Fujitsu MJA2500BH Maintenance Manual - Page 89
Register - Host to Device, Register - Host to Device FIS layout, LBA Mid exp
View all Fujitsu MJA2500BH manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 89 highlights
5.2 Logical Interface 5.2.3.2 Register - Host to Device The Register - Host to Device FIS has the following layout: 33222222222211111111119876543210 1098765432109876543210 0 Features Command C R R Reserved (0) FIS Type (27h) 1 Device LBA High LBA Mid LBA Low Features (exp) 2 LBA High (exp) LBA Mid (exp) LBA Low (exp) 3 Control Reserved (0) Sector Count (exp) Sector Count 4 Reserved (0) Reserved (0) Reserved (0) Reserved (0) Figure 5.4 Register - Host to Device FIS layout The host system uses the Register - Host to Device FIS when information in the Register Block is transferred from the host system to the device. This is the mechanism for issuing the ATA command from the host system to the device. C - To update the Command field, "1" would be set in this field; and to update the Device Control field, "0" would be set in the field. If both C = 1 and SRST = 1 are set, operation is not guaranteed. C141-E293 5-15