参数资料
型号: ADSP-BF504KCPZ-4F
厂商: Analog Devices Inc
文件页数: 28/80页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 88LFCSP
视频文件: Blackfin? BF50x Processor Family
标准包装: 1
系列: Blackfin®
类型: 定点
接口: CAN,EBI/EMI,I²C,IrDA,PPI,SPI,SPORT,UART/USART
时钟速率: 400MHz
非易失内存: 闪存(16MB)
芯片上RAM: 68kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.31V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 88-VFQFN 裸露焊盘,CSP
供应商设备封装: 88-LFCSP(12x12)
包装: 托盘
Rev. A
|
Page 34 of 80
|
July 2011
ADSP-BF504/ADSP-BF504F/ADSP-BF506F
Parallel Peripheral Interface Timing
Figure 22 on Page 40 describe parallel peripheral interface
operations.
Table 27. Parallel Peripheral Interface Timing
Parameter
V
DDEXT = 1.8 V
V
DDEXT = 2.5 V/3.3 V
Min
Max
Min
Max
Unit
Timing Requirements
tPCLKW
PPI_CLK Width1
tSCLK –1.5
ns
tPCLK
PPI_CLK Period1
2 × tSCLK –1.5
ns
Timing Requirements—GP Input and Frame Capture Modes
tPSUD
External Frame Sync Startup Delay
2
4 × tPCLK
ns
tSFSPE
External Frame Sync Setup Before PPI_CLK
(Nonsampling Edge for Rx, Sampling Edge for Tx)
6.7
ns
tHFSPE
External Frame Sync Hold After PPI_CLK
1.5
ns
tSDRPE
Receive Data Setup Before PPI_CLK
4.1
3.5
ns
tHDRPE
Receive Data Hold After PPI_CLK
2
1.6
ns
Switching Characteristics—GP Output and Frame Capture Modes
tDFSPE
Internal Frame Sync Delay After PPI_CLK
8.7
8.0
ns
tHOFSPE
Internal Frame Sync Hold After PPI_CLK
1.7
ns
tDDTPE
Transmit Data Delay After PPI_CLK
8.7
8.0
ns
tHDTPE
Transmit Data Hold After PPI_CLK
2.3
1.9
ns
1 PPI_CLK frequency cannot exceed fSCLK/2
2 The PPI port is fully enabled 4 PPI clock cycles after the PAB write to the PPI port enable bit. Only after the PPI port is fully enabled are external frame syncs and data words
guaranteed to be received correctly by the PPI peripheral.
Figure 13. PPI with External Frame Sync Timing
Figure 14. PPI GP Rx Mode with External Frame Sync Timing
PPI_CLK
PPI_FS1/2
tPSUD
tPCLK
tSFSPE
DATA SAMPLED /
FRAME SYNC SAMPLED
DATA SAMPLED /
FRAME SYNC SAMPLED
PPI_DATA
PPI_CLK
PPI_FS1/2
tHFSPE
tHDRPE
tSDRPE
tPCLKW
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