
System Control Module (SCM)
11-10
Freescale Semiconductor
11.2.7
SCM Interrupt Status Register (SCMISR)
For certain values in the CWCR[CWRI] field, the CWT generates an interrupt response to a time-out. For
these configurations, the SCMISR provides a program visible interrupt request from the watchdog timer.
During the interrupt service routine which handles this interrupt, the source must be explicitly cleared by
writing a 0x01 to the SCMISR.
The SCMISR also indicates system bus fault errors. An interrupt will only be sent to the interrupt
controller when the CFIER[ECFEI] bit is set. The SCMISR[CFEI] bit flags fault errors independent of the
CFIER[ECFEI] setting. Therefore, if CFEI is set prior to setting ECFEI, an interrupt is requested
immediately after ECFEI is set.
11.2.8
Burst Configuration Register (BCR)
The BCR register is used to enable or disable the LCD controller, USB host, and USB On-the-Go modules
for bursting to/from the cross-bar switch slave modules. There is an enable field for the slaves, and either
direction (read and write) is supported via the GBR and GBW bits.
Address: 0xFC04_001F (SCMISR)
Access: User read/write
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
CFEI
CWIC
W
w1c
w1c
Reset:
0
0
0
0
0
0
0
0
Figure 11-16. SCM Interrupt Status Register (SCMISR)
Table 11-8. SCMISR Field Descriptions
Field
Description
7–2
Reserved, should be cleared.
1
CFEI
Core fault error interrupt flag. Indicates if a bus fault has occurred.
0 No bus error.
1 A bus error has occurred. The faulting address, attributes (and possibly write data) are captured in the CFADR,
CFATR, and CFDTR registers. The error interrupt is only enabled if CFLOC[ECFEI] is set. The interrupt request
is negated by writing a 1 to this bit. Writing a 0 has no effect.
Note: This bit reports core faults regardless of the setting of CFIER[ECFEI]. Therefore, if the error interrupt is
disabled and a core fault occurs, this bit is set. Then, if the error interrupt is subsequently enabled, an interrupt
is immediately requested. To prevent an undesired interrupt, clear the captured error by writing one to CFEI
before enabling the interrupt.
0
CWIC
Core watchdog interrupt flag. Indicates whether an CWT interrupt has occurred.
0 No CWT interrupt has occurred.
1 CWT interrupt has occurred. Writing a 1 clears this bit and negates the interrupt request. Writing a 0 has no effect.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...