MC68030FE20C Freescale Semiconductor, MC68030FE20C Datasheet - Page 54

• Manufacturer Part Number: MC68030FE20C
• Description: IC MPU 32BIT ENHANCED 132-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68030FE20C

• Processor Type: M680x0 32-Bit
• Speed: 20MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

2.4.1 Data Register Direct M o d e
MOTOROLA
The notational conventions used in the addressing mode descriptions in this
When the addressing mode uses a register, the register field of the operation
word specifies the register to be used. Other fields within the instruction
specify whether the register selected is an address or data register and how
the register is to be used.
The effective address field may require additional information to fully specify
the operand address. This additional information, called the effective address
extension, is contained in an additional word or words and is considered part
of the instruction. Refer to 2.5 EFFECTIVE ADDRESS ENCODING SUMMARY
for a description of the extension word formats.
section are:
In the data register direct mode, the operand is in the data register specified
by the effective address register field.
ASSEMBLER SYNTAX:
GENERATION:
MODE:
REGISTER:
DATA REGISTER:
NUMBER OF EXTENSION WORDS:
Xn.SIZE*SCALE--Denotes index register n (data or address), the index size
An--Address register n
EA--Effective address
Dn--Data register n
PC--The program counter
od--Outer displacement
dn--Displacement value, n bits wide
bd--Base displacement
W--Word size
( )--Identify an indirect address in a register
[ ]--Identify an indirect address in memory
L--Long-word size
(W for word, L for long word), and a scale factor (1, 2, 4,
or 8, for no, word, long-word or 8 for quad-word scaling,
respectively).
EA =
On
000
n
Dn
0
Example: A3 is address register 3
Example: D5 is data register 5
On
MC68030 USER'S MANUAL
~1
31
OPERANO
2-9
0
1
¸¸¸¸¸2