CS4231A Datasheet, PDF (53/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CS4231A
VD1, VD2 - Digital Supply Voltage, Pin 1, 7 (L), Pin 88, 98 (Q).
Digital supply for the parallel data bus section of the codec.
VD3, VD4 - Digital Supply Voltage, Pin 15, 19 (L), Pin 10, 14 (Q).
Digital supply for the internal digital section of the codec (except for the parallel data bus).
DGND1, DGND2 - Digital Ground, Pin 2, 8 (L), Pin 89, 99 (Q).
Digital ground reference for the parallel data bus section of the codec. These pins are isolated
from the other digital grounds and should be connected to the digital ground section of the
board (see Figure 17).
DGND3, DGND4, DGND7, DGND8 - Digital Ground, Pin 16, 20, 53, 64(L), Pin 11, 15, 69, 79 (Q).
Digital ground reference for the internal digital section of the codec (except the parallel data
bus). These pins are connected to the substrate of the die as are the AGND pins. Optimum
layout is achieved by placing DGND3/4/7/8 on the analog ground plane with the AGND pins as
shown in Figure 17. However, other ground arrangements should yield adequate results.
*NC (V_DD) - No Connect, Pins 24, 45, 54 (L)
These pins are no connects for the CS4231A. When compatibility with the AD1848 is desired,
these pins should be connected to the digital power supply. For other compatibility issues, see
the Compatibility with AD1848 section of the data sheet.
*NC (GNDD) - No Connect, Pins 25, 44 (L)
These pins are no connects for the CS4231A. When compatibility with the AD1848 is desired,
these pins should be connected to digital ground. For other compatibility issues, see the
Compatibility with AD1848 section of the data sheet.
DS139PP2
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