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PM73121 Datasheet(PDF) 124 Page - PMC-Sierra, Inc

Part # PM73121
Description  AAL1 Segmentation And Reassembly Processor
PDF  223 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM73121 Datasheet(HTML) 124 Page - PMC-Sierra, Inc

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PMC-Sierra, Inc.
PM73121 AAL1gator II
PMC-980620
,VVXH
AAL1 SAR Processor
Data Sheet
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Figure 71.
Microprocessor RAM Write Cycle Timing
Symbol
Parameter
Signals
Min
Max
Unit
Taa
(See note
below)
Acknowledge assertion after /PROC_
CS or /PROC_WR; whichever comes
last
/PROC_ACK
5
29
SYS_CLK
periods
Tasu
Address setup to write pulse*
MEM_ADDR, /MEM_WE
10
ns
Tcea
/PROC_CS deassertion to /PROC_ACK
deassertion
/PROC_ACK
2
15
ns
Twd
Write pulse delay
/MEM_WE
8
25
ns
Tdsu
Data setup to write pulse off*
MEM_DATA
15
ns
Tded
Data enable delay
/SP_DATA_EN
7
25
ns
Taed
Address enable delay
/SP_ADD_EN
5
20
ns
Tq
Clock-to-output delay
SP_DATA_DIR
2
15
ns
Tddh
Taed
Taed
Tded
Tded
Tcea
Taa
Tq
Twd
Tdsu
Twd
Tasu
Tah
Tdh
Tasu17
NON_PROC READ CYCLE
PROC WRITE CYCLE
RECOVERY CYCLE
NON_PROC CYCLE
3
4
5
1, 2
SYS_CLK
PROC_ADD
PROC_DATA
/PROC_CS(i)
/PROC_WR(i)
ADDR17(i)
MEM_ADDR(i)
MEM_DATA(io)
/MEM_CS(o)
/MEM_WE(o)
/MEM_OE(o)
/PROC_ACK(i)
/SP_DATA_EN(o)
/SP_ADD_EN(o)
SP_DATA_DIR(o)



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