參數(shù)資料
型號: ADSP-21469KBCZ-4
廠商: Analog Devices Inc
文件頁數(shù): 39/72頁
文件大?。?/td> 0K
描述: IC DSP 32/40BIT 450MHZ 324BGA
產(chǎn)品變化通告: Pin Function Change 08/Mar/2012
標(biāo)準(zhǔn)包裝: 1
系列: SHARC®
類型: 浮點(diǎn)
接口: DAI,DPI,EBI/EMI,I²C,SCI,SPI,SSP,UART/USART
時(shí)鐘速率: 450MHz
非易失內(nèi)存: 外部
芯片上RAM: 5Mb
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.10V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 324-BGA,CSPBGA
供應(yīng)商設(shè)備封裝: 324-CSPBGA
包裝: 托盤
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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