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參數(shù)資料
型號: ADSP-2171BSTZ-133
廠商: Analog Devices Inc
文件頁數(shù): 11/52頁
文件大?。?/td> 0K
描述: IC DSP CONTROLLER 16BIT 128TQFP
產(chǎn)品變化通告: Product Discontinuance 27/Oct/2011
Mold Change 11/Jul/2012
標(biāo)準(zhǔn)包裝: 1
系列: ADSP-21xx
類型: 定點
接口: 主機(jī)接口,串行端口
時鐘速率: 33MHz
非易失內(nèi)存: 外部
芯片上RAM: 10kB
電壓 - 輸入/輸出: 5.00V
電壓 - 核心: 5.00V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-TQFP(14x20)
包裝: 托盤
ADSP-2171/ADSP-2172/ADSP-2173
REV. A
–19–
ADSP-2171/ADSP-2172
Parameter
Min
Max
Unit
Clock Signals
tCK is defined as 0.5 tCKI. The ADSP-2171/ADSP-2172 uses an
input clock with a frequency equal to half the instruction rate; a
clock (which is equivalent to 60 ns) yields a 30 ns processor cycle
16.67 MHz input (equivalent to 33 MHz). tCK values within the
range of 0.5 tCKI period should be substituted for all relevant
timing parameters to obtain specification value.
Example: tCKH = 0.5tCK – 7 ns = 0.5 (30 ns) – 7 ns = 8 ns.
Timing Requirement:
tCKI
CLKIN Period
60
150
ns
tCKIL
CLKIN Width Low
20
ns
tCKIH
CLKIN Width High
20
ns
Switching Characteristic:
tCKL
CLKOUT Width Low
0.5tCK – 7
ns
tCKH
CLKOUT Width High
0.5tCK – 7
ns
tCKOH
CLKIN High to CLKOUT High
0
20
ns
Control Signals
Timing Requirement:
tRSP
RESET Width Low
5tCK
1
ns
NOTE
1Applies after power-up sequence is complete. Internal phase lock loop requires no more than 2000 CLKIN cycles assuming stable CLKIN (not including crystal
oscillator start-up time).
CLKIN
CLKOUT
t
CKIL
t
CKOH
t
CKH
t
CKL
t
CKI
t
CKIH
Figure 8. Clock Signals
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