参数资料
型号: ADSP-21371BSWZ-2B
厂商: Analog Devices Inc
文件页数: 28/48页
文件大小: 0K
描述: IC DSP 32BIT 266MHZ 208-LQFP
产品培训模块: SHARC Processor Overview
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI
时钟速率: 266MHz
非易失内存: ROM(512 kB)
芯片上RAM: 128kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 208-LQFP 裸露焊盘
供应商设备封装: 208-LQFP-EP(28x28)
包装: 托盘
ADSP-21371
Parallel Data Acquisition Port (PDAP)
The timing requirements for the PDAP are provided in
Table 32. 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-21368 SHARC Processor Hardware
Table 32. Parallel Data Acquisition Port (PDAP)
Reference. Note that the most significant 16 bits of external
PDAP data can be provided through the DATA31–16 pins. The
remaining four bits can only be sourced through DAI_P4–1.
The timing below is valid at the DATA31–16 pins.
Parameter
Min
Max
Unit
Timing Requirements
tSPCLKEN
1
PDAP_CLKEN Setup Before PDAP_CLK Sample Edge
tHPCLKEN
1
PDAP_CLKEN Hold After PDAP_CLK Sample Edge
tPDSD
1
PDAP_DAT Setup Before SCLK PDAP_CLK Sample Edge
tPDHD
1
PDAP_DAT Hold After SCLK PDAP_CLK Sample Edge
tPDCLKW
Clock Width
tPDCLK
Clock Period
Switching Characteristics
tPDHLDD
Delay of PDAP Strobe After Last PDAP_CLK Capture Edge for a Word
tPDSTRB
PDAP Strobe Pulse Width
2.5
3.85
2.5
7
24
2 × tPCLK + 3
2 × tPCLK – 1
ns
1 Source pins of DATA are DATA31–12 or DAI pins. Source pins for SCLK and FS are: 1) DAI pins, 2) CLKIN through PCG, or 3) DAI pins through PCG.
DAI_P20
-1
(PDAP_CLK)
DAI_P20
-1
(PDAP_CLKEN)
DATA
DAI_P20
-1
(PDAP_STROBE)
SAMPLE EDGE
tPDSD
tPDHD
tSPCLKEN
tHPCLKEN
tPDCLKW
tPDSTRB
tPDHLDD
tPDCLK
Figure 22. PDAP Timing
Rev. 0
|
Page 34 of 48
|
June 2007
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