Datasheet

TAS5548
SLES270 –NOVEMBER 2012 www.ti.com
11.20 Input Mixer Registers, Channels 1–8 (0x41–0x48)
Input mixers 1, 2, 3, 4, 5, 6, 7, and 8 are mapped into registers 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
and 0x48, respectively.
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 reserved. For eight gain coefficients, the total is 32 bytes.
There is no negative value available. The mixer cannot phase invert.
Bold indicates the one channel that is passed through the mixer.
Table 11-23. Channel 1–8 Input Mixer Register Format
I
2
C TOTAL REGISTER
DESCRIPTION OF CONTENTS DEFAULT STATE
SUBADDRESS BYTES FIELDS
A_to_ipmix[1] SDIN1-left (Ch1) A to input mixer 1 coefficient (default = 1) 0080 0000
B_to_ipmix[1] SDIN1-right (Ch2) B to input mixer 1 coefficient (default = 0) 0000 0000
C_to_ipmix[1] SDIN2-left (Ch3) C to input mixer 1 coefficient (default = 0) 0000 0000
D_to_ipmix[1] SDIN2-right (Ch4) D to input mixer 1 coefficient (default = 0) 0000 0000
0x41 32
E_to_ipmix[1] SDIN3-left (Ch5) E to input mixer 1 coefficient (default = 0) 0000 0000
F_to_ipmix[1] SDIN3-right (Ch6) F to input mixer 1 coefficient (default = 0) 0000 0000
G_to_ipmix[1] SDIN4-left (Ch7) G to input mixer 1 coefficient (default = 0) 0000 0000
H_to_ipmix[1] SDIN4-right (Ch8) H to input mixer 1 coefficient (default = 0) 0000 0000
A_to_ipmix[2] SDIN1-left (Ch1) A to input mixer 2 coefficient (default = 0) 0000 0000
B_to_ipmix[2] SDIN1-right (Ch2) B to input mixer 2 coefficient (default = 1) 0080 0000
C_to_ipmix[2] SDIN2-left (Ch3) C to input mixer 2 coefficient (default = 0) 0000 0000
D_to_ipmix[2] SDIN2-right (Ch4) D to input mixer 2 coefficient (default = 0) 0000 0000
0x42 32
E_to_ipmix[2] SDIN3-left (Ch5) E to input mixer 2 coefficient (default = 0) 0000 0000
F_to_ipmix[2] SDIN3-right (Ch6) F to input mixer 2 coefficient (default = 0) 0000 0000
G_to_ipmix[2] SDIN4-left (Ch7) G to input mixer 2 coefficient (default = 0) 0000 0000
H_to_ipmix[2] SDIN4-right (Ch8) H to input mixer 2 coefficient (default = 0) 0000 0000
A_to_ipmix[3] SDIN1-left (Ch1) A to input mixer 3 coefficient (default = 0) 0000 0000
B_to_ipmix[3] SDIN1-right (Ch2) B to input mixer 3 coefficient (default = 0) 0000 0000
C_to_ipmix[3] SDIN2-left (Ch3) C to input mixer 3 coefficient (default = 1) 0080 0000
D_to_ipmix[3] SDIN2-right (Ch4) D to input mixer 3 coefficient (default = 0) 0000 0000
0x43 32
E_to_ipmix[3] SDIN3-left (Ch5) E to input mixer 3 coefficient (default = 0) 0000 0000
F_to_ipmix[3] SDIN3-right (Ch6) F to input mixer 3 coefficient (default = 0) 0000 0000
G_to_ipmix[3] SDIN4-left (Ch7) G to input mixer 3 coefficient (default = 0) 0000 0000
H_to_ipmix[3] SDIN4-right (Ch8) H to input mixer 3 coefficient (default = 0) 0000 0000
A_to_ipmix[4] SDIN1-left (Ch1) A to input mixer 4 coefficient (default = 0) 0000 0000
B_to_ipmix[4] SDIN1-right (Ch2) B to input mixer 4 coefficient (default = 0) 0000 0000
C_to_ipmix[4] SDIN2-left (Ch3) C to input mixer 4 coefficient (default = 0) 0000 0000
D_to_ipmix[4] SDIN2-right (Ch4) D to input mixer 4 coefficient (default = 1) 0080 0000
0x44 32
E_to_ipmix[4] SDIN3-left (Ch5) E to input mixer 4 coefficient (default = 0) 0000 0000
F_to_ipmix[4] SDIN3-right (Ch6) F to input mixer 4 coefficient (default = 0) 0000 0000
G_to_ipmix[4] SDIN4-left (Ch7) G to input mixer 4 coefficient (default = 0) 0000 0000
H_to_ipmix[4] SDIN4-right (Ch8) H to input mixer 4 coefficient (default = 0) 0000 0000
88 Serial-Control Interface Register Definitions Copyright © 2012, Texas Instruments Incorporated
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