wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 182

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

WM8400
w
R55 (37h)
Additional
Control
R56 (38h)
Anti-Pop (1)
R57 (39h)
Anti-Pop (2)
REGISTER
ADDRESS
3
2
1
0
15:1
0
15:6
5
4
3
2
1
0
15:7
6
5:4
3
2
1
BIT
LOPGASPK
ROPGASPK
LDSPK
RDSPK
VROI
DIS_LLINE
DIS_RLINE
DIS_OUT3
DIS_OUT4
DIS_LOUT
DIS_ROUT
SOFTST
BUFIOEN
BUFDCOPEN
POBCTRL
LABEL
0b
0b
0b
0b
0000h
0b
000h
0b
0b
0b
0b
0b
0b
0000_000
0_0b
0b
00b
0b
0b
0b
DEFAULT
LOPGA to SPKMIX
0 = Mute
1 = Un-mute
ROPGA to SPKMIX
0 = Mute
1 = Un-mute
Left DAC to SPKMIX
0 = Mute
1 = Un-mute
Note: LDSPK must be muted when LDLO=1
Right DAC to SPKMIX
0 = Mute
1 = Un-mute
Note: RDSPK must be muted when RDRO=1
Reserved - Do Not Change
VREF to Analogue Output Resistance (Disabled Outputs)
0 = 20kΩ (Headphone) or 10kΩ (Line Out) from buffered
VMID to output
1 = 500Ω from buffered VMID to output
Reserved - Do Not Change
Discharges LOP and LON outputs via approx 500Ω resistor
0 = Not active
1 = Actively discharging LOP and LON
Discharges ROP and RON outputs via approx 500Ω resistor
0 = Not active
1 = Actively discharging ROP and RON
Discharges OUT3 output via approx 500Ω resistor
0 = Not active
1 = Actively discharging OUT3
Discharges OUT4 output via approx 500Ω resistor
0 = Not active
1 = Actively discharging OUT4
Discharges LOUT output via approx 500Ω resistor
0 = Not active
1 = Actively discharging LOUT
Discharges ROUT output via approx 500Ω resistor
0 = Not active
1 = Actively discharging ROUT
Reserved - Do Not Change
Enables VMID soft start
0 = Disabled
1 = Enabled
Reserved - Do Not Change
Enables the VGS / R current generator and the analogue input
and output bias
0 = Disabled
1 = Enabled
Enables the VGS / R current generator
0 = Disabled
1 = Enabled
Selects the bias current source for output amplifiers and VMID
buffer
0 = VMID / R bias
1 = VGS / R bias
DESCRIPTION
PP, April 2009, Rev 3.0
Pre-Production
182