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   源码介绍

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Table of Contents
1 Symbols, Marks, and Notations ..................................................................6
2 Overview.................................................................................................8
2.1 Features ............................................................................................... 9
2.1.1 DSP Functions.......................................................................................... 9
2.1.2 General Functions .................................................................................. 10
3 Block Diagram........................................................................................ 11
4 Pin Assignments ..................................................................................... 12
5 Pin Descriptions...................................................................................... 13
5.1 Pin Summary....................................................................................... 13
5.2 Device Pin States ................................................................................. 16
5.2.1 Device Pin States During and On Exiting Power-on Resets ........................... 16
5.2.2 Handling of Unused Pins.......................................................................... 18
6 Device Operations .................................................................................. 20
6.1 Host Controller Interface ....................................................................... 20
6.1.1 SPI ....................................................................................................... 21
6.1.2 I
2
C ....................................................................................................... 29
6.2 Device Startups and Power Management................................................. 30
6.2.1 LDO...................................................................................................... 30
6.2.2 Power Domains...................................................................................... 31
6.2.3 Starting Device ...................................................................................... 32
6.3 Embedded Microcontroller ..................................................................... 33
6.3.1 External Flash Memory Access ................................................................. 33
6.3.2 Selecting DSP Data With GPI Pin Strapping................................................ 34
6.3.3 Selecting GPO Pin Output ........................................................................ 34
6.3.4 I
2
C Interface.......................................................................................... 34
6.4 Digital Microphone Interface (PDM)......................................................... 35
7 Register Descriptions .............................................................................. 36
7.1 Register Overview ................................................................................ 36
7.2 Accessing Intermediate Registers ........................................................... 37
7.2.1 Burst Access Support to Intermediate Register Read/Write.......................... 37
7.2.2 Writing Intermediate Registers ................................................................ 37
7.2.3 Reading Intermediate Registers ............................................................... 37
7.3 Register Map ....................................................................................... 38
7.3.1 IF_REG (Interface of intermediate Register) .............................................. 38
7.3.2 A_REG (Clock, PLL etc) ........................................................................... 39
7.3.3 MA_REG (Digital volume Mixer etc.) ......................................................... 40
7.3.4 MB_REG (Digital audio etc.)..................................................................... 41
7.3.5 B_REG (B-DSP)...................................................................................... 42
7.3.6 C_REG (C-DSP)...................................................................................... 43
7.3.7 E_REG (E-DSP) ...................................................................................... 44
7.3.8 F_REG (F-DSP) ...................................................................................... 45
7.3.9 ANA_REG (Analog volume, Mixer, etc.) ..................................................... 46
7.3.10 CD_REG ................................................................................................ 47
7.4 IF_REG Details..................................................................................... 48
7.4.1 Intermediate Register Access................................................................... 48
7.4.2 Power Management................................................................................ 54
7.4.3 Reset.................................................................................................... 55
7.5 A_REG Details ..................................................................................... 56
7.5.1 DevID / VerID........................................................................................ 56
7.5.2 CLOCK .................................................................................................. 56
7.5.3 Digital Interface Pin Controls ................................................................... 58
7.5.4 GPIO (PA[0/1/2]) Pin Controls ................................................................. 62
7.5.5 PLL / Clock ............................................................................................ 66
7.5.6 Clock Settings ........................................................................................ 71
7.6 MA_REG Details ................................................................................... 74
YMU836
6MU836A21 5
7.6.1 Volume ................................................................................................. 74
7.6.2 SWAP ................................................................................................... 88
7.6.3 MIXER .................................................................................................. 90
7.7 E_REG Details...................................................................................... 97
7.7.1 Oversampling Filter(OSF) ........................................................................ 97
7.7.2 DC Blocking Filters ............................................................................... 100
7.7.3 PDM Interface...................................................................................... 102
7.8 ANA_REG Details ................................................................................107
7.8.1 Hardware ID........................................................................................ 107
7.8.2 Soft Reset ........................................................................................... 107
7.8.3 Power Management.............................................................................. 108
7.8.4 Mic Bias Controls.................................................................................. 114
7.8.5 Pin Function Controls ............................................................................ 115
7.8.6 VOLUME.............................................................................................. 116
7.8.7 ANALOG MIXER.................................................................................... 120
7.8.8 CHARGE PUMP..................................................................................... 121
7.9 CD_REG Details ..................................................................................122
7.9.1 Soft Reset ........................................................................................... 122
7.9.2 Power Management.............................................................................. 123
7.9.3 GPIO(GPIO[0/1/2/3]) Pin Controls.......................................................... 128
8 Electrical Characteristics ........................................................................ 133
8.1 Absolute Maximum Ratings...................................................................133
8.2 Recommended Operating Conditions......................................................134
8.3 Operating Current ...............................................................................135
8.4 DC Characteristics ...............................................................................136
8.5 AC Characteristics ...............................................................................137
8.5.1 Power-on rule, Input signal slope rule..................................................... 137
8.5.2 Input Clock (CLKI)................................................................................ 139
8.5.3 SPI Timing .......................................................................................... 140
8.5.4 I
2
C Interface Timing ............................................................................. 143
8.5.5 Digital Audio Interface Timing................................................................ 144
8.5.6 PCM Interface Timing ........................................................................... 148
8.5.7 Digital Microphone Interface Timing........................................................ 151
8.6 Analog Characteristic ...........................................................................152
8.6.1 Line Output Amplifier ............................................................................ 152
8.6.2 MIC Amplifiers #1 to #3 ....................................................................... 152
8.6.3 MIC Amplifiers #4 ................................................................................ 152
8.6.4 VREF .................................................................................................. 153
8.6.5 MIC Biases #1 to #3 ............................................................................ 153
8.6.6 ADC.................................................................................................... 153
8.6.7 DAC.................................................................................................... 153
8.6.8 LINEOUT1/LINEOUT2 Volume (LO[1/2]VOL_L/R)..................................... 153
8.6.9 MIC1/MIC2/MIC3/MIC4 Gain Settings (MC[1/2/3/4]VOL) .......................... 154
9 Package Dimensions ............................................................................. 155
10 Peripheral Circuit Example ..................................................................... 156
10.1 SPI Master Mode.................................................................................156
10.2 SPI Slave Mode...................................................................................157