Pci Ide Controller; Ac97 Compliant Audio Interface - Sun Microsystems Sun Blade 100 Service Manual

C.2.3.2

PCI IDE Controller

There are two IDE channels within the IDE controller to support up to four devices.
Each channel can operate at DMA mode 4 speed independently. The target devices
are one or two UltraDMA/66 capable hard drives and a DVD-ROM or CD-ROM
drive. The PCI IDE controller:
Supports PCI bus mastering at 132 Mbyte/sec transfer rate
Two separate IDE channels that support ultra 66 high performance ATA bus for
66 Mbytes transfer rate and concurrent operation
Dedicated ATA bus pins and buffers for each channel
C.2.3.3

AC97 Compliant Audio Interface

The system audio consists of a single-chip CODEC, integrated amplifier, and
supporting analog circuitry.
The CODEC is a single-chip stereo, analog-to-digital and digital-to-analog converter
based on delta-sigma conversion technique. The microphone input specifications are
designed for the SunMicrophone II or equivalent. The following figure shows a
functional block diagram of the system audio circuit.
input
(stereo)
Microphone
level
input
(mono)
FIGURE C-2
An internal speaker is connected to the motherboard through the riser card and used
by SW to make "beep" sounds as well as audio sound output.
Line
level
A
B
Audio Circuit Functional Block Diagram
AC 97
LIN_L
Mono
LIN_R _Out
MIN_L
CODEC
MIN_R
Appendix C
Internal
mono
D
speaker
Line
E
level
output
(stereo)
Headphone
F
output
(stereo)
Functional Description C-5