Datasheet
TAS5548
www.ti.com
SLES270 –NOVEMBER 2012
11.42 PSVC Range Register (0xDF)
Bits D31–D2 are zero.
Table 11-63. PSVC Range Register Format
D31–D2 D1 D0 FUNCTION
0 0 0 12.04-dB control range for PSVC
0 0 1 18.06-dB control range for PSVC
0 1 0 24.08-dB control range for PSVC
0 1 1 Ignore – retain last value
11.43 General Control Register (0xE0)
Bits D31–D4 are zero. Bit D0 is reserved.
Table 11-64. General Control Register Format
D31–D4 D3 D2 D1 D0 FUNCTION
– – 0 – Normal
– – 1 - Lineout/6 Channel mode (6Channels will be pwm processed)
0 0 – – Power Supply Volume Control Disable
0 1 – – Power Supply Volume Control Enable
0 0 – – – Subwoofer Part of PSVC
0 1 – – – Subwoofer Separate from PSVC
11.44 96kHz Dolby Downmix Coefficients (0xE3 to 0xE8)
Each gain coefficient is in 28-bit (5.23) format, so 0x80 0000 is a gain of 1. Each gain coefficient is written
as a 32-bit word with the upper four bits not used. For eight gain coefficients, the total is 32 bytes.
Table 11-65. 96kHz Dolby Downmix Coefficients
I
2
C TOTAL REGISTER DEFAULT
DESCRIPTION OF CONTENTS
SUBADDRESS BYTES Fields STATE
0xE3 4 dolby_COEF1L_ 96kHz SDIN1-left to SDOUT-left down-mix coefficient (default = 00 29 03 33
96k 1/3.121) . This is also the coefficient for SDIN1-right to SDOUT-right.
0xE4 4 dolby_COEF1R 96kHz SDIN4-left to SDOUT-left down-mix coefficient. This is also the 00 1C FE EF
_96k coefficient for SDIN4-left to SDOUT-right.
0xE5 4 TBD 96kHz SDIN2-left to SDOUT-right down-mix coefficient. FF E3 01 11
0xE6 4 TBD 96kHz SDIN2-right to SDOUT-right down-mix coefficient. FF E3 01 11
0xE7 4 TBD 96kHz SDIN2-left to SDOUT-left down-mix coefficient. FF E3 01 11
0xE8 4 TBD 96kHz SDIN2-right to SDOUT-left down-mix coefficient. FF E3 01 11
11.45 THD Manager Configuration (0xE9 & 0xEA)
0xE9 (4B) THD Manager (pre) - provide boost if desired to clip
0xEA (4B) THD Manager (post) - cut clipping signal to final level
Both registers have a 5.23 register format (28bit coefficient)
Valid register values 0000 0000 to 0FFF FFFF
Writes to upper byte is ignored
0dB default value 0080 0000
max positive value 07 FF FFFF = +24dB
Copyright © 2012, Texas Instruments Incorporated Serial-Control Interface Register Definitions 111
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