參數(shù)資料
型號: XCB56364FU100
廠商: MOTOROLA INC
元件分類: 數(shù)字信號處理
英文描述: 24-Bit Audio Digital Signal Processor
中文描述: 8-BIT, 100 MHz, OTHER DSP, PQFP100
封裝: PLASTIC, TQFP-100
文件頁數(shù): 12/162頁
文件大?。?/td> 2405K
代理商: XCB56364FU100
Signal/Connection Descriptions
Interrupt and Mode Control
1-8
DSP56364 Advance Information
MOTOROLA
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 is deasserted, these inputs are hardware interrupt request lines.
Table 1-8 Interrupt and Mode Control
Signal Name
Type
State
during
Reset
Signal Description
MODA/
IRQA
Input
Input
Mode Select A/External Interrupt Request A—
MODA/
IRQA
is an active-low
Schmitt-trigger input, internally synchronized to the internal system clock.
MODA/
IRQA
selects the initial chip operating mode during hardware reset and
becomes a level-sensitive or negative-edge-triggered, maskable interrupt
request input during normal instruction processing. MODA, MODB, and MODD
select one of 8 initial chip operating modes, latched into the OMR when the
RESET
signal is deasserted. If
IRQA
is asserted synchronous to the internal
system clock, 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 standby state and
IRQA
is asserted, the processor will exit the stop state.
This input is 5 V tolerant
.
MODB/
IRQB
Input
Input
Mode Select B/External Interrupt Request B—
MODB/
IRQB
is an active-low
Schmitt-trigger input, internally synchronized to the internal system clock.
MODB/
IRQB
selects the initial chip operating mode during hardware reset and
becomes a level-sensitive or negative-edge-triggered, maskable interrupt
request input during normal instruction processing. MODA, MODB, and MODD
select one of 8 initial chip operating modes, latched into OMR when the
RESET
signal is deasserted. If
IRQB
is asserted synchronous to the internal system
clock, multiple processors can be re-synchronized using the WAIT instruction
and asserting
IRQB
to exit the wait state.
This input is 5 V tolerant.
MODD/
IRQD
Input
Input
Mode Select D/External Interrupt Request D
—MODD/
IRQD
is an active-low
Schmitt-trigger input, internally synchronized to the internal system clock.
MODD/
IRQD
selects the initial chip operating mode during hardware reset and
becomes a level-sensitive or negative-edge-triggered, maskable interrupt
request input during normal instruction processing. MODA, MODB, and MODD
select one of 8 initial chip operating modes, latched into OMR when the
RESET
signal is deasserted. If
IRQD
is asserted synchronous to the internal system
clock, multiple processors can be re synchronized using the WAIT instruction
and asserting
IRQD
to exit the wait state.
This input is 5 V tolerant.
RESET
Input
Input
Reset—
RESET
is an active-low, Schmitt-trigger input. When asserted, the chip
is placed in the reset state and the internal phase generator is reset. The
Schmitt-trigger input allows a slowly rising input (such as a capacitor charging)
to reset the chip reliably. When the
RESET
signal is deasserted, the initial chip
operating mode is latched from the MODA, MODB, and MODD inputs. The
RESET
signal must be asserted during power up. A stable EXTAL signal must
be supplied before deassertionof
RESET
.
This input is 5 V tolerant
.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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