ADSP-2141L View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADSP-2141L' PDF : 39 Pages View PDF
ADSP-2141L
Parameter
External Memory Write: ADSP-2141L DSP Initiated
Switching Characteristics:
tA
Clock to Address, xMS
tDW
Data Setup Before Write Deasserted
tDH
Data Hold After Write Deasserted
tWP
Write Pulsewidth
tWDE
Write Low to Data Enabled
tASW
Address, xMS Setup Before Write Low
tDDR
Data Disable Before Write/Read Low
tCWR
Clock High to Write Low
tAW
Address, xMS Setup Before Write High
tAH
Address, xMS Hold After Clock
tWRA
Address, xMS Hold After Write High
tWWR
Write High to Read/Write Low
1. If wait-state(s) added, then referenced to last wait-state clock interval.
2. w = DSP wait states × tCK .
DSP CLOCK
OUT
25ns (REF @ 40MHz)
tASW
Min
Max
1
0.5tCK – 7 + w
0.25tCK – 3.5
0.5tCK – 5 + w
0
0.25tCK – 4
0.25tCK – 4
0.25tCK
0.75tCK – 6 + w
1
0.25tCK – 4
0.5tCK – 5
6
0.5tCK + 9
t AH
EXT. ADDR
(A13–0)
PMS, DMSx,
BMS, IOMS,
CMS
tA
tCWR
tAW
t WP
tWRA
t WWR
EXT. WR
EXT. DATA
(D23–0)
tWDE
t DW
t DH
t DDR
Figure 15. External Memory Write: ADSP-2141L DSP Initiated
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
REV. 0
–25–
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