WM8959 datasheet(134/155 Pages) WOLFSON

134 / 155 page

WM8959

Pre-Production

PP, May 2008, Rev 3.1

134

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

GPIO1_IRQ_ENA

GPIO1 IRQ Enable

0 = disabled

1 = enabled (GPIO1 input will generate IRQ)

GPIO1_PU

GPIO1 Pull-Up Resistor Enable

0 = Pull-up disabled

1 = Pull-up enabled (Approx 150k

Ω)

GPIO1_PD

GPIO1 Pull-Down Resistor Enable

0 = Pull-down disabled

1 = Pull-down enabled (Approx 150k

Ω)

3:0

GPIO1_SEL

[3:0]

0000b

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_DEB_ENA

GPIO4 Input De-Bounce

0 = disabled (Not de-bounced)

1 = enabled (Requires MCLK input and TOCLK_ENA=1)

GPIO4_IRQ_ENA

GPIO4 IRQ Enable

0 = disabled

1 = enabled (GPIO4 input will generate IRQ)

GPIO4_PU

GPIO4 Pull-Up Resistor Enable

0 = Pull-up disabled

1 = Pull-up enabled (Approx 150k

Ω)

GPIO4_PD

GPIO4 Pull-Down Resistor Enable

0 = Pull-down disabled

1 = Pull-down enabled (Approx 150k

Ω)

11:8

GPIO4_SEL

[3:0]

0000b

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_DEB_ENA

GPIO3 Input De-Bounce

0 = disabled (Not de-bounced)

1 = enabled (Requires MCLK input and TOCLK_ENA=1)

GPIO3_IRQ_ENA

GPIO3 IRQ Enable

0 = disabled

1 = enabled (GPIO3 input will generate IRQ)

R20 (14h)

GPIO3 and

GPIO4

GPIO3_PU

GPIO3 Pull-Up Resistor Enable

0 = Pull-up disabled

1 = Pull-up enabled (Approx 150k

Ω)

WM8959 Datasheet(PDF) 134 Page - Wolfson Microelectronics plc

WM8959 Datasheet(HTML) 134 Page - Wolfson Microelectronics plc

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