参数资料
型号: CS4384-CQZR
厂商: Cirrus Logic Inc
文件页数: 13/52页
文件大小: 0K
描述: IC DAC 8CH 103DB 192KHZ 48-LQFP
标准包装: 2,000
位数: 24
数据接口: 串行
转换器数目: 8
电压电源: 模拟和数字
功率耗散(最大): 520mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP
包装: 带卷 (TR)
输出数目和类型: 8 电压,单极
采样率(每秒): 216k
配用: 598-1525-ND - BOARD EVAL FOR CS4384 DAC
20
DS620F1
CS4384
4. APPLICATIONS
The CS4384 serially accepts twos complement formatted PCM data at standard audio sample rates including 48,
44.1 and 32 kHz in SSM, 96, 88.2 and 64 kHz in DSM, and 192, 176.4 and 128 kHz in QSM. Audio data is input via
the serial data input pins (SDINx). The Left/Right Clock (LRCK) determines which channel is currently being input
on SDINx, and the Serial Clock (SCLK) clocks audio data into the input data buffer. For more information on serial
audio interfaces see AN282 “The 2-Channel Serial Audio Interface: A Tutorial”.
The CS4384 can be configured in Hardware Mode by the M0, M1, M2, M3 and M4 pins and in Software Mode
through IC or SPI.
4.1
Master Clock
MCLK/LRCK must be an integer ratio as shown in Tables 1 - 3. The LRCK frequency is equal to Fs, the
frequency at which words for each channel are input to the device. The MCLK-to-LRCK frequency ratio and
speed mode is detected automatically during the initialization sequence by counting the number of MCLK
transitions during a single LRCK period and by detecting the absolute speed of MCLK. Internal dividers are
then set to generate the proper internal clocks. Tables 1 - 3 illustrate several standard audio sample rates
and the required MCLK and LRCK frequencies. Please note there is no required phase relationship, but
MCLK, LRCK and SCLK must be synchronous.
Sample Rate
(kHz)
MCLK (MHz)
256x
384x
512x
768x
1024x
1152x
32
8.1920
12.2880
16.3840
24.5760
32.7680
36.8640
44.1
11.2896
16.9344
22.5792
33.8688
45.1584
48
12.2880
18.4320
24.5760
36.8640
49.1520
Table 1. Single-Speed Mode Standard Frequencies
Sample Rate
(kHz)
MCLK (MHz)
128x
192x
256x
384x
512x
64
8.1920
12.2880
16.3840
24.5760
32.7680
88.2
11.2896
16.9344
22.5792
33.8688
45.1584
96
12.2880
18.4320
24.5760
36.8640
49.1520
Table 2. Double-Speed Mode Standard Frequencies
Sample Rate
(kHz)
MCLK (MHz)
64x
96x
128x
192x
256x
176.4
11.2896
16.9344
22.5792
33.8688
45.1584
192
12.2880
18.4320
24.5760
36.8640
49.1520
Table 3. Quad-Speed Mode Standard Frequencies
= Denotes clock ratio and sample rate combinations which are NOT supported under auto
speed-mode detection. Please see “Switching Characteristics - PCM” on page 14.
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