided by telneting to pirs.aus.sps.mot.com [129.38.233.1] or through the World Wide Web at http://
pirs.aus.sps.mot.com.
1. System Register Naming Conventions
In section 5, pages 5-1 through 5-17, none of the registers have standardized abbreviations. Below is a table
which provides the abbreviated names for all of the MC68306 system registers. These are the standard
names that will be used in assembly and C header files. Some registers have 32-bit names and two 16-bit
names which overlap the upper and lower, (High and Low) 16 bits of the register.
Address
FFFFFFC0/1/2/3
FFFFFFC0/1
FFFFFFC2/3
FFFFFFC4/5/6/7
FFFFFFC4/5
FFFFFFC6/7
FFFFFFC8/9/A/B
FFFFFFC8/9
FFFFFFCA/B
FFFFFFCC/D/E/F
FFFFFFCC/D
FFFFFFCE/F
FFFFFFD0/1/2/3
FFFFFFD0/1
FFFFFFD2/3
FFFFFFD4/5/6/7
Abbreviation
CSC0
CSC0H
CSC0L
CSC1
CSC1H
CSC1L
CSC2
CSC2H
CSC2L
CSC3
CSC3H
CSC3L
CSC4
CSC4H
CSC4L
CSC5
Name
Chip Select Configuration Register 0
Chip Select Configuration Register 0 (High Half)
Chip Select Configuration Register 0 (Low Half)
Chip Select Configuration Register 1
Chip Select Configuration Register 1 (High Half)
Chip Select Configuration Register 1 (Low Half)
Chip Select Configuration Register 2
Chip Select Configuration Register 2 (High Half)
Chip Select Configuration Register 2 (Low Half)
Chip Select Configuration Register 3
Chip Select Configuration Register 3 (High Half)
Chip Select Configuration Register 3 (Low Half)
Chip Select Configuration Register 4
Chip Select Configuration Register 4 (High Half)
Chip Select Configuration Register 4 (Low Half)
Chip Select Configuration Register 5
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
SEMICONDUCTOR PRODUCT INFORMATION
 1995 Motorola, Inc. All Rights Reserved.
FFFFFFD4/5
FFFFFFD6/7
FFFFFFD8/9/A/B
FFFFFFD8/9
FFFFFFDA/B
FFFFFFDC/D/E/F
FFFFFFDC/D
FFFFFFDE/F
FFFFFFE0/1/2/3
FFFFFFE0/1
FFFFFFE2/3
FFFFFFE4/5/6/7
FFFFFFE4/5
FFFFFFE6/7
FFFFFFF0
FFFFFFF1
FFFFFFF2
FFFFFFF3
FFFFFFF4
FFFFFFF5
FFFFFFF8/9
FFFFFFFA/B
FFFFFFFC
FFFFFFFD
FFFFFFFE
FFFFFFFF
CSC5H
CSC5L
CSC6
CSC6H
CSC6L
CSC7
CSC7H
CSC7L
DBC0
DBC0H
DBC0L
DBC1
DBC1H
DBC1L
PADAT
PBDAT
PADDR
PBDDR
PAPR
PBPR
ISR
ICR
DREF
BTPR
SYSR
TVR
Chip Select Configuration Register 5 (High Half)
Chip Select Configuration Register 5 (Low Half)
Chip Select Configuration Register 6
Chip Select Configuration Register 6 (High Half)
Chip Select Configuration Register 6 (Low Half)
Chip Select Configuration Register 7
Chip Select Configuration Register 7 (High Half)
Chip Select Configuration Register 7 (Low Half)
DRAM Bank Configuration Register 0
DRAM Bank Configuration Register 0 (High Half)
DRAM Bank Configuration Register 0 (Low Half)
DRAM Bank Configuration Register 1
DRAM Bank Configuration Register 1 (High Half)
DRAM Bank Configuration Register 1 (Low Half)
Port A Data Register
Port B Data Register
Port A Data Direction Register
Port B Data Direction Register
Port A Pins Register
Port B Pins Register
Interrupt Status Register
Interrupt Control Register
DRAM Refresh Register
Bus Timeout Period Register
System Register
Timer Vector Register
These names should be added to each of the register section titles. All tables should also reflect the standardized naming conventions. Below are some example title changes:
5.2.3 Bus timeout Period Register (BTPR)
5.2.5.1 Port Pins Register (PxPR)
5.2.7.2 DRAM Bank Configuration Register (High Half) (DBCxH)
MOTOROLA
MC68306 USER’S MANUAL ADDENDUM
2
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. "Typical" parameters can and do vary in different
applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not
convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the
Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended
or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all
claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with
such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
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SEMICONDUCTOR PRODUCT INFORMATION
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