Input/Output Interfaces

5.7.1 HD Audio Controller

The HD Audio Controller is a PCI Express device that is integrated into the 82801 ICH component and supports the following functions:

■Read/write access to audio codec registers

■Support for greater than 48-KHz sampling

■HD audio interface

5.7.2HD Audio Link Bus

The HD audio controller and the HD audio codec communicate over a five-signal HD Audio Link Bus (Figure 5-9). The HD Audio Interface includes two serial data lines; serial data out (SDO, from the controller) and serial data in (SDI, from the audio codec) that transfer control and PCM audio data serially to and from the audio codec using a time-division multiplexed (TDM) protocol. The data lines are qualified by the 24-MHz BCLK signal driven by the audio controller. Data is transferred in frames synchronized by the 48-KHz SYNC signal, which is derived from the clock signal and driven by the audio controller. When asserted (typically during a power cycle), the RESET- signal (not shown) will reset all audio registers to their default values.

BCLK

Frame

Start

SYNC

Tag A

Frame

Tag B

Frame

Start

SDO

 

 

Command Stream

 

 

 

Stream A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SDI

 

 

 

 

 

Response Stream

 

 

 

 

 

 

Tag C

 

 

 

 

 

RST#

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stream B

Stream C

NOTE: Clock not drawn to scale.

Figure 5-9. HD Audio Link Bus Protocol

5.7.3 Audio Multistreaming

The audio subsystem can be configured (through the ADI control panel) for processing audio for multiple applications (multi-tasking). The Headphone Out jack can provide audio for one application while the Line Out jack can provide external speaker audio from another application.

 

5-12

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Technical Reference Guide

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Image 62
HP 8100 manual HD Audio Controller, HD Audio Link Bus, Audio Multistreaming
Page 61 Page 63

8100 specifications

The HP 8100 series is a line of powerful and versatile printers designed to meet the demanding needs of businesses and offices. Known for its durability and efficiency, the HP 8100 is particularly popular among professionals seeking high-quality prints with fast turnaround times.

One of the standout features of the HP 8100 is its capability to deliver impressive print speeds. With a print speed of up to 60 pages per minute, this printer significantly reduces wait times, allowing businesses to increase productivity. Furthermore, the first page out time is remarkably fast, making it ideal for busy office environments requiring quick document retrieval.

The HP 8100 utilizes HP's advanced LaserJet technology, which ensures sharp and consistent print quality across a range of media types. The printer is capable of producing professional-grade documents with a resolution of up to 1200 x 1200 dpi, making text crisp and images vibrant. This high-quality output is essential for creating marketing materials, reports, and other important documentation.

Another significant characteristic of the HP 8100 is its expandable paper handling capabilities. The printer comes with a standard input tray that accommodates a substantial volume of paper, while optional trays can be added to further increase capacity. This flexibility is particularly beneficial for businesses managing high-volume printing tasks.

The HP 8100 is equipped with a variety of connectivity options, including USB, Ethernet, and wireless capabilities. This versatility allows for easy integration with existing office networks, enabling multiple users to access the printer simultaneously. Additionally, mobile printing features support printing from smartphones and tablets, enhancing convenience for on-the-go professionals.

Energy efficiency is another major advantage of the HP 8100 series. Designed to consume less energy, this printer adheres to energy-saving standards, which can help reduce operational costs for businesses. The printer’s efficiency is complemented by its reliable performance, often with minimal maintenance requirements, ensuring that it remains a staple in the office for years to come.

In the realm of security, HP provides several features to protect sensitive information. Secure printing options and user authentication help safeguard documents, which is crucial for maintaining confidentiality in corporate environments.

Overall, the HP 8100 series stands out for its exceptional print speed, high-quality output, robust connectivity options, and energy efficiency. These characteristics make it an excellent choice for businesses looking to enhance their printing capabilities.
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