2 pcm manager in dsp composer – Cirrus Logic AN333 User Manual
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AN333
6.2 PCM Manager in DSP Composer
6.2 PCM Manager in DSP Composer
All configuration information described in
can be controlled in DSP Composer. I/O buffer channel availability
is device specific. The PCM Manager is part of the System block. To insert a System block, drag it onto the workspace.
When the System block is on the workspace, the runtime and pre-kick controls for the PCM Manager can be accessed by
double-clicking the System block. When the System Block is first dragged onto the workspace, the user is prompted to
select device and input mode as seen in
. These settings can also be accessed by right-clicking the System block
and selecting Device Properties.
Figure 6-1. DSP Composer System Block Device Properties
The runtime controls are accessed by double-clicking the System Block as shown in
.
Figure 6-2. DSP Composer PCM Manager Runtime Controls
0x000C
IO_BUFF_CH11_SOURCE
Input source for Aux Channel 11 I/O buffer
Default = 0x00000000
0x000D
Reserved
Reserved
0x000E
PCM_INPUT_MODE
Bit 31: 0/1 Disable/enable LFE processing through PCM input
Bits 3:0 Input Mode
(number of input channels present in the system)
0x0 = 2/0 Lt, Rt Dolby Surround compatible
0x1 = 1/0 C
0x2 = 2/0 L/R
0x3 = 3/0 L/C/R
0x4 = 2/1 L/R/S
0x5 = 3/1 L/C/R/S
0x6 = 2/2 L/R/Ls/Rs
0x7 = 3/2 L/C/R/Ls/Rs
0x8 = 3/3 L/C/R/Ls/Rs/Cs
0x9 = 3/4 L/C/R/Ls/Rs/Sbl/Sbr
0xA = 2/3 L/R/Ls/Rs/Cs
0xB = 2/4 L/R/Ls/Rs/Sbl/Sbr
Default = 0x00000002
Table 6-1. PCM Manager (Cont.)
Index
Variable
Description