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LPC47M182 Datasheet(PDF) 69 Page - SMSC Corporation |
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LPC47M182 Datasheet(HTML) 69 Page - SMSC Corporation |
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69 / 223 page  Advanced I/O Controller with Motherboard GLUE Logic Datasheet SMSC LPC47M182 69 Revision 1.8 SMSC/Non-SMSC Register Sets (02-24-05) DATASHEET Table 6.23 - Verify Command Result Phase Table MT EC SC/EOT VALUE TERMINATION RESULT 0 0 SC = DTL EOT <= # Sectors Per Side Success Termination Result Phase Valid 0 0 SC = DTL EOT > # Sectors Per Side Unsuccessful Termination Result Phase Invalid 0 1 SC <= # Sectors Remaining AND EOT <= # Sectors Per Side Successful Termination Result Phase Valid 0 1 SC > # Sectors Remaining OR EOT > # Sectors Per Side Unsuccessful Termination Result Phase Invalid 1 0 SC = DTL EOT <= # Sectors Per Side Successful Termination Result Phase Valid 1 0 SC = DTL EOT > # Sectors Per Side Unsuccessful Termination Result Phase Invalid 1 1 SC <= # Sectors Remaining AND EOT <= # Sectors Per Side Successful Termination Result Phase Valid 1 1 SC > # Sectors Remaining OR EOT > # Sectors Per Side Unsuccessful Termination Result Phase Invalid Note: If MT is set to “1” and the SC value is greater than the number of remaining formatted sectors on Side 0, verifying will continue on Side 1 of the disk. 6.17 Format A Track The Format command allows an entire track to be formatted. After a pulse from the nINDEX pin is detected, the FDC starts writing data on the disk including gaps, address marks, ID fields, and data fields per the IBM System 34 or 3740 format (MFM or FM respectively). The particular values that will be written to the gap and data field are controlled by the values programmed into N, SC, GPL, and D which are specified by the host during the command phase. The data field of the sector is filled with the data byte specified by D. The ID field for each sector is supplied by the host; that is, four data bytes per sector are needed by the FDC for C, H, R, and N (cylinder, head, sector number and sector size respectively). After formatting each sector, the host must send new values for C, H, R and N to the FDC for the next sector on the track. The R value (sector number) is the only value that must be changed by the host after each sector is formatted. This allows the disk to be formatted with nonsequential sector addresses (interleaving). This incrementing and formatting continues for the whole track until the FDC encounters a pulse on the nINDEX pin again and it terminates the command. Table 6.24 contains typical values for gap fields that are dependent upon the size of the sector and the number of sectors on each track. Actual values can vary due to drive electronics. |
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