Fujitsu MPD3173AT Product Manual - Page 155
Ultra DMA data burst timing requirements, Table 5.16, Ultra DMA data burst timing
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5.6.3.2 Ultra DMA data burst timing requirements Table 5.16 Ultra DMA data burst timing requirements (1 of 2) NAME t2CYCTYP tCYC t2CYC tDS tDH tDVS tDVH tFS tLI tMLI tUI tAZ tZAH tZAD tENV tSR tRFS tRP tIORDYZ MODE 0 (in ns) MIN MAX 240 112 230 15 5 70 6 0 230 0 150 20 0 10 20 0 20 70 50 75 160 20 MODE 1 (in ns) MIN MAX 160 73 154 10 5 48 6 0 200 0 150 20 0 10 20 0 20 70 30 70 125 20 MODE 2 (in ns) MIN MAX 120 54 115 7 5 30 6 0 170 0 150 20 0 10 20 0 20 70 20 60 100 20 MODE 3 (in ns) MIN MAX 90 39 86 7 5 20 6 0 130 0 100 20 0 10 20 0 20 55 NA 60 100 20 MODE 4 (in ns) COMMENT MIN MAX (see Notes 1 and 2) 60 Typical sustained average two cycle time 25 Cycle time allowing for asymmetry and clock variations (from STROBE edge to STROBE edge) 57 Two cycle time allowing for clock variations (from rising edge to next rising edge or from falling edge to next falling edge of STROBE) 5 Data setup time (at recipient) (see Note 4) 5 Data hold time (at recipient) (see Note 4) 6 Data valid setup time at sender (from data valid until STROBE edge) (see Note 5) 6 Data valid hold time at sender (from STROBE edge until data may become invalid) (see Note 5) 0 120 First STROBE time (for device to first negate DSTROBE from STOP during a data in burst) 0 100 Limited interlock time (see Note 3) 20 Interlock time with minimum (see Note 3) 0 Unlimited interlock time (see Note 3) 10 Maximum time allowed for output drivers to release (from asserted or negated) 20 Minimum delay time required for output 0 Drivers to assert or negate (from released) 20 55 Envelope time (from DMACK- to STOP and HDMARDY- during data in burst initiation and from DMACK to STOP during data out burst initiation) NA STROBE-to-DMARDY-time (if DMARDY- is negated before this long after STROBE edge, the recipient shall receive no more than one additional data word) 60 Ready-to-final-STROBE time (no STROBE edges shall be sent this long after negation of DMARDY-) 100 Ready-to-pause time (that recipient shall wait to pause after negating DMARDY-) 20 Maximum time before releasing IORDY 5 - 88 C141-E069-02EN