User Guide CC9-SAMBA •
CompactPCI®
Pentium M CPU Board
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Enhanced IDE Interface
The EIDE interface handles the exchange of information between the processor and peripheral devices
like hard disks, ATA CompactFlash cards and CD-ROM drives. The interface supports:
C
Up to four ATA devices (including one CompactFlash slot)
C
PIO Mode 3/4, Ultra ATA/33, Ultra ATA/66, Ultra ATA/100
C
Support for LS-120 drives
The primary IDE interface is routed to the
CompactPCI
J2 connector. The rear I/O adapter CCR-RIO
allows the connection of a master and a slave IDE device via a standard 40-pin flat ribbon cable (use
special 80-pin cabling assembly for Ultra ATA/66 or /100 operation).
The presence of an 80-pin cable at the primary IDE interface could be checked out by reading the
state of the GPI8 of the I/O Controller Hub (ICH4). A logical 1 signals a 40-pin, a logical 0 a 80-pin
cable. See the ATA/ATAPI-6 specification (section 6.7 “Host determination of cable type by detecting
CBLID-“) for details.
The secondary IDE interface is routed to the on-board connectors PIDET and PIDEB (T:top side,
B:bottom side of the board). PIDE is used to interface to the CompactFlash Card adapter C10-CFA or
to the expansion board CCA-LAMBADA. Use the C10-CFA adapter to attach a CompactFlash ATA style
silicon disk, whenever a hard disk is not suitable for your system, or as an additional mass storage
device. The CCA-LAMBADA expansion board is capable to carry an on-board 1.8" or 2.5" hard disk
drive. When using the 1.8" option the concurrent operation of a CompactFlash device is possible.
A display LED, situated in the front panel near the reset push-button, signals disk activity status of the
primary and also the secondary IDE devices.
The IDE controller is integrated into the ICH4. Ultra ATA IDE drivers can be downloaded from the Intel
website.
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