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參數資料
型號: ADSP-2188
廠商: Analog Devices, Inc.
元件分類: 基準電壓源/電流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 無電容,NMOS管,150mA的低壓差穩壓器的反向電流保護
文件頁數: 29/48頁
文件大?。?/td> 1571K
代理商: ADSP-2188
–29–
REV. 0
ADSP-218xN Series
Bus Request–Bus Grant
Table 17. Bus Request–Bus Grant
Parameter
Timing Requirements:
t
BH
t
BS
Switching Characteristics:
t
SD
t
SDB
t
SE
t
SEC
t
SDBH
t
SEH
Min
Max
Unit
BR Hold after CLKOUT High
1
BR Setup before CLKOUT Low
1
0.25t
CK
+ 2
0.25t
CK
+ 8
ns
ns
CLKOUT High to xMS, RD, WR Disable
2
xMS, RD, WR Disable to BG Low
BG High to xMS, RD, WR Enable
xMS, RD, WR Enable to CLKOUT High
xMS, RD, WR Disable to BGH Low
3
BGH High to xMS, RD, WR Enable
3
0.25t
CK
+ 8
ns
ns
ns
ns
ns
ns
0
0
0.25t
CK
– 3
0
0
1
BR is an asynchronous signal. If BR meets the setup/hold requirements, it will be recognized during the current clock cycle; otherwise the signal will be
recognized on the following cycle. Refer to the
ADSP-2100 Family User’s Manual
for BR/BG cycle relationships.
2
xMS = PMS, DMS, CMS, IOMS, BMS.
3
BGH is asserted when the bus is granted and the processor or BDMA requires control of the bus to continue.
Figure 26. Bus Request–Bus Grant
CLKOUT
t
SD
t
SDB
t
SE
t
SEC
t
SDBH
t
SEH
t
BS
BR
t
BH
CLKOUT
PMS
,
DMS
BMS
,
RD
IOMS
BG
BGH
相關PDF資料
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ADSP-2188NBCA-320 Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
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