mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1115

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Development Capabilities and Interface
20.6.4 Development Port Data Register
The special-purpose development port data register (DPDR) physically resides in the
development port logic. It is used for data interchange between the core and development
system. An access to this register is initiated using the mtspr and mfspr instructions and it
is implemented using a special bus cycle on the internal bus. For details, see Table 6-9.
DPDV—Development Port Data Value
This field contains the data to be transferred between the core and the development system.
DPIV—Development Port Instruction Value
This field is used to fetch an instruction supplied by the development system.
DPDR
DPIR
NOTE: — = Undefined.
NOTE: — = Undefined.
RESET
RESET
RESET
RESET
FIELD
FIELD
FIELD
FIELD
SPR
SPR
SPR
SPR
R/W
R/W
R/W
R/W
BIT
BIT
BIT
BIT
16
16
0
0
17
17
1
1
18
18
2
2
Freescale Semiconductor, Inc.
For More Information On This Product,
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19
3
3
20
20
MPC823 REFERENCE MANUAL
4
4
Go to: www.freescale.com
21
21
5
5
22
22
6
6
23
23
7
7
DPDV
DPDV
DPIV
DPIV
R/W
R/W
630
630
631
631
—
—
—
—
R
R
24
24
8
8
25
25
9
9
10
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10
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11
27
11
27
12
28
12
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MOTOROLA
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