Datasheet

DIN
(1)
6 BQ
(2)
6 BQ
Lch
Rch
(3)
2 BQ
(5)
2 BQ
(7)
2 BQ
(8)
2 BQ
(6)
2 BQ
(4)
2 BQ
3 Band
DRC
Mono
Mixer
Stereo
Mux
Stereo
Mixer
Coeff-1
Coeff-2
Master
Volume
2ch
Interpolation
Filter
1ch I2S out
PCM5121, PCM5122
www.ti.com SLAS763A –AUGUST 2012–REVISED SEPTEMBER 2012
Fixed Audio Processing Flow (Program 5)
The PCM512x family implements signal processing capabilities and interpolation filtering via processing blocks.
These fixed processing blocks give users the choice of how much and what type of signal processing they may
use and which interpolation filter is applied.
The signal processing blocks available are:
• Biquad filters
• Multiband DRC
• Mono mixer
• Stereo mixer
• Average volume control
Users can find more details in Purepath Studio.
Filter Programming Changes
The following sequence must be followed to change the ROM program.
1. Enter Stand-by mode. (Set Page 0, Register 2, D(4))
2. Change program number. (Set Page 0, Register 43, D(4:0))
3. Exit Stand-by mode. (Reset Page.0, Register 2, D(4))
Processing Blocks – Detailed Descriptions
Figure 71 shows the fixed processing flow.
Figure 71. Preset Process Flow
Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 55
Product Folder Links: PCM5121 PCM5122