wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 169

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

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Pre-Production
R19 (13h)
GPIO1 and
GPIO2
REGISTER
ADDRESS
15
14
13
12
11:8
7
6
5
4
3:0
BIT
GPIO2_DEB_ENA
GPIO2_IRQ_ENA
GPIO2_PU
GPIO2_PD
GPIO2_SEL
[3:0]
GPIO1_DEB_ENA
GPIO1_IRQ_ENA
GPIO1_PU
GPIO1_PD
GPIO1_SEL
[3:0]
LABEL
0b
0b
0b
1b
0000b
0b
0b
0b
0b
0000b
DEFAULT
GPIO2 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
GPIO2 IRQ Enable
0 = disabled
1 = enabled (GPIO2 input will generate IRQ)
GPIO2 Pull-Up Resistor Enable
0 = Pull-up disabled
1 = Pull-up enabled (Approx 150kΩ)
GPIO2 Pull-Down Resistor Enable
0 = Pull-down disabled
1 = Pull-down enabled (Approx 150kΩ)
GPIO2 Function Select
0000 = Input pin
0001 = Clock output (f=SYSCLK/OPCLKDIV)
0010 = Logic '0'
0011 = Logic '1'
0100 = FLL Lock output
0101 = Temperature OK output
0110 = Reserved
0111 = CODEC IRQ output
1000 = MIC Detect
1001 = MIC Short Circuit Detect
1010 = MIC Detect
1011 = MIC Short Circuit Detect
1100 to 1111 = Reserved
GPIO1 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
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 = FLL Lock output
0101 = Temperature OK output
0110 = Reserved
0111 = CODEC IRQ output
1000 = MIC Detect
1001 = MIC Short Circuit Detect
1010 = MIC Detect
1011 = MIC Short Circuit Detect
1100 to 1111 = Reserved
DESCRIPTION
PP, April 2009, Rev 3.0
WM8400
169