Cirrus-logic CS61880 Instrukcja Użytkownika Pobierz pdf (Strona 61)

CS61880

DS450PP3 61

19.11 Switching Characteristics - Parallel Port (Multiplexed Mode)

Parameter Ref. # Min. Typ. Max Unit

Pulse Width AS

or ALE High 1 25 - - ns

Muxed Address Setup Time to AS

or ALE Low 2 10 - - ns

Muxed Address Hold Time 3 5 - - ns

Delay Time AS

or ALE to WR, RD or DS 45--ns

& R/W Setup Time Before WR, RD or DS Low 5 0 - - ns

& R/W Hold Time 6 0 - - ns

Pulse Width, WR

, RD, or DS 770- -ns

Write Data Setup Time 8 30 - - ns

Write Data Hold Time 9 30 - - ns

Output Data Delay Time from RD

or DS Low 10 - - 100 ns

Read Data Hold Time 11 5 - - ns

Delay Time WR

, RD, or DS to ALE or AS Rise 12 30 - - ns

or RD Low to RDY Low 13 - - 55 ns

or RD Low to RDY High 14 - - 100 ns

or RD High to RDY HIGH-Z 15 - - 40 ns

Low to ACK High 16 - - 65 ns

Low to ACK Low 17 - - 100 ns

High to ACK HIGH-Z 18 - - 40 ns

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 69 70

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Cirrus-logic CS61880 Instrukcja Użytkownika Strona 61