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AD1816AJST датащи(PDF) 2 Page - Analog Devices

номер детали AD1816AJST
подробное описание детали  SoundPort Controller
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AD1816A
–2–
REV. A
PRODUCT OVERVIEW
The AD1816A SoundPort Controller is a single chip Plug and
Play multimedia audio subsystem for concurrently processing
multiple digital streams of 16-bit stereo audio in personal com-
puters. The AD1816A maintains full legacy compatibility with
applications written for SoundBlaster Pro and AdLib, while ser-
vicing Microsoft PC 97 application requirements. The AD1816A
includes an internal OPL3 compatible music synthesizer, Phat
Stereo circuitry for phase expanding the analog stereo output,
an MPU-401 UART, joystick interface with a built-in timer, a
DSP serial port and two I
2S serial ports. The AD1816A on-chip
Plug and Play routine provides configuration services for all in-
tegrated logical devices. Using an external E
2PROM allows the
AD1816A to decode up to two additional external user-defined
logical devices such as modem and CD-ROM.
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PIN CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . 11
HOST INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SERIAL INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
ISA INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
AD1816A Chip Registers . . . . . . . . . . . . . . . . . . . . . . . . . 21
AD1816A Plug and Play Device Configuration Registers . . 22
Sound System Direct Registers . . . . . . . . . . . . . . . . . . . . . 23
Sound System Indirect Registers . . . . . . . . . . . . . . . . . . . 29
SB Pro; AdLib Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 38
MPU-401 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Game Port Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
APPENDIX A.
PLUG AND PLAY INTERNAL ROM . . . . . . . . . . . . . . 40
PLUG AND PLAY KEY AND “ALTERNATE KEY”
SEQUENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
AD1816 AND AD1816A COMPATIBILITY . . . . . . . . . 42
USING AN EEPROM WITH THE AD1816 OR
AD1816A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
AD1816 FLAG BYTE . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
USING THE AD1816 WITHOUT AN EEPROM . . . . . 42
AD1816A FLAG BYTES . . . . . . . . . . . . . . . . . . . . . . . . 43
USING THE AD1816A WITHOUT AN EEPROM . . . . 44
MAPPING THE AD1816 EEPROM INTO THE
AD1816A EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . 45
PIN MUXING IN THE AD1816 AND AD1816A . . . . . 45
PROGRAMMING EXTERNAL EEPROMS . . . . . . . . . 47
REFERENCE DESIGNS AND DEVICE DRIVERS . . . 47
OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . 50
TABLE OF CONTENTS
Figures
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 1. PIO Read Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 2. PIO Write Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. DMA Read Cycle . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. DMA Write Cycle . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Codec Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6. DSP Port Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7. I2S Serial Port Timing . . . . . . . . . . . . . . . . . . . . . . 7
Figure 8. Reset Pulse Width . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 9. Serial Interface Right-Justified Mode . . . . . . . . . . 17
Figure 10. Serial Interface I2S-Justified Mode . . . . . . . . . . . 17
Figure 11. Serial Interface Left-Justified Mode . . . . . . . . . . 17
Figure 12. DSP Serial Interface (Default Frame Rate) . . . . 20
Figure 13. DSP Serial Interface (User Programmed
Frame Rate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 14. DSP Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 15. Codec Transfers . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 16. Recommended Application Circuit . . . . . . . . . . 48
Figure 17. AD1816A Frequency Response Plots . . . . . . . . . 49
Tables
Table I. DSP Port Time Slot Map . . . . . . . . . . . . . . . . . . . 18
Table II. Chip Register Diagram . . . . . . . . . . . . . . . . . . . . . 21
Table III. Logical Devices and Compatible Plug and
Play Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table IV. Internal Logical Device Configuration . . . . . . . . 23
Table V. Sound System Direct Registers . . . . . . . . . . . . . . . 23
Table VI. Codec Transfers . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table VII. Indirect Register Map and Reset/Default States . 30
Table VIII. Sound System Indirect Registers . . . . . . . . . . . 31
Table IX. SoundBlaster Pro ISA Bus Registers . . . . . . . . . . 38
Table X. AdLib ISA Bus Registers . . . . . . . . . . . . . . . . . . . 39
Table XI. MIDI ISA Bus Registers . . . . . . . . . . . . . . . . . . . 39
Table XII. Game Port ISA Bus Registers . . . . . . . . . . . . . . 39
Table XIII. AD1816 Pin Muxing . . . . . . . . . . . . . . . . . . . . 45
Table XIV. AD1816A Pin Muxing . . . . . . . . . . . . . . . . . . . 46


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