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PM3350-SW Datasheet(PDF) 35 Page - PMC-Sierra, Inc |
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PM3350-SW Datasheet(HTML) 35 Page - PMC-Sierra, Inc |
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35 / 224 page  ELAN 8X10 PM3350 ELAN 8 X10 DATA SHEET PMC-970109 ISSUE 3 8 PORT ETHERNET SWITCH PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY 33 Memory Interface 60 ns EDO DRAM AC Timing Parameter Description MIN TYP MAX Units TCKP MCLK period 20 nsec TARD Row address stable to MRAS* fall delay 15 nsec TRAW Row address width 35 nsec TACD Column address stable to CAS* fall delay 15 nsec TCAW Column address width 35 nsec TCP CAS* period 35 nsec TCPL CAS* low time 15 nsec TWDS Write data setup to CAS* fall 15 nsec TWDH Write data hold to CAS* fall 15 nsec TRDS Read data setup to CAS* fall 20 nsec TRDH Read data hold from CAS* fall 0 nsec TREC Read data HiZ to write data drive 15 nsec 150 ns EEPROM/EPROM AC Timing Parameter Description MIN TYP MAX Units TCKP MCLK period 20 ns TMAOD Max MADDR[17:0] delay from SYSCLK (read, first cycle) 21 ns TCEW Min MCS*[3:0] pulse width 190 ns TOEW Min MRD* pulse width 190 ns TMDIS Min MDATA[31:0] setup to SYSCLK (read, 11th cycle) 10 ns TRDH Min MDATA[31:0] hold from MRD* rise (read, 12th cycle) (by design, data is latched internally in the cycle before the rise of MRD*) 0 ns TWAW Min MADDR[17:0] setup to MWE*[3:0] rise 190 ns TWAH Min MADDR[17:0] hold from MWE*[3:0] rise 40 ns TWP Min MWE*[3:0] pulse width (write, second cycle) 190 ns TWDS Min MDATA[31:0] setup to MWE*[3:0] rise 180 ns TWDH Min MDATA[31:0] hold to MWE*[3:0] rise 15 ns |
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