GD82559C Datasheet, PDF (17/60 Pages) Intel Corporation – Intel-Based Electronic Classroom Student Computing Station Based on the Intel® Celeron™ Processor and Intel® 810 Chipset

Intel-Based Electronic Classroom Student Computing Station
5.3
5.4
Table 2.
IDE Connectors
The 82801AA ICH supports Ultra ATA/66 and ATA/33 devices The ATA/66 cable is an
80-conductor cable; however the 40-pin connectors used on motherboards for 40-conductor cables
do not change as a result of this new cable. The wires in the cable alternate: ground, signal, ground,
signal, etc. All the ground wires are tied together at the connectors on the cable (and they are tied to
the ground on the motherboard through the ground pins in the 40-pin connector). This cable
conforms to the Small Form Factor Specification SFF-8049. This specification can be obtained
from the Small Form Factor Committee. To determine if ATA/66 mode can be enabled, the Intel
810 chipset using the ICH requires the system BIOS to attempt to determine the cable type used in
the system.
If only one IDE is implemented with the ICH, the input signals (xDREQ and xIORDY) can be
grounded and the output signals left as no connects. This can be implemented to reduce the board
space and cost.
AC’97 2.1 Compliant Components
The ICH implements an Audio Codec '97 (AC’97) 2.1 compliant digital controller. Any codec
attached to the ICH AC-link should also be AC’97 2.1 compliant. Contact your preferred codec
vendor for information on AC’97 2.1 compliant products. The AC’97 2.1 specification is available
on the Intel web-site:
http://developer.intel.com/pc-supp/platform/ac97/index.htm
The ICH supports the following combinations of codecs:
AC’97 Configuration Combinations
Primary
Secondary
Audio (AC)
Modem (MC)
Audio (AC)
Audio/Modem (AMC)
None
None
Modem (MC)
None
The ICH does not support two codecs of the same type on the link. For example, if an AMC is on
the link, it must be the only codec. If an AC is on the link, another AC cannot be present.
Application Note
17