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CS22220 데이터시트(PDF) 29 Page - Cirrus Logic |
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CS22220 데이터시트(HTML) 29 Page - Cirrus Logic |
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29 / 34 page ![]() CS22220 Wireless PCMCIA Controller 29 of 34 DS557PP2 Rev. 3.0 www.cirrus.com Table 11. Common Memory ‘Write’ Timing Specification 100 ns Speed Version Item Symbol Min Max Write Cycle time tcW 100 Write Pulse Width tw (WE) 60 Address Setup Time tsu (A) 10 Address Setup Time for PC_NWE tsu (A-WEH) 70 Card Enable Setup Time for PC_NWE tsu (CE-WEH) 70 Data Setup time for PC_NWE tsu (D-WEH) 40 Data Hold Time th (D) 15 Write Recovery Time trec (WE) 15 Output Disable Time from PC_NWE tdis (WE) 50 Output Disable Time from PC_NOE tdis (OE) 50 Output Enable Time from PC_NWE ten (WE) 5 Output Enable Time from PC_NOE ten (OE) 5 Output Enable Setup from PC_NWE tsu (OE-WE) 10 Output Enable Hold from PC_NWE th (OE-WE) 10 Card Enable Setup Time tsu (CE) 0 Card Enable Hold Time th (CE) 15 PC_NWAIT Valid from PC_NWE tv (WT-WE) 35 PC_NWAIT Pulse Width tw (WT) 12 us PC_NWE High from PC_NWAIT Released 0 Table 12. Attribute Memory ‘Write’ Timing Specification 600 ns Speed Version Item Symbol Min Max Write Cycle time tcW 600 Write Pulse Width tw (WE) 300 Address Setup Time tsu (A) 50 Address Setup Time for PC_NWE tsu (A-WEH) 350 Card Enable Setup Time for PC_NWE tsu (CE-WEH) 300 Data Setup time for PC_NWE tsu (D-WEH) 150 Data Hold Time th (D) 70 Write Recovery Time trec (WE) 70 Output Disable Time from PC_NWE tdis (WE) 150 Output Disable Time from PC_NOE tdis (OE) 150 Output Enable Time from PC_NWE ten (WE) 5 Output Enable Time from PC_NOE ten (OE) 5 Output Enable Setup from PC_NWE tsu (OE-WE) 35 Output Enable Hold from PC_NWE th (OE-WE) 35 Card Enable Setup Time tsu (CE) 0 Card Enable Hold Time th (CE) 35 PC_NWAIT Valid from PC_NWE tv (WT-WE) 100 PC_NWAIT Pulse Width tw (WT) 12 us PC_NWE High from PC_NWAIT Released 0 |
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