WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 135
![no-image](/images/no-image-200.jpg)
WM8959
Manufacturer Part Number
WM8959
Description
Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8959.pdf
(155 pages)
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Pre-Production
R21 (15h)
GPIO5
R22 (16h)
GPI7 and
GPI8
REGISTER
ADDRESS
4
3:0
15:8
7
6
5
4
3:0
15
14
13:12
11
BIT
GPIO3_PD
GPIO3_SEL
[3:0]
GPIO5_DEB_ENA
GPIO5_IRQ_ENA
GPIO5_PU
GPIO5_PD
GPIO5_SEL
[3:0]
RD_3W_ENA
MODE_3W4W
TEMPOK_IRQ_ENA
LABEL
1b
0000b
10h
0b
0b
0b
1b
0000b
1b
0b
00b
0b
DEFAULT
GPIO3 Pull-Down Resistor Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 150kΩ)
GPIO3 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
Reserved - Do Not Change
GPIO5 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
GPIO5 IRQ Enable
0 = disabled
1 = enabled (GPIO5 input will generate IRQ)
GPIO5 Pull-Up Resistor Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 150kΩ)
GPIO5 Pull-Down Resistor Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 150kΩ)
GPIO5 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
3- / 4-wire readback configuration
1 = 3-wire mode
0 = 4-wire mode, using GPIO pin
3-wire mode
4-wire mode
Reserved - Do Not Change
Temperature Sensor IRQ Enable
0 = disabled
1 = enabled
0 = push 0/1
1 = open-drain
0 = push 0/1
1 = wired-OR
DESCRIPTION
PP, May 2008, Rev 3.1
WM8959
135
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