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SC2200 Datasheet(PDF) 398 Page - National Semiconductor (TI) |
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SC2200 Datasheet(HTML) 398 Page - National Semiconductor (TI) |
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398 / 433 page  www.national.com 398 Revision 3.0 Electrical Specifications (Continued) All timing parameters are measured at the connector of the device to which the parameter applies. For example, the sender stops generating STROBE edges tRFS after the negation of DMARDY. Both STROBE and DMARDY timing measurements are taken at the connector of the sender. Figure 8-27. Initiating an UltraDMA Data in Burst Timing Diagram tUI tACK tENV tFS tFS tZAD tACK tZIORDY tAZ tACK tDVS tDVH tENV tZAD IDE_DATA[15:0] IDE_ADDR[2:0] IDE_CS[0:1] IDE_REQ0 (device) IDE_DACK0# (host) IDE_IOW0# (STOP0) (host) IDE_IOR0# (HDMARDY0#) (host) IDE_IRDY0 (DSTROBE0) (device) Note: The definitions for the IDE_IOW[0:1]# (STOP[0:1]), IDE_IOR[0:1]# (HDMARDY[0:1]#) and IDE_IRDY[0:1] (DSTROBE[0:1]) signal lines are not in effect until IDE_REQ[0:1] and IDE_DACK[0:1]# are asserted. |
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