WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 133
![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
Right DAC
Digital Volume
R13 (0Dh)
R14 (0Eh)
R15 (0Fh)
R16 (10h)
R17 (11h)
R18 (12h)
GPIO Control
(1)
R19 (13h)
GPIO1
REGISTER
ADDRESS
8
7:0
15:0
15:0
15:0
15:0
15:0
15:13
12
11
10
9
8
7:0
15:8
7
BIT
DAC_VU
DACR_VOL
[7:0]
IRQ
(ro)
TEMPOK
(rr)
MICSHRT
(rr)
MICDET
(rr)
PLL_LCK
(rr)
GPIO_STATUS
[7:0]
(rr)
GPIO1_DEB_ENA
LABEL
N/A
1100_
0000b
(0dB)
0000h
0100h
0C00h
0C00h
0000h
0dB
Read Only
Read or
Reset
Read or
Reset
Read or
Reset
Read or
Reset
Read or
Reset
10h
0b
DEFAULT
DAC Volume Update
Writing a 1 to this bit will cause left and right DAC volume to
be updated simultaneously
Right DAC Digital Volume
(See Table 18 for volume settings)
Reserved - Do Not Change
Reserved - Do Not Change
Reserved - Do Not Change
Reserved - Do Not Change
Reserved - Do Not Change
Reserved - Do Not Change
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 pin status
GPIO_STATUS[3] = GPIO4 pin status
GPIO_STATUS[2] = GPIO3 pin status
GPIO_STATUS[1] = Reserved
GPIO_STATUS[0] = GPIO1 pin status
Reserved - Do Not Change
GPIO1 Input De-Bounce
0 = disabled (Not de-bounced)
1 = enabled (Requires MCLK input and TOCLK_ENA=1)
DESCRIPTION
PP, May 2008, Rev 3.1
WM8959
133
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