Datasheet

TLV320AIC3107

SLOS545D –NOVEMBER 2008 –REVISED DECEMBER 2014

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Table 105. Page 0 / Register 98: GPIO1 Control Register

BIT READ/ RESET DESCRIPTION

WRITE VALUE

D7-D4 R/W 0000 GPIO1 Output Control

0000: GPIO1 is disabled

0001: GPIO1 used for audio serial data bus ADC word clock

0010: GPIO1 output = clock mux output divided by 1 (M=1)

0011: GPIO1 output = clock mux output divided by 2 (M=2)

0100: GPIO1 output = clock mux output divided by 4 (M=4)

0101: GPIO1 output = clock mux output divided by 8 (M=8)

0110: GPIO1 output = short circuit interrupt

0111: GPIO1 output = AGC noise interrupt

1000: GPIO1 = general purpose input

1001: GPIO1 = general purpose output

1010: Reserved. Do not write this sequence to these bits.

1011: GPIO1 = word clock for audio serial data bus (programmable as input or output)

1100: GPIO1 output = hook-switch/button press interrupt (interrupt polarity: active high, typical interrupt

duration: button pressed time + clock resolution. Clock resolution depends upon debounce

programmability. Typical interrupt delay from button: debounce duration + 0.5ms)

1101: GPIO1 output = jack/headset detection interrupt

1110: GPIO1 output = jack/headset detection interrupt OR button press interrupt

1111: GPIO1 output = jack/headset detection OR button press OR Short Circuit detection OR AGC

Noise detection interrupt

D3 R/W 0 GPIO1 Clock Mux Output Control

0: GPIO1 clock mux output = PLL output

1: GPIO1 clock mux output = clock divider mux output

D2 R/W 0 GPIO1 Interrupt Duration Control

0: GPIO1 Interrupt occurs as a single active-high pulse of typical duration 2ms.

1: GPIO1 Interrupt occurs as continuous pulses until the Interrupt Flags register (register 96) is read by

the host

D1 R 0 GPIO1 General Purpose Input Value

0: A logic-low level is input to GPIO1

1: A logic-high level is input to GPIO1

D0 R/W 0 GPIO1 General Purpose Output Value

0: GPIO1 outputs a logic-low level

1: GPIO1 outputs a logic-high level

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