参数资料
型号: MC56F8356VFVE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP144
封装: ROHS COMPLIANT, LQFP-144
文件页数: 10/178页
文件大小: 910K
代理商: MC56F8356VFVE
Register Descriptions
56F8356 Technical Data, Rev. 13
Freescale Semiconductor
107
Preliminary
11 = Required nested exception priority level is 3
5.6.30.3
Vector Number - Vector Address Bus (VAB)—Bits 12–6
This read-only field shows the vector number (VAB[7:1]) used at the time the last IRQ was taken. This
field is only updated when the 56800E core jumps to a new interrupt service routine.
Note:
Nested interrupts may cause this field to be updated before the original interrupt service routine can
read it.
5.6.30.4
Interrupt Disable (INT_DIS)—Bit 5
This bit allows all interrupts to be disabled.
0 = Normal operation (default)
1 = All interrupts disabled
5.6.30.5
Reserved—Bit 4
This bit field is reserved or not implemented. It is read as 1 and cannot be modified by writing.
5.6.30.6
IRQB State Pin (IRQB STATE)—Bit 3
This read-only bit reflects the state of the external IRQB pin.
5.6.30.7
IRQA State Pin (IRQA STATE)—Bit 2
This read-only bit reflects the state of the external IRQA pin.
5.6.30.8
IRQB Edge Pin (IRQB Edg)—Bit 1
This bit controls whether the external IRQB interrupt is edge- or level-sensitive. During Stop and Wait
modes, it is automatically level-sensitive.
0 = IRQB interrupt is a low-level sensitive (default)
1 = IRQB interrupt is falling-edge sensitive
5.6.30.9
IRQA Edge Pin (IRQA Edg)—Bit 0
This bit controls whether the external IRQA interrupt is edge- or level-sensitive. During Stop and Wait
modes, it is automatically level-sensitive.
0 = IRQA interrupt is a low-level sensitive (default)
1 = IRQA interrupt is falling-edge sensitive
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