CS4353 Cirrus Logic, CS4353 Datasheet - Page 15

• Manufacturer Part Number: CS4353
• Description: 3.3 V Stereo Audio DAC
• Manufacturer: Cirrus Logic

DS803PP1
4.2
4.3
Sample Rate
Sample Rate Range/Operational Mode Detect
The CS4353 operates in one of three operational modes. The device will auto-detect the correct mode when
the input sample rate (Fs), defined by the LRCK frequency, falls within one of the ranges illustrated in
Table
LRCK frequency, a valid serial clock (SCLK) and master clock (MCLK) must also be applied to the device
for speed mode auto-detection; see
System Clocking
The device requires external generation of the master (MCLK), left/right (LRCK) and serial (SCLK) clocks.
The left/right clock, defined also as the input sample rate (Fs), must be synchronously derived from the
MCLK signal according to specified ratios. The specified ratios of MCLK to LRCK, along with several stan-
dard audio sample rates and the required MCLK frequency, are illustrated in
Refer to
to
cies.
Sample Rate
(kHz)
“Switching Specifications - Serial Audio Interface” on page 10
88.2
96
(kHz)
44.1
32
48
3. Sample rates outside the specified range for each mode are not supported. In addition to a valid
Section 4.4
Input Sample Rate (Fs)
Sample Rate
170 kHz - 216 kHz
84 kHz - 108 kHz
11.2896
12.2880
8 kHz - 54 kHz
128x
for the required SCLK timing associated with the selected Digital Interface Format and
(kHz)
176.4
11.2896
12.2880
192
8.1920
256x
Table 5. Double-Speed Mode Standard Frequencies
Table 4. Single-Speed Mode Standard Frequencies
Table 6. Quad-Speed Mode Standard Frequencies
Table 3. CS4353 Operational Mode Auto-Detect
Figure
16.9344
18.4320
192x
12.2880
16.9344
18.4320
384x
22.5792
24.5760
128x
9.
MCLK (MHz)
MCLK (MHz)
MCLK (MHz)
22.5792
24.5760
16.3840
22.5792
24.5760
256x
512x
33.8688
36.8640
192x
for the maximum allowed clock frequen-
Double-Speed Mode
Single-Speed Mode
Quad-Speed Mode
33.8688
36.8640
24.5760
33.8688
36.8640
384x
45.1584
49.1520
768x
256x
Mode
Tables
4-6.
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45.1584
49.1520
32.7680
45.1584
49.1520
1024x
512x
CS4353
15