參數(shù)資料
型號: 951200201
廠商: ATMEL CORP
元件分類: 數(shù)字信號處理外設(shè)
英文描述: 40-BIT, DSP-FLOATING POINT PROCESSOR, QFP256
封裝: MQFP-256
文件頁數(shù): 25/50頁
文件大小: 702K
代理商: 951200201
31
TSC21020F
4153H–AERO–04/07
Clock Signal
Figure 3. Clock
Reset
Parameter
20 MHz
Unit
Min
Max
T
CK CLKIN Period
50
150
ns
tCKH CLKIN Width High
10
ns
t
CKL CLKIN Width Low
10
ns
Parameter
20 MHz
Frequency
Dependency(1)
Unit
Min
Max
Min
Max
t
WRST
(2) RESET Width Low
200
4t
CK
ns
t
SRST
(3) RESET Setup
before CLKIN High
29
50
29 + DT/2
30
ns
Notes:
1. DT = tCK - 50 ns
2. Applies after the power-up sequence is complete. At power up, the Internal Phase
Locked Loop requires no more than 1000CLKIN cycles while RESET is low, assum-
ing stable VDD and CLKIN (not including clock oscillator start-up time).
3. Specification only applies in cases where multiple TSC21020F processors are
required to execute in program counter lock-step (all processors start execution at
location 8 in the same cycle). See the Hardware Configuration chapter of the
ADSP-21020 User's Manual from Analog Devices for reset sequence information.
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