AD1848K Analog Devices, AD1848K Datasheet - Page 28

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AD1848K

Manufacturer Part Number
AD1848K
Description
Parallel-Port 16-Bit SoundPort Stereo Codec
Manufacturer
Analog Devices
Datasheet

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AD1848K
10
26
27
9
68-Lead Plastic Leaded Chip Carrier
0.954 (24.23)
0.950 (24.13)
0.995 (25.27)
0.885 (22.48)
IDENTIFIER
TOP VIEW
PIN 1
SQ
SQ
P-68A
61
43
60
44
INDEX
PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 2
ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PINOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
AUDIO FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . 9
CONTROL REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DATA AND CONTROL TRANSFERS . . . . . . . . . . . . . . . 21
POWER UP AND RESET . . . . . . . . . . . . . . . . . . . . . . . . . 24
AUTOCALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
CHANGING SAMPLE RATES . . . . . . . . . . . . . . . . . . . . . 24
APPLICATIONS CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . 25
FREQUENCY RESPONSE PLOTS . . . . . . . . . . . . . . . . . 27
PACKAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Analog-to-Digital Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9
Digital-to-Analog Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9
Digital Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Digital Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Supplies and Voltage Reference . . . . . . . . . . . . . . . 10
Clocks and Sample Rates . . . . . . . . . . . . . . . . . . . . . . . . . 10
Control Register Architecture . . . . . . . . . . . . . . . . . . . . . . 11
Direct Control Register Definitions . . . . . . . . . . . . . . . . . 12
Indirect Control Register Definitions . . . . . . . . . . . . . . . . 14
Data Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Control and Programmed I/O (PIO) Transfers . . . . . . . . 21
Direct Memory Access (DMA) Transfers . . . . . . . . . . . . . 22
Single-Channel DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DMA Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DMA Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
0.175 (4.45)
0.169 (4.29)
0.104 (2.64) TYP
0.029 (0.74)
0.027 (0.69)
0.050
(1.27)
TYP
0.019 (0.48)
0.017 (0.43)
Dimensions shown in inches and (mm).
0.925 (23.50)
0.895 (22.73)
OUTLINE DIMENSIONS
–28–
COPLANARITY
0.055
(0.60
0.004 (0.102)
(1.40
SEATING
0.024
PLANE
0.006
0.15)
LEAD
0.002
0.05)
MAX
0.007 (0.17) MAX
0.063 (1.60) MAX
64-Lead Thin Quad Flatpack
0 – 7
12
TYP
6
PAGE
4
16
1
64
17
ST-64
0.031 (0.80)
0.630
(16.00
0.551
(14.00
TOP VIEW
0.009
0.004
0.25)
0.10)
0.014 (0.35)
SQ
SQ
REV. 0
49
32
48
33

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