参数资料
型号: ADSP-2171BSTZ-133
厂商: Analog Devices Inc
文件页数: 11/52页
文件大小: 0K
描述: IC DSP CONTROLLER 16BIT 128TQFP
产品变化通告: Product Discontinuance 27/Oct/2011
Mold Change 11/Jul/2012
标准包装: 1
系列: ADSP-21xx
类型: 定点
接口: 主机接口,串行端口
时钟速率: 33MHz
非易失内存: 外部
芯片上RAM: 10kB
电压 - 输入/输出: 5.00V
电压 - 核心: 5.00V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 托盘
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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