MC68EC020FG25 Freescale Semiconductor, MC68EC020FG25 Datasheet - Page 194
MC68EC020FG25
Manufacturer Part Number
MC68EC020FG25
Description
IC MPU 32 BIT 25MHZ 100-QFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68EC020AA16.pdf
(306 pages)
Specifications of MC68EC020FG25
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68EC020FG25
Manufacturer:
FREESCALE
Quantity:
8 831
Company:
Part Number:
MC68EC020FG25
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68EC020FG25
Manufacturer:
MOTOROL
Quantity:
20 000
- Current page: 194 of 306
- Download datasheet (2Mb)
7.4.12 Transfer to/from Top of Stack Primitive
The transfer to/from top of stack primitive transfers an operand between the coprocessor
and the top of the active system stack of the main processor. This primitive applies to
general and conditional category instructions. Figure 7-32 shows the format of the transfer
to/from top of stack primitive.
The transfer to/from top of stack primitive uses the CA, PC, and DR bits as described in
7.4.2 Coprocessor Response Primitive General Format. If the coprocessor issues this
primitive with CA = 0 during a conditional category instruction, the main processor initiates
protocol violation exception processing.
The length field of the primitive format specifies the length in bytes of the operand to be
transferred. The operand may be one, two, or four bytes in length; other length values
cause the main processor to initiate protocol violation exception processing.
If DR = 0, the main processor transfers the operand from the active system stack to the
operand CIR. The implied effective address mode used for the transfer is the (A7)+
addressing mode. A one-byte operand causes the stack pointer to be incremented by two
after the transfer to maintain word alignment of the stack.
If DR = 1, the main processor transfers the operand from the operand CIR to the active
system stack. The implied effective address mode used for the transfer is the –(A7)
addressing mode. A one-byte operand causes the stack pointer to be decremented by two
before the transfer to maintain word alignment of the stack.
7.4.13 Transfer Single Main Processor Register Primitive
The transfer single main processor register primitive transfers an operand between one of
the main processor's data or address registers and the coprocessor. This primitive applies
to general and conditional category instructions. Figure 7-33 shows the format of the
transfer single main processor register primitive.
The transfer single main processor register primitive uses the CA, PC, and DR bits as
described in 7.4.2 Coprocessor Response Primitive General Format. If the
coprocessor issues this primitive with CA = 0 during a conditional category instruction, the
main processor initiates protocol violation exception processing.
MOTOROLA
Figure 7-33. Transfer Single Main Processor Register Primitive Format
15
CA
15
CA
Figure 7-32. Transfer to/from Top of Stack Primitive Format
PC
PC
14
14
DR
DR
13
13
12
12
0
0
11
11
1
1
10
10
1
1
M68020 USER’S MANUAL
9
1
9
0
8
8
0
0
7
7
0
6
0
5
0
4
LENGTH
0
D/A
3
2
REGISTER
0
0
7- 41
Related parts for MC68EC020FG25
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: