Datasheet

TAS5508C
SLES257–SEPTEMBER 2010 www.ti.com
7.29 Volume, Treble, and Bass Slew Rates Register (0xD0)
Table 7-33. Volume Gain Update Rate (Slew Rate)
D31–D10 D9 D8 FUNCTION
0 0 0 512-step update at 4 Fs, 42.6 ms at 48 kHz
0 0 1 1024-step update at 4 Fs, 85.3 ms at 48 kHz
0 1 0 2048-step update at 4 Fs, 170 ms at 48 kHz
0 1 1 2048-step update at 4 Fs, 170 ms at 48 kHz
Table 7-34. Treble and Bass Gain Step Size (Slew Rate)
D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
0 0 0 0 0 0 0 0 No operation
0 0 0 0 0 0 1 1
0 0 0 0 0 1 0 0 Minimum rate – Updates every 0.083 ms (every LRCLK at 48 kHz)
0 0 1 0 0 0 0 0 Updates every 0.67 ms (32 LRCLKs at 48 kHz)
0 0 1 1 1 1 1 1 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.
1 1 1 1 1 1 1 1 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 D9 D8 FUNCTION
V11 V10 V9 V8 Volume
D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
V7 V6 V5 V4 V3 V2 V1 V0 Volume
92 Serial-Control Interface Register Definitions Copyright © 2010, Texas Instruments Incorporated
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