
ES7210
ES7210 User Guide
2018-06-07
1 BLOCK DIAGRAM ................................................................................................................................................................................................................................................................. 5
2 Recommended Operating Condition and Power Consumption ...................................................................................................................................................................................... 5
3 Application Circuit and PCB Layout Guide ........................................................................................................................................................................................................................ 6
3.1 ES7210 Application Circuit for Analog Microphone ............................................................................................................................................................................................... 6
3.2 ES7210 Application Circuit for PDM Digital Microphone ...................................................................................................................................................................................... 6
3.3 PCB Layout Guide ................................................................................................................................................................................................................................................... 7
3.3.1 The Power supply, Grounding, Decoupling and Filters .................................................................................................................................................................................... 7
3.3.2 The Thermal Pad of ES7210............................................................................................................................................................................................................................. 8
3.4 Microphone Circuit .................................................................................................................................................................................................................................................. 8
3.5 Microphone Bias Supply .......................................................................................................................................................................................................................................... 9
3.6 Line input ................................................................................................................................................................................................................................................................. 9
3.7 The Circuit Schematic for I2S .................................................................................................................................................................................................................................. 9
3.8 The Circuit Schematic of I2C ................................................................................................................................................................................................................................... 9
4 ES7210 Application ................................................................................................................................................................................................................................................................ 10
4.1 Register Map .......................................................................................................................................................................................................................................................... 10
4.2 I2C Control Port ..................................................................................................................................................................................................................................................... 12
4.3 Soft Reset ............................................................................................................................................................................................................................................................. 12
4.4 Time Control for Powerup / Chip initialization ...................................................................................................................................................................................................... 13
4.5 Master or Slave mode ............................................................................................................................................................................................................................................. 13
4.6 Speed Mode ............................................................................................................................................................................................................................................................ 13
4.7 Internal clock diagram ............................................................................................................................................................................................................................................ 14
4.8 The Sample code for register configuration of Clock condition............................................................................................................................................................................. 17
4.9 Serial Digital Audio Format ................................................................................................................................................................................................................................... 17
4.10 Digital Path ............................................................................................................................................................................................................................................................ 18
4.10.1 MUTE and AUTO MUTE .............................................................................................................................................................................................................................. 19
4.10.2 ALC and Volume Control ............................................................................................................................................................................................................................... 20
4.10.3 Interrupt .......................................................................................................................................................................................................................................................... 21
4.11 Analog input .......................................................................................................................................................................................................................................................... 21
4.12 MICBIAS VOLTAGE ............................................................................................................................................................................................................................................ 23
4.13 Power Control ....................................................................................................................................................................................................................................................... 24
4.14 TDM Mode ............................................................................................................................................................................................................................................................. 24
4.14.1 1×FS TDM Mode Timing ............................................................................................................................................................................................................................... 25
4.14.2 N×FS TDM Mode Timing .............................................................................................................................................................................................................................. 26
4.14.3 TDM Mode With One ES7210 Device ........................................................................................................................................................................................................... 28
4.14.4 TDM Mode With Two ES7210 Devices ......................................................................................................................................................................................................... 28
4.14.5 TDM Mode With Three ES7210 Devices ....................................................................................................................................................................................................... 29
4.14.6 TDM Mode With Four ES7210 Devices ........................................................................................................................................................................................................ 30
5 Register Configuration for ES7210 ................................................................................................................................................................................................................................... 31
5.1 The Sequence – TDMIN-IIS 30DB .................................................................................................................................................................................................................... 31
5.2 The Sequence –Master ....................................................................................................................................................................................................................................... 31
5.3 The Sequence – N*TDMIN-IIS 30DB ............................................................................................................................................................................................................... 31
5.4 The Sequence – Auotmute+int .......................................................................................................................................................................................................................... 32
5.5 The sequence for Standby mode ...................................................................................................................................................................................................................... 32