Hitachi IC25N040ATMR04-0 - Travelstar 40GB Laptop Hard Drive 9.5mm 2.5 Inch Notebook HDD Specifications page 139

LBA Low
LBA High/Low
H
The device internally uses 40 bytes of ECC data on all data written or read from the disk. The 4-byte mode of oper-
ation is provided by means of an emulation. Use of the 40 byte ECC mode is recommended for testing the effec-
tiveness and integrity of the ECC functions of the device.
This indicates the sector number of the transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 0–7. (L = 1)
This indicates the cylinder number of the transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 8–15 (Low), 16–23 (High). (L = 1)
This indicates the head number of the transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 24–27. (L = 1)
Travelstar 80GN Hard Disk Drive Specification
129