Cirrus-logic CS4398 Manual do Utilizador descarregar pdf (Página 14)

14 DS568F1

CS4398

SWITCHING CHARACTERISTICS - DSD

(Logic 0 = AGND = DGND; Logic 1 = VLS Volts; C

=20pF)

Parameter Symbol Min Typ Max Unit

MCLK Duty Cycle 40 - 60 %

DSD_SCLK Pulse Width Low t

sclkl

160 - - ns

DSD_SCLK Pulse Width High t

sclkh

160 - - ns

DSD_SCLK Frequency (64x Oversampled)

(128x Oversampled)

1.024

2.048

3.2

6.4

MHz

DSD_A / _B valid to DSD_SCLK rising setup time t

sdlrs

20 - - ns

DSD_SCLK rising to DSD_A or DSD_B hold time t

sdh

20 - - ns

DSD clock to data transition (Phase Modulation mode) t

dpm

-20 - 20 ns

sclkh

sclkl

DSD_A

DSD_B

DSD_SCLK

sdlrs

sdh

Figure 6. Direct Stream Digital - Serial Audio Input Timing

dpm

DSD_A, DSD_B

DSD_SCLK

(64Fs)

DSD_SCLK

(128Fs)

dpm

Figure 7. Direct Stream Digital - Serial Audio Input Timing for Phase Modulation Mode

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 45 46

Features 1
Control Port Mode Features 2
Description 2
Stand-Alone Mode Features 2
TABLE OF CONTENTS 3
LIST OF FIGURES 4
LIST OF TABLES 5
1. PINOUT DRAWING 6
ABSOLUTE MAXIMUM RATINGS 8
ANALOG CHARACTERISTICS 9
SWITCHING CHARACTERISTICS 12
DS568F1 13 13
DSD_A, DSD_B 14
™ FORMAT 16
(Note 16) 17
(Note 19) 17
DS568F1 19 19
4. APPLICATIONS 20
4.4 Oversampling Modes 21
4.6 Stand-alone Mode Settings 22
5. CONTROL PORT INTERFACE 25
5.4.1 Writing in I²C Format 26
5.4.2 Reading in I²C Format 26
5.5 SPI Format 26
5.5.1 Writing in SPI 26
5.5.2 Reading in SPI 27
6. REGISTER QUICK REFERENCE 28
7. REGISTER DESCRIPTION 29
76543210 30
7654 3 2 1 0 38
8. PARAMETER DEFINITIONS 39
9. REFERENCES 39
10.PACKAGE DIMENSIONS 40
11.APPENDIX 41
42 DS568F1 42
DS568F1 43 43
44 DS568F1 44
Table 8. Revision Table 45
46 DS568F1 46

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