CS47L35 datasheet(47/300 Pages) CIRRUS

47 / 300 page

DS1085F3

CS47L35

4.3 Digital Core

Figure 4-15. Digital-Core SLIMbus Outputs

4.3.4

Five-Band Parametric Equalizer (EQ)

The digital core provides four EQ processing blocks as shown in Fig. 4-16. A four-input mixer is associated with each EQ.

The four input sources are selectable in each case, and independent volume control is provided for each path. Each EQ

block supports one output.

The EQ provides selective control of five frequency bands as follows:

• The low-frequency band (Band 1) filter can be configured as a peak filter or as a shelving filter. If configured as a

shelving filter, it provides adjustable gain below the Band 1 cut-off frequency. As a peak filter, it provides adjustable

gain within a defined frequency band that is centered on the Band 1 frequency.

• The midfrequency bands (Band 2–Band 4) filters are peak filters that provide adjustable gain around the respective

center frequency.

• The high-frequency band (Band 5) filter is a shelving filter that provides adjustable gain above the Band 5 cut-off

frequency.

Figure 4-16. Digital-Core EQ Blocks

The EQ1–EQ4 mixer control fields (see Fig. 4-16) are located at register addresses R2176–R2207 (0x0880–0x089F).

The full list of digital-mixer control registers (R1600–R2936) is provided in Section 6. Generic register field definitions are

provided in Table 4-7.

The x_SRCn fields select the input sources for the respective EQ processing blocks. Note that the selected input sources

must be configured for the same sample rate as the EQ to which they are connected. Sample-rate conversion functions

are available to support flexible interconnectivity; see Section 4.3.14.

SLIMTXnMIX_SRC1

SLIMTXnMIX_SRC3

SLIMTXnMIX_SRC4

SLIMTXnMIX_SRC2

SLIMbus TXn

SLIMTXnMIX_VOL2

SLIMTXnMIX_VOL3

SLIMTXnMIX_VOL4

SLIMTXnMIX_VOL1

…

CS47L35 supports six SLIMbus output mixers, i.e., n = 1–6

EQnMIX_VOL2

EQnMIX_VOL3

EQnMIX_VOL4

EQnMIX_VOL1

EQnMIX_SRC1

EQnMIX_SRC3

EQnMIX_SRC4

EQnMIX_SRC2

EQ1 (0x50)

EQ2 (0x51)

EQ3 (0x52)

EQ4 (0x53)

Five-band equalizer

…

CS47L35 supports four EQ blocks, i.e., n = 1–4

CS47L35 датащи(PDF) 47 Page - Cirrus Logic

CS47L35 датащи(HTML) 47 Page - Cirrus Logic

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL