W681308DG Datasheet, PDF (3/64 Pages) Nuvotem Talema – W681308 USB Audio Controller from Nuvoton integrates fast 8051 Microcontroller Unit (MCU)

W681308
XXXX PRODUCT DESCRIPTION
8.6.3 Watchdog Timer ................................................................................................................................................ 25
8.7 SERIAL PORT (UART)............................................................................................................................................... 28
8.8 OTP ROM .............................................................................................................................................................. 28
9. CLOCK CONTROL AND RESET ................................................................................................................................... 29
9.1 CLOCK CONTROL...................................................................................................................................................... 29
9.1.1 Overview............................................................................................................................................................ 29
9.1.2 Clock Generation ............................................................................................................................................... 29
9.1.3 Control Register................................................................................................................................................. 30
10. INTERRUPT CONTROL ............................................................................................................................................ 31
10.1 OVERVIEW ............................................................................................................................................................... 31
10.2 FUNCTIONALITY ........................................................................................................................................................ 31
10.3 INTERRUPT CONTROL REGISTERS .............................................................................................................................. 32
11. INTERFACE LOGIC................................................................................................................................................... 33
11.1 SOFTWARE KEYPAD SCANNER ................................................................................................................................... 33
11.2 GPIO S ................................................................................................................................................................... 34
11.3 LCD CONTROL......................................................................................................................................................... 35
11.4 UART I/O CONTROL................................................................................................................................................. 35
12. PCM INTERFACE , GAIN STAGE AND MIXER ........................................................................................................ 36
12.1 PCM INTERFACE ...................................................................................................................................................... 36
12.2 GAIN STAGE ............................................................................................................................................................. 36
12.3 MIXER ..................................................................................................................................................................... 37
12.4 CONNECTION CASE EXAMPLE .................................................................................................................................... 37
12.5 MIXER CASE EXAMPLES WITH REGISTER SETTING ....................................................................................................... 39
12.6 I2S REGISTER SETTING EXAMPLE .............................................................................................................................. 42
13. AUDIO CODEC INTERFACE..................................................................................................................................... 43
13.1 OVERVIEW ............................................................................................................................................................... 43
13.2 AUDIO CODEC SIGNAL PATH.................................................................................................................................... 43
13.3 MICROPHONE INTERFACE AND AUXILIARY INTERFACE ................................................................................................... 44
14. SERIAL PERIPHERAL INTERFACE.......................................................................................................................... 47
14.1 OVERVIEW ............................................................................................................................................................... 47
14.2 DATA AND SIGNAL FORMAT OF SPI............................................................................................................................ 47
14.3 FSM OF SPI ............................................................................................................................................................ 47
14.4 FIFO AND RAM OF SPI ............................................................................................................................................ 48
14.5 INTERRUPT SOURCES................................................................................................................................................ 48
15. NUVOTON 2-WIRE SERIAL BUS.............................................................................................................................. 49
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