Cirrus Logic CS4970x4 - Manual (Page 162)

C-9 Copyright 2013 Cirrus Logic, Inc. DS810UM6
Revision History
CS4953x4/CS4970x4 System Designer’s Guide
When writing to the serial flash, the first location should have the number of words, calculated based on
the number of bands, number of channels, etc
Example:
0x74000: 00000002
: d5000025
: 00200020
This example saves one coefficient.
5. Return to normal operation after writing the coefficients by performing a master boot.
6. The EQ coefficients may be invoked using these commands:
ucmd ef00000000000100
ucmd efxxxxxxxxxxx #(any other module-decoder, mpm)
ucmd ef00000a0000001c #(app)
ucmd ef00000c0000000* #(PPM mode as described in the example above Step
# 5)
ucmd ef00000000000001
Revision History
Revision Date Changes
UM1 - Unpublished on the Web
UM2_beta July, 2009
Added CS4953x4 product to tile and to the descriptions in the various chapters in this
manual.
Added following footnote on Page 7-11 and a Note in section 8.4.22:
"Current firmware does not support change of input source from HDMI/Multichannel
source to SPDIF source using DSP Manager API commands. Cirrus recommends
using
SPDIF as the default input source in the flash_image.xml file and the DSP Reset
should be toggled to switch to SPDIF source from HDMI/Multichannel source."
Added 2nd typical connection diagram in
Figure 1-3
Added description for 0x0003DSP_CFG_INPUT_CHANNELS to Table 7-4 .
UM2_beta2 August, 2009
Added Section 8.7.2.1. Deleted former Chapter 9 describing the use of DSP
Controller on the CS4953x4/CS4970x4 platform. DSP Controller is no longer a
supported application.
UM2_beta3 September, 2009
Updated Section 1.2, “Operational Mode Selection” on page 1-2 . Updated Section
7.3.2, “Writing to the DSP” on page 7-2 , changing, changing Write Data Word: bit
table to Data [31:0].
UM3 February, 2009
Changed chapter number for Chapter 7 in the previous revision to Chapter 8.
Changed chapter number for Chapter 8 in the previous revision to Chapter 7. Updated
Table 4-2 . Moved note, "DA02_LRCLK & DA02_SCLK are driven by DA01_LRCLK &
DA01_SCLK" from the A1 parameter in Table 4-2 cell to the B0 parameter in Table 4-
3 . Updated Table 4-5 . Added Table 4-8 . Added note to Section 4.2.3. Updated Section
C.1.13.1.
UM4 November, 2011 Updated Table 4-10 to match values seen in Hardware User’s Manual.
UM5 February, 2012 Added Chapter 9 . Added Section 8.7.2.2. , Section 8.7.2.3. , and Section 8.7.2.4.
UM6 March, 2013 Updated description of Bits [15:0] in Table 7-1 .