CDB44800 Cirrus Logic Inc, CDB44800 Datasheet - Page 27
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CDB44800
Manufacturer Part Number
CDB44800
Description
BOARD EVAL FOR CS44800 PWM CTRL
Manufacturer
Cirrus Logic Inc
Series
Popguard®r
Specifications of CDB44800
Amplifier Type
Class D
Output Type
8-Channel
Voltage - Supply
20 V ~ 50 V
Operating Temperature
-10°C ~ 70°C
Board Type
Fully Populated
Utilized Ic / Part
CS44800
Description/function
Audio DSPs
Operating Supply Voltage
5 V
Product
Audio Modules
For Use With/related Products
CS44800
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Max Output Power X Channels @ Load
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
598-1532
CDB-44800
CDB-44800
DS632F1
4.4
4.4.1
DAI_SDIN1
DAI_SDIN2
DAI_SDIN3
DAI_SDIN4
FsIn Clock Domain Modules
Serial Data Inputs
Digital Audio Input Port
The CS44800 interfaces to an external Digital Audio Processor via the Digital Audio Input serial port, the
DAI serial port. The DAI port has
formats. The DAI port operates in slave operation only, where DAI_LRCK, DAI_SCLK and DAI_MCLK are
always inputs. The signal DAI_LRCK must be equal to the sample rate, Fs and must be synchronously
derived from the supplied master clock, DAI_MCLK. The serial bit clock, DAI_SCLK, is used to sample
the data bits and must be synchronously derived from the master clock.
DAI_SDIN1, DAI_SDIN2, DAI_SDIN3, and DAI_SDIN4 are the serial data input pins supplying the asso-
ciated internal PWM channel modulators. The serial data interface format selection (left-justified, right-jus-
tified, I²S, one line mode, or TDM) for the DAI serial port data input pins is configured using the appropriate
bits in the register
2's complement binary form with the MSB first in all formats.
When operated in One Line Data Mode, 6 channels of PWM data are input on DAI_SDIN1 and two addi-
tional PWM channels on DAI_SDIN4. In TDM mode, all
data line.
The DAI digital audio serial ports support 6 formats with varying bit depths from 16 to 24 as shown in
ure
configuration bits in the
17,
Figure
Table 2
18,
outlines the serial port channel allocations.
“Misc. Configuration (address 04h)” on page
Normal (I²S,LJ,RJ)
One Line #1 or #2
TDM
Normal (I²S,LJ,RJ)
One Line #1 or #2
TDM
Normal (I²S,LJ,RJ)
One Line #1 or #2
TDM
Normal (I²S,LJ,RJ)
One Line #1 or #2
TDM
Figure
Table 2. DAI Serial Audio Port Channel Allocations
“Misc. Configuration (address 04h)” on page
Data mode
19,
Figure
4
stereo data inputs with support for I²S, left-justified and right-justified
20,
Figure 21
PWMOUTA1(left channel)/PWMOUTB1(right channel)
PWMOUTA1/A2/A3/B1/B2/B3
PWMOUTA1/A2/A3/A4/B1/B2/B3/B4
PWMOUTA2(left channel)/PWMOUTB2(right channel)
not used
not used
PWMOUTA3(left channel)/PWMOUTB3(right channel)
not used
not used
PWMOUTA4(left channel)/PWMOUTB4(right channel)
PWMOUTA4/B4
not used
and
Figure
8
channels are multiplexed onto the DAI_SDIN1
Channel Assignments
22. These formats are selected using the
52. The serial audio data is presented in
52.
CS44800
Fig-
27