参数资料
型号: MSC7112VM1000
厂商: Freescale Semiconductor
文件页数: 29/56页
文件大小: 0K
描述: DSP 16BIT W/DDR CTRLR 400-MAPBGA
标准包装: 90
系列: StarCore
类型: 定点
接口: 主机接口,I²C,UART
时钟速率: 266MHz
非易失内存: ROM(8 kB)
芯片上RAM: 208kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 400-LFBGA
供应商设备封装: 400-MAPBGA(17x17)
包装: 托盘
MSC7112 Low-Cost 16-bit DSP with DDR Controller Data Sheet, Rev. 11
Freescale Semiconductor
35
2.5.10
Event Timing
Figure 20 shows the signal behavior of the EVNT pin.
2.5.11
GPIO Timing
Figure 21 shows the signal behavior of the GPI/GPO pin.
Table 26. EVNT Signal Timing
Number
Characteristics
Type
Min
67
EVNT as input
Asynchronous
1.5
× APBCLK periods
68
EVNT as output
Synchronous to core clock
1 APBCLK period
Notes:
1.
Refer to Table 24 for a definition of the APBCLK period.
2.
Direction of the EVNT signal is configured through the GPIO and Event port registers.
3.
Refer to the MSC711x Reference Manual for details on EVNT pin functionality.
Figure 20. EVNT Pin Timing
Table 27. GPIO Signal Timing1,2,3
Number
Characteristics
Type
Min
601
GPI4.5
Asynchronous
1.5
× APBCLK periods
602
GPO5
Synchronous to core clock
1 APBCLK period
603
Port A edge-sensitive interrupt
Asynchronous
1.5
× APBCLK periods
604
Port A level-sensitive interrupt
Asynchronous
3
× APBCLK periods6
Notes:
1.
Refer to Table 24 for a definition of the APBCLK period.
2.
Direction of the GPIO signal is configured through the GPIO port registers.
3.
Refer to MSC711x Reference Manual for details on GPIO pin functionality.
4.
GPI data is synchronized to the APBCLK internally and the minimum listed is the capability of the hardware to capture data
into a register when the GPA_DR is read. The specification is not tested due to the asynchronous nature of the input and
dependence on the state of the DSP core. It is guaranteed by design.
5.
The input and output signals cannot toggle faster than 50 MHz.
6.
Level-sensitive interrupts should be held low until the system determines (via the service routine) that the interrupt is
acknowledged.
Figure 21. GPI/GPO Pin Timing
EVNT in
67
EVNT out
68
GPI
601
GPO
602
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