WM8959 Datasheet, PDF (134/155 Pages) Wolfson Microelectronics plc – Mobile Multimedia DAC with Dual-Mode Class AB/D Speaker Driver

WM8959
REGISTER
ADDRESS
BIT
6
LABEL
GPIO1_IRQ_ENA
5
GPIO1_PU
4
GPIO1_PD
3:0
GPIO1_SEL
[3:0]
R20 (14h)
15
GPIO3 and
GPIO4
14
GPIO4_DEB_ENA
GPIO4_IRQ_ENA
13
GPIO4_PU
12
GPIO4_PD
11:8 GPIO4_SEL
[3:0]
7
GPIO3_DEB_ENA
6
GPIO3_IRQ_ENA
5
GPIO3_PU
w
DEFAULT
DESCRIPTION
Pre-Production
0b
0b
0b
0000b
0b
0b
0b
1b
0000b
0b
0b
0b
GPIO1 IRQ Enable
0 = disabled
1 = enabled (GPIO1 input will generate IRQ)
GPIO1 Pull-Up Resistor Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 150kΩ)
GPIO1 Pull-Down Resistor Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 150kΩ)
GPIO1 Function Select
0000 = Input pin
0001 = Clock output (f=SYSCLK/OPCLKDIV)
0010 = Logic '0'
0011 = Logic '1'
0100 = PLL Lock output
0101 = Temperature OK output
0110 = SDOUT data output
0111 = IRQ output
1000 = MIC Detect
1001 = MIC Short Circuit Detect
1010 to 1111 = Reserved
GPIO4 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
GPIO4 IRQ Enable
0 = disabled
1 = enabled (GPIO4 input will generate IRQ)
GPIO4 Pull-Up Resistor Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 150kΩ)
GPIO4 Pull-Down Resistor Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 150kΩ)
GPIO4 Function Select
0000 = Input pin
0001 = Clock output (f=SYSCLK/OPCLKDIV)
0010 = Logic '0'
0011 = Logic '1'
0100 = PLL Lock output
0101 = Temperature OK output
0110 = SDOUT data output
0111 = IRQ output
1000 = MIC Detect
1001 = MIC Short Circuit Detect
1010 to 1111 = Reserved
GPIO3 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
GPIO3 IRQ Enable
0 = disabled
1 = enabled (GPIO3 input will generate IRQ)
GPIO3 Pull-Up Resistor Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 150kΩ)
PP, May 2008, Rev 3.1
134