GP2021 Datasheet, PDF (18/62 Pages) Mitel Networks Corporation – GPS 12 channel Correlator Advance Information

GP2021
20MHz
INTERNAL
CLOCK
MCLK
ARM_ALE
A<22:20>, A<9:0>
NRW
NMREQ
NBW
DBE
INTERNAL
WRITE
INTERNAL
READ
D<15:0>
1 WAIT STATE
VALID
VALID
Fig.15 Peripheral functions write/read Cycle
20MHz
INTERNAL
CLOCK
MCLK
ARM_ALE
A<22:20>, A<9:2>
NRAM
NW0
NW1
NW2
NW3
DBE
NRD
D<15:0>
NRW
NBW
VALID
VALID
VALID
VALID
VALID
VALID
NOTE: This diagram assumes NMREQ is Low.
Fig.16 RAM read/write Cycle
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