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AD1812 Datasheet(PDF) 1 Page - Analog Devices |
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AD1812 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page a SoundPort Controller AD1812 FEATURES Compatibility with: Sound Blaster Pro* AdLib* Windows* Sound System 16-Bit Stereo Codec MPC Level-2+ Mixer Dual DMA/Full Duplex Operation On-Chip FIFO Buffers Sample Rates from 5.5 kHz to 50 kHz ADPCM Compression/Decompression Plug and Play Compliant Compatible MIDI MPU-401 Port Integrated Game Port Free Supporting Software: Windows 3.1 Driver Windows 95 Driver Control Applets Diagnostics Power Management Modes Operation from +5 V Supply 16-Bit Parallel Interface to ISA Bus 24 mA Bus Drive Capability *Sound Blaster Pro is a trademark of Creative Labs, Ltd. *AdLib is a trademark of AdLib Multimedia. *Windows is a trademark and Microsoft is a registered trademark of *Microsoft Corp. SoundPort is a registered trademark of Analog Devices, Inc. PRODUCT OVERVIEW The AD1812 SoundPort® Controller is a single chip audio sub- system for adding 16-bit stereo audio to personal computers. The AD1812 is compatible with Sound Blaster Pro, AdLib, and the Microsoft* Windows Sound System. The AD1812 provides an integrated audio solution for enhanced business audio, enter- tainment sound effects, and multimedia applications. The AD1812 audio subsystem combines an integrated digital audio controller, a powerful signal processor, a mixer, and a 16-bit Σ∆ stereo codec. The DOS games register set, the Win- dows Sound System register set, music synthesis hardware, an MPU-401 compatible UART interface, a game port (with timer), and a Plug and Play ISA interface are all contained on chip. The on-chip Plug and Play (PnP) routine provides con- figuration services for the internal logical devices and an exter- nal modem chipset. The AD1812 can record compress and playback voice, sound and music. The system provides all PC 95 audio conversion and compatibility requirements for a multimedia enabled PC. (continued on Page 12) FUNCTIONAL BLOCK DIAGRAM 0dB/ 20dB G M G M G M M Σ G G M M Σ Σ Σ Σ Σ Σ Σ ∆ D/A CONVERTER ATTN/ MUTE Σ ∆ A/D CONVERTER PGA DIGITAL MIX ATTENUATE Σ Σ FORMAT FIFO FORMAT FIFO GAME REGISTER SET & WSS REGISTER SET MIDI _IN MPU-401 UART JOYSTICK/GAME PORT INTERFACE MIDI _OUT A_1 B_1 A_X B_X A_2 B_2 A_Y B_Y XTALI/O PARALLEL BUS INTERFACE CONTROL REGISTERS PLUG AND PLAY REGISTERS ATTN Σ ∆ D/A CONVERTER ADSP-2171 ROM RAM MIC LINE AUX1 L_OUT MONO I/O R_OUT MONO_IN AUX2 DACIN DACOUT DRQ (0, 1, 3, 5, 6, 7) IRQ (3, 4, 5, 7, 9, 10, 11, 12) PC_D (15:0) PC_A (15:0) AEN DACK (0, 1, 3, 5, 6, 7) IOR IOW SBHE IO_CH16 PWRDWN PnP AD1812 MODEM_IRQ MODEM_SEL G = GAIN/AMPLIFIER BLOCK M = MUTE BLOCK OSCILLATORS REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. © Analog Devices, Inc., 1996 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 |
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