Table 4-35 MSCAN Registers Address Map (Continued)
(MSCAN_BASE = $00 F800)
Register Acronym
MSCAN_TXFG4
Address Offset
Register Description
Foreground Transmit Buffer 4
$34
$35
$36
$37
$38
$39
$3A
$3B
$3C
$3D
$3E
$3F
MSCAN_TXFG5
MSCAN_TXFG6
MSCAN_TXFG7
MSCAN_TXFG8
MSCAN_TXFG9
MSCAN_TXFG10
MSCAN_TXFG11
MSCAN_TXFG12
MSCAN_TXFG13
MSCAN_TXFG14
MSCAN_TXFG15
Foreground Transmit Buffer 5
Foreground Transmit Buffer 6
Foreground Transmit Buffer 7
Foreground Transmit Buffer 8
Foreground Transmit Buffer 9
Foreground Transmit Buffer 10
Foreground Transmit Buffer 11
Foreground Transmit Buffer 12
Foreground Transmit Buffer 13
Foreground Transmit Buffer 14
Foreground Transmit Buffer 15
Reserved
Part 5 Interrupt Controller (ITCN)
5.1 Introduction
The Interrupt Controller (ITCN) module arbitrates between various interrupt requests (IRQs), signals to
the 56800E core when an interrupt of sufficient priority exists, and to what address to jump in order to
service this interrupt.
5.2 Features
The ITCN module design includes these distinctive features:
•
•
•
•
Programmable priority levels for each IRQ
Two programmable Fast Interrupts
Notification to SIM module to restart clocks out of Wait and Stop modes
Ability to drive initial address on the address bus after reset
For further information, see Table 4-2, Interrupt Vector Table Contents.
5.3 Functional Description
The Interrupt Controller is a slave on the IPBus. It contains registers that allow each of the 64 interrupt
sources to be set to one of four priority levels (excluding certain interrupts that are of fixed priority). Next,
all of the interrupt requests of a given level are priority encoded to determine the lowest numerical value
of the active interrupt requests for that level. Within a given priority level, number 0 is the highest priority
and number 63 is the lowest.
56F8037/56F8027 Data Sheet, Rev. 6
68
FreescaleSemiconductor
FREESCALE [ Freescale ]
