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MOTOROLA M68040 USER’S MANUAL 11-5
11.7 INPUT AC TIMING SPECIFICATIONS (see Figures 11-3 to 11-7)
25 MHz 33 MHz 40 MHz
Num Characteristic Min Max Min Max Min. Max. Unit
15 Data-In Valid to BCLK (Setup) 5 4 3 ns
16 BCLK to Data-In Invalid (Hold) 4 4 3 ns
17 BCLK to Data-In High Impedance
(Read Followed by Write) 49 36.5 — 30.25 ns
22a TA Valid to BCLK (Setup) 10 10 8 ns
22b TEA Valid to BCLK (Setup) 10 10 9 ns
22c TCI Valid to BCLK (Setup) 10 10 9 ns
22d TBI Valid to BCLK (Setup) 11 10 9 ns
23 BCLK to TA, TEA, TCI, TBI Invalid (Hold) 2 2 2 ns
24 AVEC Valid to BCLK (Setup) 5 5 5 ns
25 BCLK to AVEC Invalid (Hold) 2 2 2 ns
31 DLE Width High 8 8 8 ns
32 Data-In Valid to DLE (Setup) 2 2 2 ns
33 DLE to Data-In Invalid (Hold) 8 8 8 ns
34 BCLK to DLE Hold 3 3 3 ns
35 DLE High to BCLK 16 12 12 ns
36 Data-In Valid to BCLK (DLE Mode Setup) 5 5 5 ns
37 BCLK to Data-In Invalid (DLE Mode Hold) 4 4 4 ns
41a BB Valid to BCLK (Setup) 7 7 7 ns
41b BG Valid to BCLK (Setup) 8 7 7 ns
41c CDIS, MDIS Valid to BCLK (Setup) 10 8 8 ns
41d IPL≈ Valid to BCLK (Setup) 4 3 3 ns
42 BCLK to BB, BG, CDIS, IPL≈, MDIS Invalid (Hold) 2 2 2 ns
44a Address Valid to BCLK (Setup) 8 7 7 ns
44b SIZx Valid to BCLK (Setup) 12 8 8 ns
44c TTx Valid to BCLK (Setup) 6 8.5 8.5 ns
44d R/W Valid to BCLK (Setup) 6 5 5 ns
44e SCx Valid to BCLK (Setup) 10 11 8 ns
45 BCLK to Address,SIZx, TTx, R/W, SCx Invalid (Hold) 2 2 2 ns
46 TS Valid to BCLK (Setup) 5 9 7 ns
47 BCLK to TS Invalid (Hold) 2 2 2 ns
49 BCLK to BB High Impedance
(MC68040 Assumes Bus Mastership) —9—9—9ns
51 RSTI Valid to BCLK 5 4 4 ns
52 BCLK to RSTI Invalid 2 2 2 ns
53 Mode Select Setup to RSTI Negated 20 20 20 ns
54 RSTI Negated to Mode Selects Invalid 2 2 2 ns
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