spakdsp301vl100 Freescale Semiconductor, Inc, spakdsp301vl100 Datasheet - Page 13

• Manufacturer Part Number: spakdsp301vl100
• Description: Dsp56301 24-bit Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

1.6 Interrupt and Mode Control
The interrupt and mode control signals select the chip’s operating mode as it comes out of hardware reset. After
RESET
Freescale Semiconductor
MODA
IRQA
MODB
IRQB
MODC
IRQC
Signal Name
is deasserted, these inputs are hardware interrupt request lines.
Input
Input
Input
Input
Input
Input
Type
Input
Input
Input
State During
Table 1-9.
Reset
DSP56301 Technical Data, Rev. 10
Interrupt and Mode Control
Mode Select A
Selects the initial chip operating mode during hardware reset and becomes a
level-sensitive or negative-edge-triggered, maskable interrupt request input
IRQA during normal instruction processing. MODA, MODB, MODC, and
MODD select one of sixteen initial chip operating modes, latched into the OMR
when the RESET signal is deasserted.
External Interrupt Request A
Internally synchronized to CLKOUT. If IRQA is asserted synchronous to
CLKOUT, multiple processors can be re-synchronized using the WAIT
instruction and asserting IRQA to exit the Wait state. If the processor is in the
Stop stand-by state and IRQA is asserted, the processor exits the Stop state.
These inputs are 5 V tolerant.
Mode Select B
Selects the initial chip operating mode during hardware reset and becomes a
level-sensitive or negative-edge-triggered, maskable interrupt request input
IRQB during normal instruction processing. MODA, MODB, MODC, and
MODD select one of sixteen initial chip operating modes, latched into the OMR
when the RESET signal is deasserted.
External Interrupt Request B
Internally synchronized to CLKOUT. If IRQB is asserted synchronous to
CLKOUT, multiple processors can be re-synchronized using the WAIT
instruction and asserting IRQB to exit the Wait state. If the processor is in the
Stop stand-by state and IRQC is asserted, the processor will exit the Stop
state.
These inputs are 5 V tolerant.
Mode Select C
Selects the initial chip operating mode during hardware reset and becomes a
level-sensitive or negative-edge-triggered, maskable interrupt request input
IRQC during normal instruction processing. MODA, MODB, MODC, and
MODD select one of sixteen initial chip operating modes, latched into the OMR
when the RESET signal is deasserted.
External Interrupt Request C
Internally synchronized to CLKOUT. If IRQC is asserted synchronous to
CLKOUT, multiple processors can be re-synchronized using the WAIT
instruction and asserting IRQC to exit the Wait state. If the processor is in the
Stop stand-by state and IRQC is asserted, the processor exits the Stop state.
These inputs are 5 V tolerant.
Signal Description
Interrupt and Mode Control
1-9