参数资料
型号: ADSP-21469KBCZ-3
厂商: Analog Devices Inc
文件页数: 39/72页
文件大小: 0K
描述: IC DSP 32/40BIT 400MHZ 324BGA
产品变化通告: Pin Function Change 08/Mar/2012
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI,EBI/EMI,I²C,SCI,SPI,SSP,UART/USART
时钟速率: 400MHz
非易失内存: 外部
芯片上RAM: 5Mb
电压 - 输入/输出: 3.30V
电压 - 核心: 1.05V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 324-BGA,CSPBGA
供应商设备封装: 324-CSPBGA
包装: 托盘
Rev. 0
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Page 44 of 72
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June 2010
ADSP-21469
Parallel Data Acquisition Port (PDAP)
The timing requirements for the PDAP are provided in
Table 40. PDAP is the parallel mode operation of channel 0 of
the IDP. For details on the operation of the PDAP, see the
PDAP chapter of the ADSP-214xx SHARC Processor Hardware
Reference. Note that the 20 bits of external PDAP data can be
provided through the AMI_ADDR23–4 pins or over the DAI
pins.
Table 40. Parallel Data Acquisition Port (PDAP)
Parameter
Min
Max
Unit
Timing Requirements
tSPHOLD
1
PDAP_HOLD Setup Before PDAP_CLK Sample Edge
2.5
ns
tHPHOLD
1
PDAP_HOLD Hold After PDAP_CLK Sample Edge
2.5
ns
tPDSD
1
PDAP_DAT Setup Before Serial Clock PDAP_CLK Sample Edge
3.85
ns
tPDHD
1
PDAP_DAT Hold After Serial Clock PDAP_CLK Sample Edge
2.5
ns
tPDCLKW
Clock Width
(tPCLK × 4) ÷ 2 – 3
ns
tPDCLK
Clock Period
tPCLK × 4
ns
Switching Characteristics
tPDHLDD
Delay of PDAP Strobe After Last PDAP_CLK Capture Edge for a Word
2 × tPCLK + 3
ns
tPDSTRB
PDAP Strobe Pulse Width
2 × tPCLK – 1
ns
1 Data source pins are AMI_ADDR23–4 or DAI pins. Source pins for serial clock and frame sync are 1) AMI_ADDR3–2 pins, 2) DAI pins.
Figure 29. PDAP Timing
DAI_P20–1
(PDAP_CLK)
SAMPLE EDGE
DAI_P20–1
(PDAP_HOLD)
DAI_P20–1
(PDAP_STROBE)
tPDSTRB
tPDHLDD
tPDHD
tPDSD
tSPHOLD
tHPHOLD
tPDCLK
tPDCLKW
DAI_P20–1/
ADDR23–4
(PDAP_DATA)
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