参数资料
型号: ADSP-21489KSWZ-4A
厂商: Analog Devices Inc
文件页数: 37/68页
文件大小: 0K
描述: IC CCD SIGNAL PROCESSOR 100LQFP
标准包装: 1
系列: SHARC®
类型: 浮点
接口: EBI/EMI,DAI,I²C,SPI,SPORT,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: 1.10V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 100-LQFP 裸露焊盘
供应商设备封装: 100-LQFP-EP(14x14)
包装: 托盘
Rev. B
|
Page 42 of 68
|
March 2013
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 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 PDAP_CLK Sample Edge
3.85
ns
tPDHD
1
PDAP_DAT Hold After 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 – 1.5
ns
1 Source pins of PDAP_DATA are ADDR23–4 or DAI pins. Source pins for PDAP_CLK and PDAP_HOLD are 1) DAI pins; 2) CLKIN through PCG; 3) DAI pins through
PCG; or 4) ADDR3–2 pins.
Figure 26. 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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