mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 956

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

Communication Processor Module
SCCP—SCCc Priority Order
This field defines whether the USB or SCCs will assert a request in the SCCc priority
position.
SCBP—SCCb Priority Order
This field defines whether the USB or SCCs will assert a request in the SCCb priority
position.
SCAP—SCCa Priority Order
This field defines whether the USB or SCCs will assert a request in the SCCa priority
position.
IRL—Interrupt Request Level
This field contains the priority request level of the interrupt from the communication
processor module that is sent to the core. Level 0 indicates the highest priority interrupt and
level 7 indicates the lowest. The IRL field is initialized to zero during reset. In most systems,
value 0x4 is a good value to choose for these bits.
HP—Highest Priority
This field specifies the 5-bit interrupt number of the single CPM interrupt controller’s interrupt
source that is advanced to the highest priority in the table. These bits can be dynamically
modified. To keep the original priority order intact, simply program these bits to 11111.
00 = USB will assert its request in the SCCc position.
01 = SCC2 will assert its request in the SCCc position.
10 = SCC3 will assert its request in the SCCc position.
11 = Neither the USB or SCCx will assert its request in the SCCc position.
00 = USB asserts its request in the SCCb position.
01 = SCC2 asserts its request in the SCCb position.
10 = SCC3 will assert its request in the SCCb position.
11 = Neither the USB or SCCx will assert its request in the SCCb position.
00 = USB asserts its request in the SCCa position.
01 = SCC2 asserts its request in the SCCa position.
10 = SCC3 will assert its request in the SCCa position.
11 = Neither the USB or SCCx will assert its request in the SCCa position.
000 = Highest priority interrupt.
111 = Lowest priority interrupt.
Note: You must not program the USB or SCCs to more than one priority position (a, b,
c, or d). These bits may be changed dynamically.
Freescale Semiconductor, Inc.
For More Information On This Product,
MPC823 REFERENCE MANUAL
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