参数资料
型号: MSC8144VT1000B
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 133 MHz, OTHER DSP, PBGA783
封装: 29 X 29 MM, LEAD FREE, PLASTIC, FCPBGA-783
文件页数: 59/80页
文件大小: 1250K
代理商: MSC8144VT1000B
MSC8144 Quad Core Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
62
Figure 36. SPI AC Timing in Master Mode (Internal Clock)
2.6.13
Asynchronous Signal Timing
The following interfaces use the specified asynchronous signals:
GPIO. Signals GPIO[31–0], when used as GPIO signals, that is, when the alternate multiplexed special functions are
not selected.
Note:
When used as a GPI, the input should be driven until it is acknowledged by the device; the GPIO input status is read
from a register.
EE port. Signals EE0, EE1, EE2_0, EE2_1, EE2_2, and EE2_3.
Boot function. Signal STOP_BS.
I2C interface. Signals I2C_SCL and I2C_SDA.
Interrupt inputs. Signals IRQ[15–0] and NMI.
Interrupt outputs. Signals INT_OUT and NMI_OUT (pulse width is 10 ns).
Figure 37 shows the behavior of the asynchronous signals.
Table 49. Signal Timing
Characteristics
Symbol
Type
Min
Input
tIN
Asynchronous
One CLKIN cycle1
Output
tOUT
Asynchronous
Application dependent
Note:
1. Relevant for EE0, IRQ[15–0], and NMI only.
Figure 37. Asynchronous Signal Timing
SPICLK (Output)
tNIIXKH
tNIKHOV
Input Signals:
SPIMISO
(See Note)
Output Signals:
SPIMOSI
(See Note)
Note: The clock edge is selectable on SPI.
tNIIVKH
tNIKHOX
Output
tIN
Input
tOUT
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