参数资料
型号: DSPB56374AEC
厂商: Freescale Semiconductor
文件页数: 27/64页
文件大小: 0K
描述: IC DSP 24BIT 150MHZ 52-LQFP
产品变化通告: Product Discontinuation 24/Feb/2012
标准包装: 160
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 150MHz
非易失内存: ROM(84 kB)
芯片上RAM: 54kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.25V
工作温度: -40°C ~ 110°C
安装类型: 表面贴装
封装/外壳: 52-LQFP
供应商设备封装: 52-LQFP(10x10)
包装: 托盘
Reset, Stop, Mode Select, and Interrupt Timing
DSP56374 Data Sheet, Rev. 4.2
Freescale Semiconductor
33
Figure 3. Reset Timing
21
Interrupt Requests Rate1
ESAI, ESAI_1, SHI, Timer
12 x TC
—80.0
ns
DMA
8 x TC
—53.0
ns
IRQ, NMI (edge trigger)
8 x TC
—53.0
ns
IRQ (level trigger)
12 x TC
—80.0
ns
22
DMA Requests Rate
Data read from ESAI, ESAI_1, SHI
6 x TC
—40.0
ns
Data write to ESAI, ESAI_1, SHI
7 x TC
—46.7
ns
Timer
2 x TC
—13.4
ns
IRQ, NMI (edge trigger)
3 x TC
—20.0
ns
Note:
1 When using fast interrupts and IRQA, IRQB, IRQC, and IRQD are defined as level-sensitive, timings 19 through
21 apply to prevent multiple interrupt service. To avoid these timing restrictions, the Edge-triggered mode is
recommended when using fast interrupts. Long interrupts are recommended when using Level-sensitive mode.
2 For PLL disable, using external clock (PCTL Bit 16 = 1), no stabilization delay is required and recovery time will
be defined by the OMR Bit 6 settings.
For PLL enable, (if bet 12 of the PCTL register is 0), the PLL is shutdown during Stop. Recovering from Stop
requires the PLL to get locked. The PLL lock procedure duration, PLL Lock Cycles (PLC), may be in the range
of 0.5 ms.
3 Periodically sampled and not 100% tested.
4 RESET duration is measured during the time in which RESET is asserted, V
DD is valid, and the EXTAL input is
active and valid. When the VDD is valid, but the other “required RESET duration” conditions (as specified
above) have not been yet met, the device circuitry will be in an uninitialized state that can result in significant
power consumption and heat-up. Designs should minimize this state to the shortest possible duration.
Table 20. Reset, Stop, Mode Select, and Interrupt Timing (continued)
No.
Characteristics
Expression
Min
Max
Unit
VIH
RESET
Reset Value
All Pins
10
11
13
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