HB288256C5 Datasheet, PDF (47/67 Pages) Hitachi Semiconductor – CompactFlash™

HB288256/192/160/128/096/064/032C5
Sector Transfer Protocol
1. Sector read: 1 sector read procedure after the card configured I/O interface is shown as follows.
Start
Set the cylinder low / high register
I/O Access, INDEX=1
Set the head No. of drive head register
Set the sector number register
Set "01H" in sector count register
(1)Set the logical sector number
Set "20H" in Command register
(2)
Read the status register
N
"58H"?
Y
Read 256 times the data register
(512 bytes)
(3)
(4)Burst data transfer
Read the status register
N
(5)
"50H"?
Y
Wait the command input
47