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AD1846 Datasheet(PDF) 27 Page - Analog Devices

Part # AD1846
Description  Low Cost Parallel-Port 16-Bit SoundPort Stereo Codec
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD1846 Datasheet(HTML) 27 Page - Analog Devices

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AD1846
REV. A
–27–
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm).
P-68A
68-Lead Plastic Leaded Chip Carrier
0.029 (0.74)
0.027 (0.69)
0.019 (0.48)
0.017 (0.43)
0.175 (4.45)
0.169 (4.29)
0.925 (23.50)
0.895 (22.73)
0.104 (2.64) TYP
0.050
(1.27)
TYP
0.954 (24.23)
0.950 (24.13)
SQ
0.995 (25.27)
0.885 (22.48)
SQ
44
43
26
10
9
60
61
27
TOP VIEW
PIN 1
IDENTIFIER
INDEX
PAGE
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 2
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PINOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AUDIO FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . 9
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog-to-Digital Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9
Digital-to-Analog Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9
Digital Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Digital Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Supplies and Voltage Reference . . . . . . . . . . . . . . . 10
Clocks and Sample Rates . . . . . . . . . . . . . . . . . . . . . . . . . 10
CONTROL REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Control Register Architecture . . . . . . . . . . . . . . . . . . . . . . 11
Direct Control Register Definitions . . . . . . . . . . . . . . . . . 12
Indirect Control Register Definitions . . . . . . . . . . . . . . . . 14
DATA AND CONTROL TRANSFERS . . . . . . . . . . . . . . . 21
Data Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Control and Programmed I/O (PIO) Transfers . . . . . . . . 21
Direct Memory Access (DMA) Transfers . . . . . . . . . . . . . 22
Single-Channel DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DMA Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DMA Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
POWER UP AND RESET . . . . . . . . . . . . . . . . . . . . . . . . . 24
AUTOCALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
CHANGING SAMPLE RATES . . . . . . . . . . . . . . . . . . . . . 24
APPLICATIONS CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . 25
PACKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27



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