IBM DJSA-205, Specifications, Page: 199 / 211

13.39 Write Sectors (30h/31h)
see below Status 0 0 1 1 0 0 0 R Command
- - - - H H H H Device/Head 1 L 1 D H H H H Device/Head
V V V V V V V V Cylinder High V V V V V V V V Cylinder High
V V V V V V V V Cylinder Low V V V V V V V V Cylinder Low
V V V V V V V V Sector Number V V V V V V V V Sector Number
V V V V V V V V Sector Count V V V V V V V V Sector Count
see below Error
- - - - - - - -
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0 Register 7 6 5 4 3 2 1 0 Register
Command Block Input Registers Command Block Output Registers
V – 0 – V V V 0 0 0 V 0 V 0 0 0
ERR IDX COR DRQ DSC DF RDY BSY AMN T0N ABT 0 IDN 0 UNC CRC
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
Status Register Error Register
Figure 128. Write Sectors command (30h/31h)
The Write Sectors command transfers one or more sectors from the host to the device. The data is then
written to the disk media.
The sectors are transferred through the Data Register 16 bits at a time.
If an uncorrectable error occurs, the write will be terminated at the failing sector, when the auto reassign
function is disable.
Output Parameters To The Device
Sector Count This indicates the number of continuous sectors to be transferred. If the Sector
Count of zero is specified, then 256 sectors will be transferred.
Sector NumberThis indicates the sector number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 0–7. (L = 1)
Cylinder High/Low This indicates the cylinder number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 8–15 (Low) and bits
16–23 (High). (L = 1)
H This indicates the head number of the first sector to be transferred. (L = 0)
In LBA mode this register contains the LBA bits 24–27. (L = 1)
Travelstar 32GH/30GT/20GN hard disk drive specifications
185