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Chapter 2
System Board
Devices on the ISA Bus
Keyboard and Mouse Controller
The computer has an 8042-based keyboard and mouse controller. The connector pin
layouts are shown in the section “Socket Pin Layouts” in the chapter “Interface Boards and
Mass-Storage Drives.”
Audio Controller
HP V
ISUALIZE
Personal Workstations have an audio chip (AD1816) integrated on the
system board. This single chip is a Plug and Play multimedia audio subsystem for
concurrently processing multiple digital streams of 16-bit stereo audio.
Host Interface
The AD1816 audio chip contains all necessary ISA bus logic on chip. This logic includes
address decoding for all onboard resources, control and signal interpretation, DMA
selection and control logic, IRQ selection and control logic, and all interface configuration
logic.
Audio Chip Specifications
The audio chip is driven from the ISA bus, and has the following specifications:
Table 2-11. Audio Chip Specifications
Feature
Description
Digitized Sounds
• 16-bit and 8-bit stereo sampling from 4 kHz to 55.2 kHz
• Programmable sample rates with 1 Hz resolution
• Hardware Full Duplex Conversion
• 16-bit software-based real-time audio
compression/decompression system
Music Synthesizer
• Integrated OPL3 compatible music synthesizer
Mixer
• MPC-3 audio mixer
• Input mixing sources: microphone, LINE In,
CD Audio, AUX Audio, and digitized sounds
• Output mixing of all audio sources to the LINE Out or
integrated PC Workstation speaker
• Multiple source recording and Left/Right channels balance
Line Input
• Input impedance: 17k W (ohms)
• Input range: 0 to 2.83 Vpp
Line Output
• Stereo output of 100 mW per channel with headphone
speakers (impedance 32
Ω)
• Output impedance: 570
Ω
• Output range: 0 to 2.83 Vpp
Содержание X Class 500/550MHz
Страница 6: ...6 Contents ...
Страница 8: ...8 Figures ...
Страница 15: ...15 1 System Overview ...
Страница 66: ...66 Chapter2 System Board Devices on the ISA Bus ...
Страница 96: ...96 Chapter3 Interface Boards and Mass Storage Drivers Connectors and Sockets ...
Страница 134: ...134 Chapter5 Tests and Error Messages Beep Codes ...
Страница 135: ...135 A Regulatory Information and Warranty ...
Страница 146: ...146 AppendixA Regulatory Information and Warranty HP Hardware Warranty ...