Cirrus-logic CS4384 Manuel d'utilisateur télécharger pdf (Page 15)

DS620F1 15

CS4384

SWITCHING CHARACTERISTICS - DSD

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

=30pF)

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

DSDxx

DSD_SCLK

sdlrs

sdh

Figure 3. Direct Stream Digital - Serial Audio Input Timing

dpm

DSDxx

DSD_SCLK

(64Fs)

DSD_SCLK

(128Fs)

dpm

Figure 4. Direct Stream Digital - Serial Audio Input Timing for Phase Modulation Mode

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 51 52

Features 1
Description 1
TABLE OF CONTENTS 2
LIST OF FIGURES 4
LIST OF TABLES 5
1. PIN DESCRIPTION 6
DS620F1 7 7
Hardware Mode Definitions 7
Software Mode Definitions 7
DSD Definitions 7
Pin Name # Pin Description 7
ABSOLUTE MAXIMUM RATINGS 8
DAC ANALOG CHARACTERISTICS 9
DIGITAL CHARACTERISTICS 13
DS620F1 15 15
Repeated 16
18 DS620F1 18
C S 43 84 19
4. APPLICATIONS 20
4.2 Mode Select 21
MSB LSB MSB LSB 22
4.3.1 OLM #1 23
4.3.2 OLM #2 23
4.3.3 OLM #3 24
4.3.4 OLM #4 24
4.3.5 TDM 24
4.4 Oversampling Modes 25
4.5 Interpolation Filter 25
4.6 De-Emphasis 25
4.7 ATAPI Specification 26
4.9.1 Capacitor Placement 27
4.11 The MUTEC Outputs 28
4.12.1 Hardware Mode 29
4.12.2 Software Mode 29
4.14 Control Port Interface 30
4.14.1 MAP Auto Increment 30
4.14.2 I²C Mode 30
4.14.2.1 I²C Write 30
4.14.2.2 I²C Read 31
4.14.3 SPI Mode 31
4.14.3.1 SPI Write 31
76543210 32
00000000 32
5. REGISTER QUICK REFERENCE 33
34 DS620F1 34
Addr Function 7 6 5 4 3 2 1 0 34
6. REGISTER DESCRIPTION 35
6.2.5 Power Down (PDN) 36
6.3 PCM Control (Address 03h) 36
6.3.2 Functional Mode (FM) 37
6.4 DSD Control (Address 04h) 37
10111100 40
6.8.4 PCM Auto-Mute (PAMUTE) 41
6.8.5 DSD Auto-Mute (DAMUTE) 41
6.9.1 Mute (MUTE_xx) 42
Table 9. ATAPI Decode 43
7. FILTER RESPONSE PLOTS 45
Amplitude (dB) 46
8. REFERENCES 49
9. PARAMETER DEFINITIONS 49
10.PACKAGE DIMENSIONS 50
48L LQFP PACKAGE DRAWING 50
11.ORDERING INFORMATION 51
12.REVISION HISTORY 51
52 DS620F1 52

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Cirrus-logic CS4384 Manuel d'utilisateur Page 15

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