Cirrus Logic CS49300, Reference Design, Page: 8 / 51

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Table 1. Communication Mode Options
2.3 Assembly Options for Ease of
Manufacture
There are variety of options available on a build of
the CRD42528 that allow for different input and
output options, as well as performance differentia-
tion. This allows the same board to be used in both
low-end and high-end applications. Please note that
systems with lower performance may require exter-
nal analog Bass Management circuitry to comply
with Dolby specifications.
2.3.1 Analog Input Options
The CRD42528 supports 2, 6, or 8 channels of an-
alog input. A list of components that needs to be
populated for each configuration is shown in
Table 2 .
Table 2. Analog Input Assembly Options
2.3.2 Analog Output Options
The CRD42528 supports 2, 6, or 8 channels of an-
alog output. A list of components that needs to be
populated for each configuration is shown in
Table 3 .
Table 3. Analog Output Assembly Options
Mode Populate
Do Not
Populate
SPI R98, R99,
R10, R12,
R16, R143 R13, R14,
R18, R100,
R144,R168,
R166
I
2
C
R13, R14,
R18, R100,
R144,R168,
R166 R98, R99,
R10, R12,
R16, R143
Number of
Analog Input
Channels Populate
Do Not
Populate
2 (L, R) R148, R149,
R150 U18, U33, U2,
Ls, Rs, C, Sub,
SBL and SBR
Input Filters
6 (L, R, Ls, Rs,
C, Sub) R150, U18, U33,
Ls, Rs, C, Sub,
SBL and SBR
Input Filters R148, R149, U2,
SBL and SBR
Input Filters
8 (L, R, Ls, Rs,
C, Sub, SBL/Lz,
SBR/Rz) U18, U33, U2,
Ls, Rs, C, Sub,
SBL and SBR
Input Filters R148, R149,
R150
Number of
Analog Output
Channels Populate
Do Not
Populate
2 (L/Lt, R/Rt) U27 = CS42516
or CS42526,
L/R Output
Filters Ls/Rs, C/Sub,
SBL/SBR Output
Filters
6 (L, R, Ls, Rs,
C, Sub) U27 = CS42516
or CS42526,
L/R, Ls/Rs,
C/Sub Output
Filters SBL/SBR Output
Filters
8 (L, R, Ls, Rs,
C, Sub, SBL/Lz,
SBR/Rz) U27 = CS42518
or CS42528,
L/R, Ls/Rs,
C/Sub,
SBL/SBR
Output Filters