TAS5508C datasheet(92/107 Pages) TI

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TAS5508C

SLES257 – SEPTEMBER 2010

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7.29 Volume, Treble, and Bass Slew Rates Register (0xD0)

Table 7-33. Volume Gain Update Rate (Slew Rate)

D31–D10

FUNCTION

512-step update at 4 Fs, 42.6 ms at 48 kHz

1024-step update at 4 Fs, 85.3 ms at 48 kHz

2048-step update at 4 Fs, 170 ms at 48 kHz

Table 7-34. Treble and Bass Gain Step Size (Slew Rate)

FUNCTION

No operation

Minimum rate – Updates every 0.083 ms (every LRCLK at 48 kHz)

Updates every 0.67 ms (32 LRCLKs at 48 kHz)

Default rate - Updates every 1.31 ms (63 LRCLKs at 48 kHz). This is the

maximum constant time that can be set for all sample rates.

Maximum rate – Updates every 5.08 ms (every 255 LRCLKs at 48 kHz)

7.30 Volume Registers (0xD1–0xD9)

Channels 1, 2, 3, 4, 5, 6, 7, and 8 are mapped into registers 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7,

and 0xD8, respectively. The default volume for all channels is 0 dB.

Master volume is mapped into register 0xD9. The default for the master volume is mute.

Bits D31–D12 are Don't Care.

Table 7-35. Volume Register Format

D31

D30

D29

D28

D27

D26

D25

D24

FUNCTION

Unused bits

D23

D22

D21

D20

D19

D18

D17

D16

FUNCTION

Unused bits

D15

D14

D13

D12

D11

D10

FUNCTION

V11

V10

Volume

FUNCTION

Volume

Serial-Control Interface Register Definitions

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