CS48L32 datasheet(49/192 Pages) CIRRUS

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DS1219F4

Cirrus Logic

CS48L32

4.3 Digital Core

The control registers associated with the EQ functions are described in Table 4-12.

Table 4-12. EQ Enable and Gain Control

Bit

Label

Default

Description

R43012 (0xA804)

FX_STATUS

11:0

FX_STS[11:0]

0x00

LHPF, DRC, EQ Enable Status. Indicates the status of each respective

signal-processing function. Each bit is coded as follows:

0 = Disabled

1 = Enabled

[11] = EQ4

[10] = EQ3

[9] = EQ2

[8] = EQ1

[7] = DRC2 (Right)

[6] = DRC2 (Left)

[5] = DRC1 (Right)

[4] = DRC1 (Left)

[3] = LHPF4

[2] = LHPF3

[1] = LHPF2

[0] = LHPF1

R43016 (0xA808)

EQ_CONTROL1

EQ4_EN

EQ4 Enable

0 = Disabled

1 = Enabled

EQ3_EN

EQ3 Enable

0 = Disabled

1 = Enabled

EQ2_EN

EQ2 Enable

0 = Disabled

1 = Enabled

EQ1_EN

EQ1 Enable

0 = Disabled

1 = Enabled

R43020 (0xA80C)

EQ_CONTROL2

EQ4_B1_MODE

EQ4 Band 1 Mode

0 = Shelving filter

1 = Peak filter

EQ3_B1_MODE

EQ3 Band 1 Mode

0 = Shelving filter

1 = Peak filter

EQ2_B1_MODE

EQ2 Band 1 Mode

0 = Shelving filter

1 = Peak filter

EQ1_B1_MODE

EQ1 Band 1 Mode

0 = Shelving filter

1 = Peak filter

R43024 (0xA810)

EQ1_GAIN1

28:24

EQ1_B4_GAIN[4:0]

0x0C

EQ1 Band n Gain (–12 dB to +12 dB in 1 dB steps)

20:16

EQ1_B3_GAIN[4:0]

0x0C

0x00 = –12 dB

0x01 = –11 dB

... (1 dB steps)

0x0C = 0 dB

... (1 dB steps)

0x17 = 11 dB

0x18 = 12 dB

All other codes are

reserved

12:8

EQ1_B2_GAIN[4:0]

0x0C

4:0

EQ1_B1_GAIN[4:0]

0x0C

R43028 (0xA814)

EQ1_GAIN2

4:0

EQ1_B5_GAIN[4:0]

0x0C

R43032 (0xA818)

R43088 (0xA850)

—

EQ1_*

—

EQ1 Frequency Coefficients. Refer to WISCE evaluation board control

software for the derivation of these field values.

R43092 (0xA854)

EQ2_GAIN1

28:24

EQ2_B4_GAIN[4:0]

0x0C

EQ2 Band n Gain (–12 dB to +12 dB in 1 dB steps)

20:16

EQ2_B3_GAIN[4:0]

0x0C

0x00 = –12 dB

0x01 = –11 dB

... (1 dB steps)

0x0C = 0 dB

... (1 dB steps)

0x17 = 11 dB

0x18 = 12 dB

All other codes are

reserved

12:8

EQ2_B2_GAIN[4:0]

0x0C

4:0

EQ2_B1_GAIN[4:0]

0x0C

R43096 (0xA858)

EQ2_GAIN2

4:0

EQ2_B5_GAIN[4:0]

0x0C

R43100 (0xA85C)

R43156 (0xA89C)

—

EQ2_*

—

EQ2 Frequency Coefficients. Refer to WISCE evaluation board control

software for the derivation of these field values.

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