cs4244-enzr Cirrus Logic, Inc., cs4244-enzr Datasheet - Page 31
cs4244-enzr
Manufacturer Part Number
cs4244-enzr
Description
4 In/4 Out Audio Codec With Pcm And Tdm Interfaces
Manufacturer
Cirrus Logic, Inc.
Datasheet
1.CS4244-ENZR.pdf
(66 pages)
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DS900PP2
4.6
4.6.1
AIN1 (±)
AIN2 (±)
AIN3 (±)
AIN4 (±)
Internal Signal Path
The CS4244 device includes two paths in which audio data can be routed. The analog input path, shown in
yellow, allows up to four analog signals to be combined into a single TDM stream on the SDOUT1 pin or
output as stereo pairs on the SDOUT1 and SDOUT2 pins. The DAC1-4 path, highlighted in blue, converts
serial audio data to analog audio data.
4.6.1.1
In TDM mode, the CS4244 is designed to load the first four slots of the TDM stream on the SDOUT1 pin
with the internal ADC data. Additionally, in order to minimize the number of SDOUT lines that must be run
to the system controller in a multiple IC application, the SDOUT data for up to 4 devices can be loaded
into a single TDM stream by side chaining the devices together, as shown in
sidechain feature, the
Routing the Serial Data within the Signal Paths
1.8 to 5.0 VDC
VL
Multi-bit
ADC
SDOUT1
ADC Signal Routing
Digital Filters
SDOUT2
“SDO CHAIN” bit in the "SP Control" register
Channel Volume ,
SDIN2
Mute, Invert ,
Noise Gate
Figure 19. Audio Path Routing
Serial Audio Interface
SDIN1
2.5 V
2.5 VDC
Clock / LRCK
Frame Sync
VD
Volume
Control
Master
Level Translator
LDO
Master Clock In
5.0 VDC
VA
Interpolation
Filter
Analog Supply
Serial Clock
In/ Out
must be set.
Multi-bit
Modulators
INT
Control Port
RST
DAC &
Analog
Figure
Filters
I
2
C Control
Data
20. To enable the
CS4244
AOUT1 (±)
AOUT2 (±)
AOUT3 (±)
AOUT4 (±)
31
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