C-Media CM6533 - Page 4

CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
Page 4 / 60 www.cmedia.com.tw
Rev.1.7 Copyright© C-Media Electronics Inc.
6.6 SPDIF Control Description ................................................................... 29
6.6.1 SPDIF Frame Description ............................................................... 29
6.6.2 SPDIF Out Channel Status .............................................................. 31
6.7 Digital Microphone ............................................................................ 32
6.8 I2C Interface ................................................................................... 33
6.8.1 I2C Master Mode ......................................................................... 33
6.8.2 I2C-Master Read with clk_sync mode ................................................. 34
6.8.3 I2C Master Device Address and Control Register .................................... 34
6.8.4 I2C Master Memory Address Pointer (MAP) Register ................................ 34
6.8.5 I2C Master Memory Address Pointer (MAP2) Register ............................... 34
6.8.6 I2C Master Data Register ............................................................... 35
6.8.7 I2C Master Control and Status Register 0 ............................................ 35
6.8.8 I2C Master Control and Status Register 1 ............................................ 35
6.8.9 I2C Master Download Control and Status Register .................................. 36
6.8.10 I2C Master Clock Period Setting Register ............................................ 37
6.8.11 I2C Slave Mode ........................................................................... 38
6.8.12 I2C Slave Data Register ................................................................. 38
6.8.13 I2C Slave Status Register ............................................................... 38
6.8.14 I2C Slave Memory Address Pointer(MAP) Register ................................... 39
6.8.15 I2C Slave Status Register ............................................................... 39
6.9 SPI Interface ................................................................................... 41
6.9.1 SPI Registers Descriptions .............................................................. 41
6.9.2 SPI Control Register 0 ................................................................... 41
6.9.3 SPI Control Register 1 ................................................................... 42
6.9.4 SPI Interrupt ............................................................................. 42
6.9.5 SPI Control Register 3 ................................................................... 43
6.10 GPIO ............................................................................................ 44
6.10.1 GPO Data Register ....................................................................... 44
6.10.2 GPI Data Register ........................................................................ 44
6.10.3 GPIO Direction Control Register ....................................................... 44
6.10.4 GPIO Interrupt Enable Mask Register ................................................. 44
6.10.5 GPIO Debouncing Register ............................................................. 44
6.10.6 GPI Remote Choose ..................................................................... 45
6.10.7 GPIO Pull-up/Down ..................................................................... 45
6.11 Arbitrary Sine-tone Generator .............................................................. 47
6.12 Tri-Colored LED Control Setting ............................................................ 48
6.13 Reset ............................................................................................ 49
6.13.1 Watchdog Reset Timer .................................................................. 49
7 CM6533X1 Xear™ Sound Processing .................................................................... 50
7.1 Xear™ Surround Headphone ................................................................. 50