Hitachi IC25N080ATMR04-0 Specifications - Page 191
Write DMA EXT 35h
UPC - 000000114196
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13.43 Write DMA EXT (35h) Table 126: Write DMA (35h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Low Data High Current Feature Previous Sector Count Current Previous V V V V V V V V V V V V V V V V Current LBA Low Previous V V V V V V V V V V V V V V V V Current LBA Mid Previous V V V V V V V V V V V V V V V V Current LBA High Previous V V V V V V V V V V V V V V V V Device - 1 - D - - - - Command 0 0 1 1 0 1 0 1 76 CRC UNC V0 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 0 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Low Data High Error see below Sector Count LBA Low LBA Mid LBA High Device Status HOB=0 HOB=1 HOB=0 HOB=1 HOB=0 HOB=1 HOB=0 HOB=1 V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V See below ... Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V The Write DMA Ext command transfers one or more sectors of data from the host to the device, then the data is written to the disk media. The sectors of data are transferred through the Data Register 16 bits at a time. The host initializes a slave-DMA channel prior to issuing the command. Data transfers are qualified by DMARQ and are performed by the slave-DMA channel. The device issues only one interrupt per command to indicate that data transfer has terminated and status is available. If an uncorrectable error occurs, the write will be terminated at the failing sector. Output parameters to the device Sector Count Current The number of continuous sectors to be transferred low order, bits (7-0). Sector Count Previous The number of continuous sectors to be transferred high order bits (15:8). If zero is speci- fied in the Sector Count register, then 65,536 sectors will be transferred. LBA Low Current LBA (7-0) LBA Low Previous LBA (31-24) LBA Mid Current LBA (15-8) LBA Mid Previous LBA (39-32) Travelstar 80GN Hard Disk Drive Specification 181