User guide

7-14 Copyright 2013 Cirrus Logic, Inc. DS810UM6
Legacy API Still in Use
CS4953x4/CS4970x4 System Designer’s Guide
Table 7-6. Legacy Audio Manager
Index Variable Description
0x0000 GAIN
0x00000000-0x7FFFFFFF (-dB to +24 dB). Overall System Gain. Signed value
with decimal point to the right of bit 27 (5.27 format). Range is zero to (16-2
-27
).
Negative values can be used to invert the phase of all the outputs.
Default*= 0x08000000 (+0 dB)†
0x0001 MUTE
0/1 = Unmute/Mute Audio
Default*= 0x00000000 (unmuted) †
0x0002 CHAN_L_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Left Channel
Default* = 0x80000000†
0x0003 CHAN_C_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Center Channel
Default* = 0x80000000†
0x0004 CHAN_R_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Right Channel
Default* = 0x80000000†
0x0005 CHAN_Ls_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Left Surround Channel
Default* = 0x80000000†
0x0006 CHAN_Rs_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Right Surround Channel
Default* = 0x80000000†
0x0007 CHAN_Sbl_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Left Surround Back Channel
Default* = 0x80000000†
0x0008 CHAN_Sbr_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for Right Surround Back Channel
Default* = 0x80000000†
0x0009 CHAN_LFE0_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for LFE0 Channel
Default* = 0x80000000†
0x000A CHAN_LFE1_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for LFE1 Channel
Default* = 0x80000000†
0x000B CHAN_LFE2_TRIM
0x00000000 – 0x80000000 (0.0 to 1.0)
Volume trim for LFE2 Channel
Default* = 0x80000000†