GP2021 Datasheet, PDF (49/62 Pages) Mitel Networks Corporation – GPS 12 channel Correlator Advance Information

MCLK
DBE
D<15:0>
A<22:20>
A<9:0>
NROM
NW
dbHnwH
adVnroL
ARM data
nroLnwL
nroL
nwL
nwHmcL
nwHnroH
nwH
GP2021
Description
NROM Low
NROM Low to NW0–3 Low
DBE High to NW0–3 High
NW0–3 Low
NW0–3 High to MCLK Low
NW0–3 High to NROM High
NW0–3 High
Address Valid to NROM Low
Note: 1. +50ns / extra wait state
MCLK
DBE
A<22:20>
A<9:0>
NROM
NRD
D<15:0>
Description
NROM Low to MCLK Low
NRD Low to MCLK Low
NRD High to DBE High
MCLK Low to NRD High
Address Valid to NROM Low
Note: 1. +50ns / extra wait state
Fig. 27 : ARM Mode RAM Read
Symbol
τ _nroL
τ_nroLnwL
τ_dbHnwH
τ _nwL
τ _nwHmcL
τ_nwHnroH
τ_nwH
τ_adVnroL
Min
Max
100
11
21.5
52
57
50
51
16
23
27.5
39
47
49
2
7.5
nroLmcL
nrdLmcL
adVnroL
ROM data
Fig. 27 : ARM Mode ROM Read
Symbol
τ_nroLmcL
τ_nrdLmcL
τ_nrdHdbH
τ_mcLnrdH
τ_adVnroL
Min
Max
48
74.5
48
50
33
45
2.5
10
2.5
9
Units
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1
1
1
nrdHdbH
mcLnrdH
Units
ns
ns
ns
ns
ns
Notes
1
1
49