WM8953ECSSLASHRV datasheet(89/100 Pages) WOLFSON

89 / 100 page

Production Data

WM8953

PD, January 2009, Rev 4.0

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

PLL_LCK

(rr)

Read or

Reset

PLL Lock status

Read-

0 = PLL NOT locked

1 = PLL locked

Write-

1 = Reset PLL_LCK latch

7:0

GPIO_STATUS

[7:0]

(rr)

Read or

Reset

GPIO and GPI Input Pin Status

GPIO_STATUS[7] = GPI8 pin status

GPIO_STATUS[6] = GPI7 pin status

GPIO_STATUS[5] = Reserved

GPIO_STATUS[4] = GPIO5 pin status

GPIO_STATUS[3] = GPIO4 pin status

GPIO_STATUS[2] = GPIO3 pin status

GPIO_STATUS[1] = Reserved

GPIO_STATUS[0] = Reserved

R19 (13h)

15:0

1000h

Reserved - Do Not Change

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)

GPIO3_PU

GPIO3 Pull-Up Resistor Enable

0 = Pull-up disabled

1 = Pull-up enabled (Approx 150k

Ω)

R20 (14h)

GPIO3 and

GPIO4

GPIO3_PD

GPIO3 Pull-Down Resistor Enable

0 = Pull-down disabled

1 = Pull-down enabled (Approx 150k

Ω)

WM8953ECS/RV Datenblatt(PDF) 89 Page - Wolfson Microelectronics plc

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