Cirrus-logic CS4382A Manuel d'utilisateur télécharger pdf (Page 15)

DS618F2 15

CS4382A

SWITCHING CHARACTERISTICS - PCM

(Inputs: Logic 0 = GND, Logic 1 = VLS, C

= 30 pF)

Notes:

14. After powering up, RST

should be held low until after the power supplies and clocks are settled.

15. See Table 1 on page 21 for suggested MCLK frequencies.

Parameters Symbol Min Max Units

RST pin Low Pulse Width (Note 14) 1-ms

MCLK Frequency 1.024 55.2 MHz

MCLK Duty Cycle (Note 15) 45 55 %

Input Sample Rate - LRCK Single-speed Mode

Double-speed Mode

Quad-speed Mode

100

108

216

kHz

LRCK Duty Cycle 45 55 %

SCLK Duty Cycle 45 55 %

SCLK High Time t

sckh

8-ns

SCLK Low Time t

sckl

8-ns

LRCK Edge to SCLK rising edge t

lcks

5-ns

SDIN Setup Time before SCLK rising edge t

3-ns

SDIN Hold Time after SCLK rising edge t

5-ns

SDINx

SCLK

LRCK

MSB

sckh

sckl

lcks

MSB-1

Figure 1. Serial Audio Interface Timing

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 49 50

Features 1
Description 1
TABLE OF CONTENTS 2
LIST OF FIGURES 4
LIST OF TABLES 5
1. PIN DESCRIPTION 6
DS618F2 7 7
Pin Name # Pin Description 7
ABSOLUTE MAXIMUM RATINGS 8
DIGITAL CHARACTERISTICS 14
=20pF) 16
, of SCL 17
18 DS618F2 18
Parameter Symbol Min Max Unit 18
DS618F2 19 19
20 DS618F2 20
4. APPLICATIONS 21
23
4.4 Oversampling Modes 24
4.5 Interpolation Filter 24
4.6 De-emphasis 24
4.7 ATAPI Specification 25
4.9.1 Capacitor Placement 26
4.11 Mute Control 27
4.12.1 Hardware Mode 28
4.12.2 Software Mode 28
4.14 Control Port Interface 29
4.14.1 MAP Auto Increment 29
4.14.2 I²C Mode 29
4.14.2.1 I²C Write 29
4.14.2.2 I²C Read 30
4.14.3 SPI Mode 30
4.14.3.1 SPI Write 30
DS618F2 31 31
5. REGISTER QUICK REFERENCE 32
6. REGISTER DESCRIPTION 33
6.1.5 Power Down (PDN) 34
DS618F2 35 35
DIF2 DIF1 DIFO DESCRIPTION 35
6.3.5 Auto-Mute (AMUTE) 36
DS618F2 37 37
Default = 0 37
38 DS618F2 38
Function: 39
6.6.3 Functional Mode (FM) 40
6.7.1 Mute (MUTE) 40
6.7.2 Volume Control (XX_VOL) 41
7. FILTER PLOTS 42
DS618F2 43 43
Amplitude (dB) 44
8. PARAMETER DEFINITIONS 46
9. PACKAGE DIMENSIONS 47
48L LQFP PACKAGE DRAWING 47
10.ORDERING INFORMATION 48
11.REFERENCES 48
12.REVISION HISTORY 49

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Cirrus-logic CS4382A Manuel d'utilisateur Page 15

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