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SLAS644B – JULY 2009 – REVISED OCTOBER 2009
Page 0 / Register 49: INT2 Control Register
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7
R/W
0
0: Headset-insertion detect interrupt is not used in the generation of INT2 interrupt.
1: Headset-insertion detect interrupt is used in the generation of INT2 interrupt.
D6
R/W
0
0: Button-press detect interrupt is not used in the generation of INT2 interrupt.
1: Button-press detect interrupt is used in the generation of INT2 interrupt.
D5
R/W
0
0: DAC DRC signal-power interrupt is not used in the generation of INT2 interrupt.
1: DAC DRC signal-power interrupt is used in the generation of INT2 interrupt.
D4
R/W
0
0: ADC AGC noise interrupt is not used in the generation of INT2 interrupt.
1: ADC AGC noise interrupt is used in the generation of INT2 interrupt.
D3
R/W
0
0: Short-circuit interrupt is not used in the generation of INT2 interrupt.
1: Short-circuit interrupt is used in the generation of INT2 interrupt.
D2
R/W
0
0: Engine-generated interrupt is not used in the generation of INT2 interrupt.
1: Engine-generated interrupt is used in the generation of INT2 interrupt.
D1
R/W
0
0: DC measurement using Delta Sigma Audio ADC data-available interrupt is not used in the generation
of INT2 interrupt
1: DC measurement using Delta Sigma Audio ADC data-available interrupt is used in the generation of
INT2 interrupt
D0
R/W
0
0: INT2 is only one pulse (active-high) of typical 2-ms duration.
1: INT2 is multiple pulses (active-high) of typical 2-ms duration and 4-ms period, until flag registers 44
and 45 are read by the user.
Page 0 / Register 50: Reserved
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7-D0
R/W
0000 0000
Reserved. Write only reset values.
Page 0 / Register 51: GPIO1 In/Out Pin Control
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D6
R/W
XX
Reserved. Do not write any value other than reset value.
D5–D2
R/W
0000
0000: GPIO1 disabled (input and output buffers powered down)
0001: GPIO1 is in input mode (can be used as secondary BCLK input, secondary WCLK input,
secondary DIN input, ADC_WCLK input, Dig_Mic_In or in ClockGen block).
0010: GPIO1 is used as general-purpose input (GPI).
0011: GPIO1 output = general-purpose output
0100: GPIO1 output = CLKOUT output
0101: GPIO1 output = INT1 output
0110: GPIO1 output = INT2 output
0111: GPIO1 output = ADC_WCLK output for codec interface
1000: GPIO1 output = secondary BCLK output for codec interface
1001: GPIO1 output = secondary WCLK output for codec interface
1010: GPIO1 output = ADC_MOD_CLK output for the digital microphone
1011: GPIO1 output = secondary DOUT for codec interface
1100: Reserved
1101: Reserved
1110: Reserved
1111: Reserved
D1
R
X
GPIO1 input buffer value
D0
R/W
0
0: GPIO1 general-purpose output value = 0
1: GPIO1 general-purpose output value = 1
Page 0 / Register 52: Reserved
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R/W
XX
Reserved. Do not write any value other than reset value.
Copyright 2009, Texas Instruments Incorporated
REGISTER MAP
91