参数资料
型号: DSPB56725AF
厂商: Freescale Semiconductor
文件页数: 7/48页
文件大小: 0K
描述: DSP 24BIT AUD 250MHZ 80-LQFP
标准包装: 90
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 250MHz
非易失内存: 外部
芯片上RAM: 112kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 80-LQFP
供应商设备封装: 80-LQFP(14x14)
包装: 托盘
Symphony DSP56724/ DSP56725 Multi-Core Audio Processors, Rev. 2
Freescale Semiconductor
15
1.2.1
Serial Host Interface SPI Protocol Timing
Table 9 lists the serial host interface SPI protocol timing.
Table 9. Serial Host Interface SPI Protocol Timing
No.
Characteristics1,3,4
Mode
Filter Mode
Expression
Min
Max
Unit
23
Minimum serial clock cycle = tSPICC(min)
Master/Slave
Bypassed
10
× TC + 9
59.0
ns
Very Narrow
10
× TC + 9
59.0
ns
Narrow
10
× TC + 133
183.0
ns
Wide
10
× TC + 333
383.0
ns
XX
Tolerable Spike width on data or clock in.
Bypassed
0
ns
Very Narrow
10
ns
Narrow
50
ns
Wide
100
ns
24
Serial clock high period
Master
Bypassed
0.5
× (tSPICC)
29.5
ns
Very Narrow
0.5
× (tSPICC)
29.5
ns
Narrow
0.5
× (tSPICC)
91.5
ns
Wide
0.5
× (tSPICC)
191.5
ns
Slave
Bypassed
2.0
× TC + 19.6
29.6
ns
Very Narrow
2.0
× TC + 19.6
29.6
ns
Narrow
2.0
× TC + 86.6
96.6
ns
Wide
2.0
× TC + 186.6
196.6
ns
25
Serial clock low period
Master
Bypassed
0.5
× (tSPICC)
29.5
ns
Very Narrow
0.5
× (tSPICC)
29.5
ns
Narrow
0.5
× (tSPICC)
91.5
ns
Wide
0.5
× tSPICC)
191.5
ns
Slave
Bypassed
2.0
× TC + 19.6
29.6
ns
Very Narrow
2.0
× TC + 19.6
29.6
ns
Narrow
2.0
× TC + 86.6
96.6
ns
Wide
2.0
× TC + 186.6
196.6
ns
26
Serial clock rise/fall time
Master
Slave
5
ns
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