MC68030FE20C Freescale Semiconductor, MC68030FE20C Datasheet - Page 401

• 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: -

10
10-14
10.2.2.1.1 Format.
the branch instruction format can include this information in extension words.
termined by the coprocessor design. The final word(s) of the cpBcc instruction
format contains the displacement used by the main processor to calculate
the destination address when the branch is taken.
The first word of the branch on coprocessor condition instruction is the
fication code of the coprocessor that is to evaluate the condition. The value
in bits [8:6] identifies either the word or the long-word displacement format
of the branch instruction, which is specified by the cpBcc.W or cpBcc.L mne-
selector field. The MC68030 writes the entire operation word to the condition
CIR to initiate execution of the branch instruction by the coprocessor. The
coprocessor uses bits [0-5] to determine which condition to evaluate.
If the coprocessor requires additional information to evaluate the condition,
F-line operation word. Bits [15:12]=1111 and bits [11:9] contain the identi-
monic, respectively.
Bits [0-5] of the F-line operation word contain the coprocessor condition
Following the F-line operation word, the number of extension words is de-
condition instruction that provides a word-length displacement. Figure
ment.
10-10 shows the format of the instruction that includes a long-word displace-
15
15
'
1 I 1 I I I 1 I
Figure 10-10. Branch On Coprocessor Condition Instruction (cpBcc.L)
Figure 10-9. Branch on Coprocessor Condition Instruction (cpBcc.W)
I ' I1 I '
14
14
13
13
Figure 10-9 shows the format of the branch on coprocessor
12
12 11
I
OPTIONAL COPROCESSOR-DEFI N ED EXTENSION WORDS
OPTIONAL COPROCESSOR-DEFI N ED EXTENSION WORDS
11
MC68030 USER'S MANUAL
Cpl O
cp,0
DISPLACEMENT -- HIGH
DISPLACEMENT -- LOW
9
9
DISPLACEMENT
I 0
8
8
I
I 1
I
7
7
I'
I 0
0
6
B
I
I
5
5
CONO,T, ON SE'ECTO,
CONDITION SELECTOR
MOTOROLA