WM5102 datasheet(74/334 Pages) WOLFSON

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WM5102

Production Data

PD, June 2014, Rev 4.2

DRC1LMIX_VOL2

DRC1LMIX_VOL3

DRC1LMIX_VOL4

DRC1LMIX_VOL1

DRC1LMIX_SRC1

DRC1LMIX_SRC3

DRC1LMIX_SRC4

DRC1LMIX_SRC2

DRC1 Left (58h)

DRC

Dynamic Range Controller

DRC1RMIX_VOL2

DRC1RMIX_VOL3

DRC1RMIX_VOL4

DRC1RMIX_VOL1

DRC1RMIX_SRC1

DRC1RMIX_SRC3

DRC1RMIX_SRC4

DRC1RMIX_SRC2

DRC1 Right (59h)

DRC

Dynamic Range Controller

Figure 30 Dynamic Range Control (DRC) Block

The DRC1 mixer control registers (see Figure 30) are located at register addresses R2240 (8C0h)

through to R2255 (08CFh).

The full list of digital mixer control registers is provided in the “Register Map” section (Register R1600

through to R2920). Generic register definitions are provided in Table 7.

The *_SRCn registers select the input source(s) for the respective DRC processing blocks. Note that

the selected input source(s) must be configured for the same sample rate as the DRC to which they

are connected. Sample rate conversion functions are available to support flexible interconnectivity -

see “Asynchronous Sample Rate Converter (ASRC)” and “Isochronous Sample Rate Converter

(ISRC)”.

The bracketed numbers in Figure 30, eg. “(58h)” indicate the corresponding *_SRCn register setting

for selection of that signal as an input to another digital core function.

The sample rate for the DRC function is configured using the FX_RATE register - see Table 21. Note

that the EQ, DRC and LHPF functions must all be configured for the same sample rate.

The DRC function supports audio sample rates in the range 8kHz to 96kHz. Higher sample rates (up

to 192kHz) may be selected using FX_RATE, provided that the DRC function is disabled.

Sample rate conversion is required when routing the DRC signal paths to any signal chain that is

asynchronous and/or configured for a different sample rate.

The DRC functions are enabled using the control registers described in Table 12.

WM5102 Datasheet(PDF) 74 Page - Wolfson Microelectronics plc

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