参数资料
型号: GP2021
厂商: Mitel Networks Corporation
英文描述: GPS 12 channel Correlator Advance Information
中文描述: 全球定位系统12通道相关器研究进展信息
文件页数: 44/62页
文件大小: 372K
代理商: GP2021
49
GP2021
MCLK
DBE
D<15:0>
A<22:20>
NROM
NW
ARM data
dbHnwH
nwHmcL
adVnroL
nroLnwL
nroL
nwL
nwH
A<9:0>
nwHnroH
Fig. 27 : ARM Mode RAM Read
Description
Symbol
Min
Max
Units
Notes
NROM Low
τ
nroL
100
ns
1
NROM Low to NW0–3 Low
τ
nroLnwL
11
21.5
ns
DBE High to NW0–3 High
τ
dbHnwH
52
57
ns
1
NW0–3 Low
τ
nwL
50
51
ns
1
NW0–3 High to MCLK Low
τ
nwHmcL
16
23
ns
NW0–3 High to NROM High
τ
nwHnroH
27.5
39
ns
NW0–3 High
τ
nwH
47
49
ns
Address Valid to NROM Low
τ
adVnroL
2
7.5
ns
Note: 1. +50ns / extra wait state
ROM data
D<15:0>
NRD
MCLK
NROM
A<22:20>
DBE
nroLmcL
nrdLmcL
adVnroL
nrdHdbH
mcLnrdH
A<9:0>
Fig. 27 : ARM Mode ROM Read
Description
Symbol
Min
Max
Units
Notes
NROM Low to MCLK Low
τ
nroLmcL
48
74.5
ns
1
NRD Low to MCLK Low
τ
nrdLmcL
48
50
ns
1
NRD High to DBE High
τ
nrdHdbH
33
45
ns
MCLK Low to NRD High
τ
mcLnrdH
2.5
10
ns
Address Valid to NROM Low
τ
adVnroL
2.5
9
ns
Note: 1. +50ns / extra wait state
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