wm8953 Wolfson Microelectronics plc, wm8953 Datasheet - Page 50
wm8953
Manufacturer Part Number
wm8953
Description
Low Power Stereo Adc With Pll And Tdm Interface Low Power Stereo Adc With Pll And Tdm Interface
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8953.pdf
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WM8953
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The IRQ register (R18) is described in Table 30.
Table 30 GPIO Interrupt and Status Readback
R18 (12h)
R23 (17h)
GPIO
Control (2)
REGISTER
ADDRESS
12
11
10
9
8
7:0
12
BIT
IRQ
(ro)
TEMPOK
(rr)
MICSHRT
(rr)
MICDET
(rr)
PLL_LCK
(rr)
GPIO_STATUS
[7:0]
(rr)
IRQ_INV
(rw)
LABEL
Read Only
Read or
Reset
Read or
Reset
Read or
Reset
Read or
Reset
Read or
Reset
0b
DEFAULT
IRQ Readback
(Allows polling of IRQ status)
Temperature OK status
Read-
0 = Device temperature NOT ok
1 = Device temperature ok
Write -
1 = Reset TEMPOK latch
MICBIAS short status
Read-
0 = MICBIAS ok
1 = MICBIAS shorted
Write-
1 = Reset MICSHRT latch
MICBIAS detect status
MICBIAS microphone detect Readback
Read-
0 = No Microphone detected
1 = Microphone detected
Write-
1 = Reset MICDET latch
PLL Lock status
Read-
0 = PLL NOT locked
1 = PLL locked
Write-
1 = Reset PLL_LCK latch
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 status
GPIO_STATUS[3] = GPIO4 status
GPIO_STATUS[2] = GPIO3 status
GPIO_STATUS[1] = Reserved
GPIO_STATUS[0] = Reserved
IRQ Invert
0 = IRQ output active high
1 = IRQ output active low
DESCRIPTION
PD, January 2009, Rev 4.0
Production Data
50
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