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參數資料
型號: ADSP-21262SKSTZ200
廠商: ANALOG DEVICES INC
元件分類: 數字信號處理
英文描述: SHARC Processor
中文描述: 16-BIT, 66.67 MHz, OTHER DSP, PQFP144
封裝: LEAD FREE, MS-026BFB, LQFP-144
文件頁數: 19/44頁
文件大小: 1295K
代理商: ADSP-21262SKSTZ200
ADSP-21262
Rev. A
|
Page 19 of 44
|
May 2004
Clock Input
Clock Signals
The ADSP-21262 can use an external clock or a crystal. See
CLKIN pin description. The programmer can configure the
ADSP-21262 to use its internal clock generator by connecting
the necessary components to CLKIN and XTAL.
Figure 8
shows
the component connections used for a crystal operating in fun-
damental mode. Note that the clock rate is achieved using a
12.5 MHz crystal and a PLL multiplier ratio 16:1
(CCLK:CLKIN).
Table 10. Clock Input
Parameter
200 MHz
Min
Unit
Max
Timing Requirements
t
CK
t
CKL
t
CKH
t
CKRF
t
CCLK
CLKIN Period
CLKIN Width Low
CLKIN Width High
CLKIN Rise/Fall (0.4 V – 2.0 V)
CCLK Period
3
15
1
6
1
6
1
5
160
2
80
2
80
2
3
10
ns
ns
ns
ns
ns
1
Applies only for CLKCFG1-0 = 00 and default values for PLL control bits in PMCTL.
2
Applies only for CLKCFG1-0 = 01 and default values for PLL control bits in PMCTL.
3
Any changes to PLL control bits in the PMCTL register must meet core clock timing specification t
CCLK
.
Figure 7. Clock Input
CLKIN
t
CK
t
CKH
t
CKL
Figure 8. 200 MHz Operation with a 12.5 MHz Fundamental Mode
Crystal
CLKIN
XTAL
C1
C2
X1
NOTE: C1 AND C2 ARE SPECIFIC TO CRYSTAL SPECIFIED FOR X1.
CONTACT CRYSTAL MANUFACTURER FOR DETAILS. CRYSTAL
SELECTION MUST COMPLY WITH CLKCFG1-0 = 10 OR = 01.
1M
相關PDF資料
PDF描述
ADSP-21262 SHARC Processor
ADSP-21262SKBC-200 SHARC Processor
ADSP-21262SKBCZ200 SHARC Processor
ADSP-21266 SHARC Embedded Processor
ADSP-21266SKBC-2B SHARC Embedded Processor
相關代理商/技術參數
參數描述
ADSP-21262SKSTZ200 制造商:Analog Devices 功能描述:IC 32-BIT DSP
ADSP-21266 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Embedded Processor
ADSP-21266_07 制造商:AD 制造商全稱:Analog Devices 功能描述:Embedded Processor
ADSP-21266KSTZ-1C 制造商:Analog Devices 功能描述:- Trays
ADSP-21266KSTZ-2C 制造商:Analog Devices 功能描述:- Trays
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